CN117997447A

CN117997447A - Radio station non-contact detection method, system, electronic equipment and storage medium

Info

Publication number: CN117997447A
Application number: CN202410140681.5A
Authority: CN
Inventors: 左剑; 周顺; 杨海涛; 俞石云; 刘斌; 施伟; 于龙; 胡永扬
Original assignee: National University of Defense Technology
Current assignee: National University of Defense Technology
Priority date: 2024-02-01
Filing date: 2024-02-01
Publication date: 2024-05-07

Abstract

The application discloses a non-contact detection method, a non-contact detection system, electronic equipment and a storage medium for a radio station, and belongs to the technical field of radio technologies. The radio station is a portable radio station configured with whip or upright antennas, the method comprising: if a transmitter function test instruction is received, a wireless transmission line is utilized to couple a radio station to obtain a coupling sampling signal; reading a power calibration coefficient according to the model of the radio station and the working antenna parameters, determining a frequency response calibration coefficient and a linear calibration coefficient, and setting the power calibration coefficient, the frequency response calibration coefficient and the linear calibration coefficient as a current calibration coefficient combination; processing the coupled sampling signal based on the current calibration coefficient combination to obtain a target parameter value; wherein the target parameter values include power, frequency, and frequency hopping rate; and judging whether the radio station is abnormal or not according to the target parameter value. The application can realize non-contact detection of the radio station and improve the accuracy and convenience of function detection.

Description

Radio station non-contact detection method, system, electronic equipment and storage medium

Technical Field

The present application relates to the field of radio technologies, and in particular, to a method, a system, an electronic device, and a storage medium for non-contact detection of a radio station.

Background

The portable short-wave radio station or the ultra-short-wave radio station is used as emergency radio communication equipment with wide application, and has important roles in daily life, emergency or emergency and severe environments. In daily maintenance and inspection, it is very important to quickly determine whether the function of the radio station is good, and in related technologies, a wired connection mode is generally used to detect the function of the radio station, so that the process is complicated and cannot adapt to the working scenario of the radio station.

Therefore, how to realize non-contact detection on a radio station and improve the accuracy and convenience of function detection are technical problems that a person skilled in the art needs to solve at present.

Disclosure of Invention

The application aims to provide a non-contact detection method, a non-contact detection system, electronic equipment and a storage medium for a radio station, which can realize non-contact detection of the radio station and improve the function detection precision and convenience.

In order to solve the above technical problems, the present application provides a radio station non-contact detection method, which is applied to a radio station detection device provided with a radio transmission line, wherein the radio transmission line comprises an antenna and/or an induction line, and the radio station non-contact detection method comprises:

If a transmitter function test instruction is received, the wireless transmission line is utilized to couple the radio station, and a coupling sampling signal is obtained;

Reading corresponding power calibration coefficients according to the model of the radio station and working antenna parameters, determining frequency response calibration coefficients and linear calibration coefficients of the radio station detection equipment, and setting the power calibration coefficients, the frequency response calibration coefficients and the linear calibration coefficients as current calibration coefficient combinations;

Processing the coupling sampling signal based on the current calibration coefficient combination to obtain a target parameter value; wherein the target parameter values include power, frequency, and frequency hopping rate;

and judging whether the function of a transmitter of the radio station is abnormal according to the target parameter value.

Optionally, the method further comprises:

if a receiver function test instruction is received, sending an audio modulation signal to the radio station through the wireless transmission line;

judging whether the radio station outputs demodulation sound corresponding to the audio modulation signal or not;

if yes, judging that the receiver of the radio station is normal in function;

if not, the receiver of the radio station is judged to be abnormal.

Optionally, before transmitting the audio modulation signal to the radio station through the wireless transmission line, the method further comprises:

and setting the working frequency of the radio station detection equipment so that the working frequency of the radio station detection equipment is consistent with the working frequency of the radio station.

Optionally, before the corresponding power calibration coefficient is read according to the model of the radio station and the working antenna parameters, the method further comprises:

Receiving a first power calibration instruction, detecting a test signal output by the radio station at a fixed position to obtain a first power detection value, and calculating an average power calibration coefficient according to the difference value between the first power detection value and a power standard value;

And storing the corresponding relation between the model of the radio station and the working antenna parameters and the average power calibration coefficient.

Receiving a second power calibration instruction, detecting test signals output by the radio station at a plurality of preset positions to obtain a second power detection value, and calculating a multi-azimuth power calibration coefficient according to average difference values of all the second power detection values and the power standard value; wherein the distance between each preset position and the radio station is the same;

and storing the corresponding relation between the model of the radio station and the working antenna parameters and the multidirectional power calibration coefficient.

Optionally, before determining the frequency response calibration coefficient and the linear calibration coefficient of the station detection device, the method further includes:

Performing frequency characteristic calibration on a radio frequency front-end channel of the radio frequency detection equipment and a power detector to obtain the frequency response calibration coefficient;

and controlling the radio station detection equipment to perform linear calibration at a preset frequency point to obtain the linear calibration coefficient.

Optionally, processing the coupled sampled signal based on the current calibration coefficient combination to obtain a target parameter value includes:

Decomposing the coupling sampling signal to obtain power information, frequency information and frequency hopping rate information;

Sequentially performing signal scaling operation, detection operation and sampling operation on the power information in the coupling sampling signal to obtain intermediate information, and performing data calibration on power parameters in the intermediate signal by using the current calibration coefficient combination to obtain a power equivalent parameter value; wherein the scaling operation includes an attenuation operation or an amplification operation;

Performing signal scaling operation, signal shaping operation and counting operation on the frequency information and the frequency hopping rate information in the coupling sampling signal to obtain a frequency measurement value and a frequency hopping rate measurement value;

Setting the power equivalent parameter value, the frequency measurement value, and the frequency hopping rate measurement value to the target parameter value.

The application also provides a radio station non-contact detection system which is applied to radio station detection equipment provided with a wireless transmission line, wherein the wireless transmission line comprises an antenna and/or an induction line, and the radio station non-contact detection system comprises:

the coupling sampling module is used for coupling the radio station by utilizing the wireless transmission line if a transmitter function test instruction is received, so as to obtain a coupling sampling signal;

The calibration coefficient reading module is used for reading corresponding power calibration coefficients according to the model of the radio station and working antenna parameters, determining frequency response calibration coefficients and linear calibration coefficients of the station detection equipment, and setting the power calibration coefficients, the frequency response calibration coefficients and the linear calibration coefficients as current calibration coefficient combinations;

The signal calibration module is used for processing the coupling sampling signal based on the current calibration coefficient combination to obtain a target parameter value; wherein the target parameter values include power, frequency, and frequency hopping rate;

and the function judging module is used for judging whether the function of the transmitter of the radio station is abnormal according to the target parameter value.

The application also provides a storage medium on which a computer program is stored, which when executed implements the steps of the radio station non-contact detection method described above.

The application also provides an electronic device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps executed by the radio station non-contact detection method when calling the computer program in the memory.

The application provides a radio station non-contact detection method, which is applied to radio station detection equipment provided with a wireless transmission line, wherein the wireless transmission line comprises an antenna and/or an induction line, and the radio station non-contact detection method comprises the following steps: if a transmitter function test instruction is received, the wireless transmission line is utilized to couple the radio station, and a coupling sampling signal is obtained; reading corresponding power calibration coefficients according to the model of the radio station and working antenna parameters, determining frequency response calibration coefficients and linear calibration coefficients of the radio station detection equipment, and setting the power calibration coefficients, the frequency response calibration coefficients and the linear calibration coefficients as current calibration coefficient combinations; processing the coupling sampling signal based on the current calibration coefficient combination to obtain a target parameter value; wherein the target parameter values include power, frequency, and frequency hopping rate; and judging whether the function of a transmitter of the radio station is abnormal according to the target parameter value.

The application uses the radio station detection equipment provided with the wireless transmission line to carry out function detection on the radio station, and after receiving the function test instruction of the transmitter, the radio station can be coupled by the wireless transmission line to obtain a coupled sampling signal. The application reads the corresponding power calibration coefficient according to the model of the radio station and the working antenna parameter, and processes the coupling sampling signal by utilizing the current calibration coefficient combination to obtain a target parameter value, and then detects the transmitter function of the radio station according to the target parameter value. The application processes the coupling sampling signal through the calibration coefficient combination, and can eliminate the influence of radio stations with different models and parameters on the detection result. Therefore, the application can realize non-contact detection of the radio station and improve the accuracy and convenience of function detection. The application also provides a radio station non-contact detection system, a storage medium and an electronic device, which have the beneficial effects and are not repeated here.

Drawings

For a clearer description of embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a flowchart of a method for detecting a radio station in a non-contact manner according to an embodiment of the present application;

fig. 2 is a schematic diagram of a near field characteristic of a stand antenna of a first radio station and a non-contact detection device according to an embodiment of the present application;

Fig. 3 is a schematic diagram of near field characteristics of a stand antenna of a first radio station and a non-contact detection device according to an embodiment of the present application;

Fig. 4 is a schematic view of directivity of a vertical section of a dipole antenna according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a dipole antenna according to an embodiment of the present application;

fig. 6 is a schematic diagram of directivity of a vertical section of a monopole antenna according to an embodiment of the present application;

fig. 7 is a schematic diagram of a monopole antenna according to an embodiment of the present application;

Fig. 8 is a schematic diagram of interfacing for function detection of a transmitter according to an embodiment of the present application;

Fig. 9 is a schematic diagram of an interface connection for receiver function detection according to an embodiment of the present application;

Fig. 10 is a schematic block diagram of non-contact detection of a transmitter function according to an embodiment of the present application;

Fig. 11 is a flow chart of non-contact detection of a transmitter function according to an embodiment of the present application;

Fig. 12 is a schematic block diagram of non-contact detection of a receiver function according to an embodiment of the present application;

Fig. 13 is a flowchart of non-contact detection of a receiver function according to an embodiment of the present application;

Fig. 14 is a schematic diagram of an internal structure of a near-field non-contact radio station detection device for a handheld radio station according to an embodiment of the present application;

fig. 15 is a schematic block diagram of a near-field non-contact radio station detection device for a handheld radio station according to an embodiment of the present application;

fig. 16 is a schematic block diagram of a near-field non-contact detection device with spectrum analysis function for a handheld radio station according to an embodiment of the present application;

fig. 17 is a schematic diagram of a calibration flow of a station non-contact detection device according to an embodiment of the present application;

Fig. 18 is a schematic diagram of a near field calibration environment requirement of a station non-contact detection device according to an embodiment of the present application;

Fig. 19 is a schematic diagram of far-field calibration environment requirements of a non-contact detection device of a radio station according to an embodiment of the present application;

Fig. 20 is a schematic diagram of a calibration through detection connection of output power of an antenna port of a radio station according to an embodiment of the present application;

fig. 21 is a schematic diagram of near-field original detection data connection of a radio station non-contact detection device according to an embodiment of the present application;

Fig. 22 is a schematic diagram of near-field calibration configuration and connection of a station non-contact detection device according to an embodiment of the present application;

Fig. 23 is a schematic diagram of near-field inductive line calibration configuration and connection of a radio non-contact detection device according to an embodiment of the present application;

Fig. 24 is a schematic diagram of far-field calibration configuration and connection of a station non-contact detection device according to an embodiment of the present application;

Fig. 25 is a flowchart of a non-contact detection operation of a radio station sender according to an embodiment of the present application;

Fig. 26 is a flowchart of a non-contact detection operation of a radio receiver according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1, fig. 1 is a flowchart of a method for detecting a radio station in a non-contact manner according to an embodiment of the application.

The specific steps may include:

S101: if a transmitter function test instruction is received, the wireless transmission line is utilized to couple the radio station, and a coupling sampling signal is obtained;

The present embodiment may be applied to a station detection apparatus provided with a wireless transmission line including an antenna and/or an induction line. The radio station detection device is used for detecting the functions of the radio station, specifically, the working states of the radio station comprise a transmitter state and a receiver state, and the transmitter function test instruction is used for judging whether the signal transmission function of the radio station in the transmitter state is normal or not. The radio station is a portable radio station equipped with whip or upright antennas.

When a transmitter function test instruction is received, the instruction triggers a radio station non-contact detection flow. Specifically, the station detection device couples the radio stations using a wireless transmission line. The purpose of the coupling is to extract the radio station signal to form a coupled sampled signal. Key information about the radio station performance, such as power, frequency, and frequency hopping rate, etc., can be obtained in the manner described above.

S102: reading corresponding power calibration coefficients according to the model of the radio station and working antenna parameters, determining frequency response calibration coefficients and linear calibration coefficients of the radio station detection equipment, and setting the power calibration coefficients, the frequency response calibration coefficients and the linear calibration coefficients as current calibration coefficient combinations;

In order to improve the detection accuracy of the coupling sampling signal, the corresponding calibration coefficient can be read to calibrate the coupling sampling signal. Because the calibration coefficients corresponding to different equipment models and working antenna parameters are different, the power calibration method and the power calibration device can read the corresponding power calibration coefficients according to the model of the radio station and the working antenna parameters. The working antenna parameters include the style and length of the working antenna, and the different coupling coefficients of the style and length of the working antenna are also different, for example, if the standing antennas with different styles and lengths are used, the signal radiation distribution in the near field is different, and the calibration must be performed separately. The power calibration coefficients comprise a near field average calibration coefficient, a near field azimuth calibration coefficient, a far field radiation power average calibration coefficient and a far field azimuth radiation power calibration coefficient.

The present embodiment may further determine a frequency response calibration coefficient and a linear calibration coefficient of the station detection apparatus, and set the power calibration coefficient, the frequency response calibration coefficient, and the linear calibration coefficient as a current calibration coefficient combination so as to perform a calibration operation based on the current calibration coefficient combination.

Different radio station models and antenna parameters may affect the transmission and reception of signals, and therefore specific calibration coefficients need to be used to ensure accuracy, and the corresponding power calibration coefficients may be retrieved from a memory or database in this step. In addition to the power calibration coefficients, this step also requires determining the frequency response calibration coefficients and the linear calibration coefficients of the station detection device, which affect the signal processing capabilities of the device. The step combines the retrieved power calibration coefficients, frequency response calibration coefficients, and linear calibration coefficients to form a current calibration coefficient combination for subsequent signal processing and analysis.

S103: processing the coupling sampling signal based on the current calibration coefficient combination to obtain a target parameter value;

on the basis of obtaining the coupling sampling signal and the current calibration coefficient combination, the method can utilize the calibration coefficient combination to carry out standardization and normalization processing on the extracted parameters, eliminate the influence of different radio station models and antenna parameters on the measurement result, and ensure the accuracy and comparability of the measurement result. The target parameter values obtained after processing the coupled sampled signals using the current calibration coefficient combination include power, frequency, and frequency hopping rate.

S104: and judging whether the function of a transmitter of the radio station is abnormal according to the target parameter value.

The embodiment can set a corresponding standard parameter value range for the radio station, compare the target parameter value with the standard parameter value range, and further judge whether the transmitter function of the radio station is abnormal according to the comparison result. For example, if the standard parameter value of each item is within the corresponding standard parameter value range, determining that the transmitter function of the radio station is not abnormal; otherwise, it is determined that there is an abnormality in the transmitter function of the radio station. By the method, abnormal conditions of the function of the transmitter of the radio station can be effectively detected, a basis is provided for timely finding and solving faults, and normal operation and performance of the radio station are further ensured.

In this embodiment, the radio station detection device provided with the wireless transmission line is used to perform function detection on the radio station, and after receiving the function test instruction of the transmitter, the wireless transmission line can be used to couple the radio station to obtain the coupling sampling signal. According to the embodiment, corresponding power calibration coefficients are read according to the model of the radio station and working antenna parameters, the current calibration coefficient combination is utilized to process the coupling sampling signals to obtain target parameter values, and then the transmitter function of the radio station is detected according to the target parameter values. According to the embodiment, the coupled sampling signals are processed through the calibration coefficient combination, so that the influence of radio stations with different models and parameters on detection results can be eliminated. Therefore, the embodiment can realize non-contact detection of the radio station, and improve the function detection precision and convenience.

As a further introduction to the corresponding embodiment of fig. 1, the receiver function of a radio station may also be detected by: if a receiver function test instruction is received, sending an audio modulation signal to the radio station through the wireless transmission line; judging whether the radio station outputs demodulation sound corresponding to the audio modulation signal or not; if yes, judging that the receiver of the radio station is normal in function; if not, the receiver of the radio station is judged to be abnormal.

As a possible implementation, before the audio modulation signal is sent to the radio station through the wireless transmission line, the operating frequency of the station detection device may also be set so that the operating frequency of the station detection device coincides with the operating frequency of the radio station.

As a further introduction to the corresponding embodiment of fig. 1, before the corresponding power calibration coefficient is read according to the model of the radio station and the working antenna parameters, a first power calibration command may also be received, a test signal output by the radio station is detected at a single fixed location to obtain a first power detection value, and an average power calibration coefficient is calculated according to a difference between the first power detection value and a power standard value; and storing the corresponding relation between the model of the radio station and the working antenna parameters and the average power calibration coefficient. The average power calibration coefficient is a power calibration coefficient of the station detection equipment at a fixed position.

As a further introduction to the corresponding embodiment of fig. 1, before the corresponding power calibration coefficient is read according to the model of the radio station and the working antenna parameters, a second power calibration command may also be received, the test signals output by the radio station are detected at a plurality of preset positions to obtain a second power detection value, and a multi-azimuth power calibration coefficient is calculated according to all the second power detection values and the average difference value of the power standard values; wherein the distance between each preset position and the radio station is the same; and storing the corresponding relation between the model of the radio station and the working antenna parameters and the multidirectional power calibration coefficient. The multi-azimuth power calibration coefficient is an average value of power calibration coefficients of a plurality of preset positions of the radio station detection equipment.

As a possible implementation manner, before determining the frequency response calibration coefficient and the linear calibration coefficient of the radio station detection device, the radio frequency pre-channel of the radio station detection device and the power detector may be subjected to frequency characteristic calibration to obtain the frequency response calibration coefficient; and the radio station detection equipment can be controlled to perform linear calibration at a preset frequency point to obtain the linear calibration coefficient.

As a possible implementation, the coupled sampled signal may be processed by: decomposing the coupling sampling signal to obtain power information, frequency information and frequency hopping rate information; sequentially performing signal scaling operation, detection operation and sampling operation on the power information in the coupling sampling signal to obtain intermediate information, and performing data calibration on power parameters in the intermediate signal by using the current calibration coefficient combination to obtain a power equivalent parameter value; wherein the scaling operation includes an attenuation operation or an amplification operation; performing signal scaling operation, signal shaping operation and counting operation on the frequency information and the frequency hopping rate information in the coupling sampling signal to obtain a frequency measurement value and a frequency hopping rate measurement value; setting the power equivalent parameter value, the frequency measurement value, and the frequency hopping rate measurement value to the target parameter value.

The flow described in the above embodiment is explained below by way of an embodiment in practical application.

The embodiment provides a scheme for carrying out rapid non-contact detection on conventional indexes and functions of a transmitter and a receiver of a portable short-wave or ultra-short-wave radio station provided with a whip antenna under a near-field environment and a near-field condition.

The radio station detection equipment provided by the embodiment can implement non-contact detection on the receiver and the transmitter of the short-wave or ultrashort-wave radio station in a near-field environment and under the conditions, and the detection process is quick and simple, can adapt to the actual environment and also meets the use requirements of the field environment. The embodiment describes the working principle, the radio near-field non-contact detection equipment, the radio near-field non-contact detection calibration method and the using operation multi-aspect content related to the radio near-field non-contact detection method. In this embodiment, the radio station is a portable short-wave or ultra-short-wave radio station with whip antenna.

The basic working principle of the radio station detection device for near-field non-contact detection of a radio station is as follows: the near-field non-contact detection method of the radio station is based on an electromagnetic induction principle and electromagnetic field theoretical analysis of a dipole antenna, and is implemented to carry out short-distance detection on main working parameters of the radio station by coupling signals through a detection antenna in a non-physical connection mode under the condition of not changing working connection of the radio station, wherein the method comprises the step of implementing non-contact detection on a transmitter and a receiver of the radio station in a near-field environment.

The non-contact detection method of the radio station detection equipment to the radio station comprises signal coupling, signal detection and signal detection calibration technology.

A) Signal coupling technology: the receiver function of the radio station is detected by utilizing the characteristic that electromagnetic radiation exists in the near field of an antenna according to the electromagnetic induction principle, and adopting a vertical antenna or an induction line similar to the characteristic of a conventional working antenna of the radio station to perform coupling sampling or radiation output modulated wave detection signal on the output power signal of the radio station at a specified detection radius R (near field distance L or far field distance D);

b) The signal detection technology comprises the following steps: processing the coupling sampling signal of the vertical antenna in a broadband or frequency-selecting mode to finish detection of the output power, frequency or frequency hopping rate of the radio station; or generating a modulated wave detection signal, radiating through the vertical antenna, to realize the function detection of the radio station receiver;

c) Detection and calibration technology: and calibrating the coupling sampling signal of the vertical antenna by an equivalent method to ensure that the detection power detection value of the detection equipment is the equivalent output power value or the equivalent radiation output power value of the transmitter of the radio station.

Referring to fig. 2 and fig. 3, fig. 2 is a schematic diagram of near field characteristics of a first radio station and a vertical antenna of a non-contact detection device according to an embodiment of the present application, and fig. 3 is a schematic diagram of near field characteristics of a vertical antenna of a first radio station and a non-contact detection device according to an embodiment of the present application.

The non-contact detection technology is based on an electromagnetic induction principle and an electromagnetic field theory of a dipole antenna, and achieves the evaluation of the integrity of the basic working state of the radio station by non-contact detection of main fixed frequency working parameters and frequency hopping working parameters of the radio station, wherein the characteristics of the vertical antennas of the radio station and non-contact detection equipment are shown in figures 2 and 3. Fig. 2 depicts the distribution of dipole antenna fields, the length of the dipole antenna being 2l, different distances d corresponding to different field regions,Corresponding reactive near field region (radian sphere)/>Corresponding to the radiation near field region (fresnel region),/>Lambda represents the wavelength of electromagnetic waves corresponding to far field regions (fraunhofer regions) of radiation. Fig. 3 depicts a dipole antenna reactive near field radiance sphere, with poles, dipole antenna, stored energy, radiation direction, radiance sphere boundary, energy flow of near field reflection within the radiance sphere, leaky radiation within the radiance sphere, radiated near field (fresnel zone), and radiated far field to infinity (fraunhofer zone) shown in fig. 3. The length of the dipole antenna is 2l,/>And/>Representing different distances.

Referring to fig. 4, fig. 5, fig. 6 and fig. 7, fig. 4 is a schematic view of the vertical section of a dipole antenna according to an embodiment of the present application, fig. 5 is a schematic view of the horizontal section of a dipole antenna according to an embodiment of the present application, fig. 6 is a schematic view of the vertical section of a monopole antenna according to an embodiment of the present application, and fig. 7 is a schematic view of the horizontal section of a monopole antenna according to an embodiment of the present application. Fig. 4 to 7 show the directivity of the vertical antenna of the radio station and the station detecting device, 2r represents the antenna diameter of the vertical dipole antenna, and Δ represents the spacing between the antennas, and the infinite ideal conductive plane is also shown. The length of the dipole antenna is 2l, and λ represents the wavelength of the electromagnetic wave.

In the detection process, the working connection of the radio station is not changed, and the detection equipment is connected with the radio station without any physical interface, so that the detection efficiency of main working parameters of the radio station is improved, and the requirements of the detection equipment on the rapidness, convenience, use and flexible operation of the radio station under the field severe environment are met. Referring to fig. 8 and fig. 9, fig. 8 is a schematic diagram of an interface connection for detecting a transmitter function according to an embodiment of the present application, and fig. 9 is a schematic diagram of an interface connection for detecting a receiver function according to an embodiment of the present application. The figure shows a radio station, a non-contact detection device (i.e. station detection device), a station antenna, a detection antenna, a coupling detection radius R (distance), a PTT (Push To Talk) key pressed during transmission, a 1kHz de-tuning played by a headset.

The principle of near field non-contact detection of the transmitter function of a radio station by the station detection device is as follows:

when the main operation parameters of the radio transmitter are detected, the detection equipment is set and operated in the corresponding detection operation mode of the radio transmitter. Referring to fig. 10, fig. 10 is a schematic block diagram illustrating non-contact detection of a transmitter function according to an embodiment of the present application. The figure shows a Radio station, a Radio station antenna, a detection antenna, a Push To Talk (PTT) key for transmission, a keyboard unit, a display unit, a control circuit, a Frequency selection channel, a program attenuator, a program amplifier, a power divider, an RF (Radio Frequency) shaping unit, an RF-RMS (Radio Frequency true value) detection unit, an a/D analog-To-digital conversion unit, a Frequency counting and Frequency hopping rate detection unit. The control circuit can transmit local oscillation signals to the frequency-selecting channel, and the frequency-selecting channel transmits intermediate frequency signals to the A/D analog-to-digital conversion unit.

Referring to fig. 11, fig. 11 is a flowchart of non-contact detection of a transmitter function according to an embodiment of the present application, which specifically includes the following steps: and setting working parameters of the radio station, and selecting the type, working mode and antenna pattern of the radio station in the radio station detection equipment. And judging to perform broadband detection or narrowband frequency selection detection. If broadband detection is carried out, pressing a PTT key of an earphone microphone set and transmitting power of a radio station; and performing operations such as sampling an RMS detection value, data averaging, automatic range adjustment working frequency counting, frequency hopping frequency counting and the like, processing, calibrating and converting the original data, displaying test data and further finishing detection. If narrowband frequency selection detection is carried out, setting frequency selection working frequency, pressing a PTT key of an earphone microphone set and transmitting power of a radio station; and performing operations such as sampling an RMS detection value, data averaging, automatic range adjustment and the like, processing, calibrating and converting the original data, displaying test data and further finishing detection.

The radio station type is used for distinguishing whether an ultrashort wave frequency modulation radio station or a shortwave amplitude modulation radio station so as to determine the working frequency range and the signal modulation mode of the test signal; the working mode is used for determining whether the detection equipment detects radio station radiation signals in a broadband or frequency-selecting narrowband mode; the antenna pattern refers to that whip antennas with different lengths and patterns are configured on different radio stations, namely, vertical antennas, and the antennas with different patterns have different coupling coefficients, so that a correct detection result can be restored only after calibration.

When detecting the output power and frequency of a portable short-Wave or ultra-short-Wave radio transmitter, the short-Wave radio is required to be set into a constant-frequency and Continuous Wave (CW) working mode, and the ultra-short-Wave radio is required to be set into a constant-frequency working mode of a frequency modulation system; when the output power and the frequency hopping rate of the ultrashort wave frequency hopping radio transmitter are detected, the ultrashort wave frequency hopping radio is set To be in a frequency hopping working mode, a Push To Talk (PTT) is sent according To a radio station earphone microphone set, the transmitter of the radio station is enabled To work, the characteristic that electromagnetic radiation exists in the near field (radian sphere near field and radiation near field) of a radio station working antenna but the radiation power is large enough is utilized, the radiation signal is coupled To a detection device through an upright antenna or an induction wire, the processing of attenuation, amplification, detection, sampling, data calibration, signal shaping, counting and the like of an electric signal is completed by the detection device, and finally the detection of the output power, the frequency of the transmitter, the frequency hopping rate and the output power of the ultrashort wave frequency hopping radio station is realized under the fixed frequency working condition. When electromagnetic interference of a detection environment is complex, a frequency-selecting narrowband working mode can be started to realize signal detection.

Referring to fig. 12, fig. 12 is a schematic block diagram of a non-contact detection of a receiver function according to an embodiment of the present application, which shows a radio station, a station antenna, a detection antenna, a 1kHz tuning-down unit, a keyboard unit, a display unit, a control circuit, a radio frequency signal synthesizer, a power amplifier, and an output-10 dBm signal.

Referring to fig. 13, fig. 13 is a flowchart of non-contact detection of a receiver function according to an embodiment of the present application, and the specific process is as follows: setting the working parameters of a radio station in an on-duty state, and selecting the type, the working mode and the antenna pattern of the radio station for the radio station detection equipment; the detection device starts the frequency synthesizer to work, the 1kHz detection signal of the modulation signal is radiated and output through the antenna, and under the normal condition of a radio receiver, the 1kHz modulation sound can be heard from the earphone microphone set so as to finish detection.

The near field non-contact detection principle of the receiver function of a radio station is as follows: when a radio station receiver is detected, the radio station is required to work in a fixed-frequency receiving working mode, wherein a short-wave radio station is set to be in a fixed-frequency (continuous wave CW, a lower sideband LSB or an upper sideband USB) working mode, an ultra-short-wave radio station is set to be in a fixed-frequency working mode of a frequency modulation mode, detection equipment is set and made to work in the radio station receiver detection working mode, the working frequency of the radio station is required to be consistent with the working frequency of the detection equipment, and the volume of the radio station is set moderately. LSB (lower sideband ) refers to a modulation mode commonly used in short wave radio stations, and suppresses the modulation of the upper sideband and the lower sideband of carrier frequency; USB (upper sideband ) refers to a modulation scheme commonly used in short wave radio stations, suppressing the modulation of the lower sideband and the upper sideband of the carrier frequency. Although there is a large coupling attenuation between the radio station antenna and the detection antenna under the near field condition, a large attenuation is generated on the signal radiated by the detection device, and particularly, when the length of the detection antenna is short, the radiation performance is reduced, but the radio station receiver has a high receiving sensitivity enough to enable the receiver to receive the modulated wave radiated by the detection device, when the radio station receiver is normal in function, the working frequency of the radio station receiver is tuned to the frequency of the detection signal, the 1kHz single-tone modulation signal of the modulated wave transmitted by the detection device is demodulated, and the 1kHz detuning identifiable by human ears is output through the earphone microphone set of the radio station, thereby completing the detection of the radio station receiver. Under the near field condition, the antenna interface end of the detection equipment outputs a power signal of-10 dBm, the coupling coefficient between the antennas is not lower than-60 dB, and the power of the detected signal receivable by the antenna interface end of the detected radio station is not lower than-70 dBm so as to meet the function detection requirement of the radio station receiver.

The radio station detection equipment comprises a portable handle, a detection antenna, an OLED (Organic Light-Emitting Diode) display, an operation keyboard, a communication and simulation interface, +12V direct current power supply and charging interface, an AC/DC power adapter and a detection antenna BNC (Bayonet Neill-Concelman, a radio frequency cable connector, also called a Neil-Kang Saiman bayonet) interface seat. Referring to fig. 14, fig. 14 is a schematic diagram of an internal structure of a near-field non-contact radio station detection device for a handheld radio station according to an embodiment of the present application, which includes a display, a control unit (including a radio frequency signal generating circuit and an intermediate frequency circuit), a keyboard, a radio frequency front unit, a power supply battery, a communication and simulation interface, and a +12v power interface.

Referring to fig. 15, fig. 15 is a schematic block diagram of a near-field non-contact radio station detection device for a handheld radio station according to an embodiment of the application. The working parameters of the radio antenna of the radio station are 1 MHz-520 MHz, 0.1W-30W (+20 dBm- +45 dBm) and the working parameters of the detection antenna of the radio station detection equipment are 1 MHz-520 MHz. The structure of the radio station detection device comprises: the power supply comprises an AC/DC power adapter +12V interface, a communication and simulation interface, a keyboard unit, a display unit, a built-in 4100mAh/+7.2V rechargeable lithium ion battery, a power supply and charging circuit, an electricity meter circuit, a power supply and charging unit, a main control MCU and control circuit, a radio frequency power detection signal A/D, an intermediate frequency detection voltage A/D, an FPGA, an A/D external voltage reference (+2.048V), a buzzer driving circuit, a radio frequency signal generating circuit (used for controlling and supplying power), a signal shaping unit, an isolation amplifying unit, an analog electronic switch and a control unit. The intermediate frequency circuit unit comprises a true root mean square response power detector and an isolation amplified variable gain of 0 to +30dB. The radio frequency signal generating circuit comprises an RF power amplifier, a power divider, a signal generator DDS and a frequency reference 20MHz, and the working parameters of the radio frequency signal generating circuit are 1 MHz-30 MHz (AM), 30 MHz-120 MHz (FM) and 1 MHz-120 MHz (LO). The radio frequency signal generating circuit may output a radio frequency signal (RF: AM, FM), a local oscillation signal (LO). AM (Amplitude Modulation), amplitude modulation, double sideband modulation including carrier; FM (Frequency Modulation), frequency modulation; LO (local oscillator) is a local oscillator, called local oscillator for short, which is a signal source for implementing frequency conversion on the detected radio frequency signal; RF (radio frequency), radio frequency. The radio frequency pre-unit comprises a radio frequency switch, a radio frequency switch and a local oscillator signal (LO), wherein the parameters of the radio frequency pre-unit are as follows ：1MHz～30MHz(AM),>-20dBm;30MHz～120MHz(FM),>-30dBm;1MHz～520MHz,(-10dBm～+25dBm)+Δb,1MHz～120MHz/-10dBm., the attenuation control parameters of the program-controlled attenuator are 0dB/-10dB, and the amplification control parameters of the program-controlled amplifier are 0dB/+10dB. The radio frequency signal generating circuit further comprises a power divider, an amplifier and an RF shaping unit. The radio frequency signal generating circuit can perform low-pass filtering and isolation amplification and further comprises a true root mean square response power detector and a gain adjustment unit. The radio frequency pre-unit control and power supply, the intermediate frequency signal if=150 kHz, the radio frequency power detection signal p_dc, the radio frequency shaping output signal rf_count are also shown. XS1 and XP1 represent two different elements or connectors on the electrical schematic.

The radio station detecting device has a radio station transmitter detecting function, such as detecting output power, frequency and frequency hopping rate of the radio station transmitter, and detecting a radio station receiver function. Referring to table 1, table 1 shows performance characteristics requirements of a handheld radio near field contactless station detection device.

Table 1 radio near field non-contact radio station detection device performance characteristics requirement table

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The basic technical requirements of a radio station near field contactless detection device are presented in table 2.

Table 2 table of basic specifications of near field non-contact detection devices for radio stations

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When the receiver function of a radio station is detected, the radio station detection equipment can realize function detection, when the antenna interface end of the detection equipment outputs a power signal of-10 dBm under the near field condition, if the coupling coefficient between antennas is not lower than-60 dB, the power of the receivable detection signal of the antenna interface end of the detected radio station is not lower than-70 dBm, and the function detection requirement of the radio station receiver can be met, wherein the coupling coefficient refers to the difference between the average output power value of the antenna interface end of the radio station and the original test quantity during non-contact detection.

Referring to fig. 16, fig. 16 is a schematic block diagram of a handheld radio near-field non-contact detection device with spectrum analysis function according to an embodiment of the present application, where the handheld radio near-field non-contact detection device not only can implement the functions of the handheld radio near-field non-contact detection device, such as detecting the main functions of a radio transmitter, but also can implement rapid detection of the spectrum characteristic and the digital modulation characteristic of a radio. The non-contact detection device, namely the radio station detection device, comprises a receiving antenna unit and a signal receiving unit. The working parameters of the receiving antenna unit are 0-540 MHz/0- +30dB, and the OQA (Optic Quantum Antune, optical quantum antenna) is a radio frequency signal sensor with high gain and wide dynamic range. The signal receiving unit shows a receiving module 1 (for front-end overscan protection attenuation and amplification range control), a receiving module 2 (impedance transformation, 0-60 dB of a programmable attenuator, 0-60 dB of a programmable amplifier, and a low-pass filter LPF), a receiving module 3 (including 0-33 dB of a programmable attenuator), a receiving module 4 (including 0- +60dB of a programmable low-noise amplifier LNA), a receiving module 5 (including a programmable low-pass filter PCLPF), a receiving module 6 (with parameters of 1 MHz-140 MHz, 1 MHz-101 MHz, 141 MHz-540 MHz, an intermediate-frequency low-pass filter LPF 110MHz, a local oscillation signal source 139MHz/239MHz/339 MHz/439MHz), a receiving module 7 (with parameters of 108dB, 50 omega, A/D18 bit/350 MSa/s), and a receiving module 8 (including a received signal digital processing module). The diagram also shows that the transmitting antenna unit, the antenna coupling coefficient is less than or equal to-40 dB, and the signal input range is +23dBm to-70 dBm 200mW. The figure also shows a signal transmitting unit, transmitting modules 1-7, antenna tuning insertion loss-6 dB, broadband power amplification 0- +29dB, a program-controlled attenuator 0-70 dB, reverse power protection, short-circuit protection antenna tuning and program-controlled attenuation control, 0dBm, a program-controlled low-pass filter PCLP, signal digital synthesis and a transmitting signal digital processing module. The figure also shows a control unit, a BIT (Built-in Test), an optocoupler, a BIT interface, an audible and visual alarm module, a bottom control module, a computer system module, a man-machine interaction interface (keyboard and the like), a display, a communication interface, azimuth and ranging, an infrared ultrasonic magneto-optical sensing interface, a measuring channel and a power supply unit. The operating parameters of the receiving module 2 are 0-1 MHz (low frequency and static electricity), LO is a local oscillator for performing frequency conversion, and K1, K2, K3 and K4 represent switches.

The radio station detection equipment adopts a modularized design, thereby bringing convenience to system upgrading. When the detection device is portable or handheld, the modules or units of each unit can be designed in an integrated manner so as to reduce power consumption and volume. The working frequency range of the detection system is 1 MHz-540 MHz, and if the upper limit working frequency is increased, the corresponding module can meet the working requirement of the system after being upgraded. The main unit functions in the radio station detection equipment include:

a) A receiving antenna unit;

the receiving antenna unit can use an omni-directional antenna or a sensor, and the gain of the sensor can reach more than +30 dB.

B) A signal receiving unit;

the total gain of the system is +90dB, the dynamic range of the gain is 144dB, the dynamic range of the full signal is 174dB, and the gains of all modules in the receiving unit are reasonably distributed according to the requirements of the system gain and the dynamic range.

C) A transmitting antenna unit;

d) A signal transmitting unit;

e) A control unit;

f) Other units, etc.

The design scheme of the intermediate frequency conversion of the receiving signals of the short wave and ultrashort wave working frequency bands of 1 MHz-540 MHz is as follows:

a) Dividing frequency bands;

In order to reduce the cost of the A/D of the received signal and the digital processing module and simplify the design of the local oscillation signal, the digital measurement of the high-frequency signal can be satisfied by a down-conversion method, which comprises the following steps: in the frequency range of 140 MHz-540 MHz, the down-conversion can be realized by dividing the frequency range, each frequency range is not more than one octave, the bandwidth after the frequency conversion is 100MHz, the frequency range is 1 MHz-101 MHz, the local oscillation signal is only four point frequencies, and the five frequency range divisions and the frequency down-conversion are shown in Table 3.

TABLE 3 Down-conversion table of frequency of received signal in short wave and ultrashort wave frequency bands

After the down-conversion scheme is adopted, only 1 intermediate frequency filter (a low-pass filter, 1 MHz-101 MHz, and a cut-off frequency of 110MHz is selected to reduce fluctuation and attenuation of high-frequency band signal amplitude, and a transition band gives a 9MHz allowance), 139MHz, 239MHz, 339MHz and 439MHz local oscillator leakage and sum frequency signals can be filtered, intermediate frequency signals are reserved, meanwhile, the down-conversion scheme has an anti-aliasing filtering effect, and the design requirements of the frequency conversion design on local oscillators (frequency stepping is only 1MHz and can be completely realized by high-speed DDS) and the filters are greatly reduced.

B) Sampling and digital processing:

The frequency range of 1 MHz-140 MHz is directly sampled (frequency resolution is 1 Hz), the requirement on the A/D converter is greatly reduced, meanwhile, a high-precision A/D converter can be used, if 2.5 times of sampling is used, the highest sampling frequency of the A/D converter is 350MSa/s, the A/D converter with a high dynamic range is easy to purchase by using the sampling rate, the device selection range is large, and the digital processing of intermediate frequency signals of high-frequency signals is completely satisfied. Such an embodiment is reasonable and easy to implement.

The purpose of generating the output signals of the short wave and ultrashort wave working frequency ranges from 1MHz to 540MHz is to detect the functions and the performances of a receiver, and the output signals and the modulated spectrum quality are not excessively high. As the working clock frequency of the high-speed DDS device can reach several GHz, a direct digital synthesis method is adopted to generate a high-frequency test signal. In order to ensure the spectral quality of the signal, the following measures must be taken: filtering clock frequency (frequency band division of the high frequency generator is shown in table 4) and signal spurs by frequency band division filtering; the DDS clock source is a synthetic source, and the phase noise, the phase jitter and the frequency temperature stability of the clock source are required to meet the requirements of a shortwave and ultrashort wave radio on frequency reference related indexes.

TABLE 4 frequency division table for output signals of short wave and ultrashort wave frequency bands

The received signal digital processing module comprises a digital filtering and FFT (fast Fourier transform) analysis module and a vector signal IQ (In-phase/Quadrature) demodulation module. The digital filtering and FFT module implements the spectral analysis and digital filtering functions, the functions of which are shown in table 5.

Table 5 digital filtering and FFT module function table

C) Digital modulation analysis:

the main content of the digital modulation analysis is vector signal analysis, other analysis methods are combined, and the digital modulation performance of the measured signal is analyzed through quadrature demodulation. The content of the digital modulation analysis includes:

power measurement: carrier power, adjacent channel power, burst power, etc.;

Frequency measurement: carrier frequency, occupied bandwidth, etc.;

Time sequence measurement: for pulse signals, pulse repetition period, rise time, fall time, duty cycle measurement, etc.;

Modulation accuracy measurement: error vector magnitude, IQ magnitude error, IQ phase error, IQ origin offset.

The radio station near field non-contact detection calibration method is described as follows:

The most important content related to the near-field non-contact detection calibration of the radio station is the detection calibration of the output power of the radio station, the calibration of other parameters is not in the description range of the patent, and the calibration of other parameters, such as frequency, modulation degree, frequency hopping rate and the like, is irrelevant to an antenna or a sensing line, and the parameters can be subjected to contact calibration by referring to related patents or standards.

Referring to fig. 17, fig. 17 is a schematic diagram of a calibration flow of a non-contact detection device for a radio station, wherein after entering the non-contact detection calibration flow of the radio station, a near-field or far-field calibration environment is selected, a near-field detection and calibration distance is set, near-field detection and calibration parameter items are set, the calibration device is sleeved, near-field data is tested, recorded and processed, calibration data software of the non-contact detection device is processed, the near-field calibration data of the non-contact detection device is rechecked, namely, detection and verification are performed, whether the verification is qualified is judged, if the verification is qualified, the non-contact detection calibration flow of the radio station is finished, and if the verification is not qualified, fault cause searching is performed. The calibration device alignment sleeve comprises: test receiver (including spectrometer) and standard upright detection antenna, calibrated station and station standard working antenna, non-contact detection equipment and working antenna.

The requirements of the power detection technology during the near-field non-contact detection of the radio station are shown in table 6, the calibration frequency points and the wavelengths of the power detection during the near-field non-contact detection of the radio station are shown in table 7, and the calibration flow of the near-field non-contact detection equipment of the radio station is shown in table 8.

Table 6 table of power detection specifications for near field non-contact detection of radio stations

Table 7 calibration frequency point and wavelength table for power detection in near field non-contact detection of radio station

Table 8 radio station near field non-contact detection device calibration flow chart

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Referring to fig. 18, fig. 18 is a schematic diagram of near-field calibration environment requirements of a radio non-contact detection device provided by an embodiment of the present application, where an environmental interference source, a calibration radio are powered by an external AC/DC power adapter, a PTT key is pressed during transmitting, a radio antenna, a coupling detection radius R (distance), a detection antenna, a non-contact detection device (powered and charged by an AC/DC power adapter), an allowable 2 ° inclined plane, a maximum elevation angle allowed by a remote obstacle 4 °, a remote interference source, a remote obstacle, a plane, and a ground have uniform conductivity, and a distance between the calibration radio and the interference source is 12.5m.

Referring to fig. 19, fig. 19 is a schematic diagram of far-field calibration environment requirements of a non-contact detection device for a radio station, which is provided by the embodiment of the application, and shows an environmental interference source, a calibration radio station powered by an external AC/DC power adapter, a PTT key pressing during transmitting, a radio station antenna, a calibration radio station, a detection antenna, a field intensity meter or a test receiver, a remote interference source, a remote obstacle, and a plane (the ground has uniform conductivity). Each distance is 1 to 2 times the operating wavelength in the above-mentioned calibration environment.

Referring to fig. 20, fig. 20 is a schematic diagram of a calibration through detection connection of output power of a radio antenna port according to an embodiment of the present application, where a PTT key, a radio antenna interface, an attenuator, a detection device antenna interface, a non-contact detection device, and a test receiver are shown in the figure during transmission.

Referring to fig. 21, fig. 21 is a schematic diagram of near-field original detection data connection of a radio non-contact detection device according to an embodiment of the present application, where PTT key, radio whip antenna, near-field calibration coupling detection radius R, calibration and detection antenna, and non-contact detection device are shown in the figure.

Referring to fig. 22, fig. 22 is a schematic diagram of near-field calibration configuration and connection of a radio non-contact detection device according to an embodiment of the present application, where (a) shows a near-field calibration coefficient detection placement (top view) effect, and (b) shows a near-field calibration coefficient detection connection effect, and (b) shows east, south, west, north, 0 ° to 315 °, radio whip antenna, calibration and detection antenna, coupling detection radius R, measurement instrument (placed at 45 ° intervals), PTT key press during transmission, earphone microphone set interface cable, near-field calibration coupling detection radius, test receiver and test stand.

Referring to fig. 23, fig. 23 is a schematic diagram of near-field inductive wire calibration configuration and connection of a non-contact detection device for a radio station, which is provided in an embodiment of the present application, and shows that a radio station, an earphone microphone set interface cable, a PTT key is pressed during transmission, a sampling distance h=10 cm-20 cm, an inductive wire insulation fastening clip, a radio whip antenna, an inductive wire storage box, an inductive wire (an inductive wire detection length L is 1.5 m), an inductive wire conductive fastening clip, a test receiver, and a calibration and detection antenna are collected to a shortest position. Remarks: the length of the induction line is 1.5m; the induction line is vertical to the radio whip antenna; the sampling position of the induction line is about 10 cm-20 cm away from the antenna port.

Referring to fig. 24, fig. 24 is a schematic diagram of far-field calibration configuration and connection of a radio station non-contact detection device according to an embodiment of the present application, where (a) is a far-field calibration coefficient detection placement (overlook) effect, and (b) is a far-field calibration coefficient detection connection effect. The figure also shows east, south, west, north, 0 °, 90 °, 180 °, 270 °, radio station whip antenna, calibration and detection antenna, far field calibration detection distance D one to two wavelengths, measurement instrument, PTT key press during transmission, earphone microphone set interface cable, field intensity meter or test receiver, laboratory bench.

The purpose of the power calibration is to ensure that the power detection value meets the detection error requirements specified in the technical requirements of the detection equipment. The basic technical method for power calibration is as follows: sampling is carried out in the near field, the measured value of the standard test equipment after metering is taken as a reference value, the difference between the sampled value and the reference value is taken as power calibration data, and the measured value of the tested object can be restored within a specified error range after the original sampled value is calibrated.

The near field power calibration formula is as follows:

the average equivalent output power expression of the antenna interface seat of the near field radio station is shown as formula (1):

Wherein: Representing the average equivalent output power of the antenna interface seat of the near-field radio station, wherein the unit is dBm; f represents a calibration frequency operating point, and the unit is MHz; r represents near field non-contact calibration and detection distance, and the unit is m; /(I) Representing a near field original radiation power detection average value of the detection device, wherein the unit is dBm, and the average value is obtained by averaging original test data; a _f (f) represents a frequency response calibration coefficient (detection device, pass-through) in dB; a _l(f₀) represents a linear calibration coefficient (detection device, pass-through) in dB; f ₀ denotes a linear calibration frequency operating point, MHz; /(I)The near field average calibration coefficient (system calibration) is expressed in dB. /(I)

The equivalent output power expression of the near-field antenna interface seat of each azimuth radio station is shown as (2):

Wherein: p _o(f,R,Ф_n) represents the equivalent output power of the antenna interface seat of each azimuth radio station in the near field, and the unit is dBm; f represents a calibration frequency operating point, and the unit is MHz; r represents near field non-contact calibration and detection distance, and the unit is m; phi n represents azimuth angle, and the unit is degree; Representing a near field original radiation power detection average value of the detection device, wherein the unit is dBm, and the average value is obtained by averaging original test data; a _f (f) represents a frequency calibration coefficient (detection device, through) in dB; a _l(f₀) represents a linear calibration coefficient (detection device, pass-through) in dB; f ₀ denotes a linear calibration frequency operating point, in MHz; a _m(f,R,Ф_n) represents the near field azimuth calibration coefficient (system calibration) in dB.

The near field azimuth calibration coefficient a _m(f,R,Ф_n) in formula (2) is shown in formula (3):

Wherein: a _m(f,R,Ф_n) represents near field azimuth calibration coefficients (system calibration) in dB; f represents a calibration frequency operating point, and the unit is MHz; r represents near field non-contact calibration and detection distance, and the unit is m; phi _n represents azimuth in degrees; an average value (straight-through measurement) of the output power of the station antenna end of standard test equipment is expressed, wherein the average value is obtained by averaging original test data; /(I) The average of the station radiation power measurement of standard test equipment in near field environment is expressed in dBm, and the average is obtained by averaging the original test data.

Near field power average calibration coefficientSee (4):

Wherein: represents the near field power average calibration coefficient (system calibration) in dB; a _m(f,R,Φ_n) represents the near field power calibration coefficient (system calibration) in dB at each azimuth; f represents a calibration frequency operating point, and the unit is MHz; r represents near field non-contact calibration and detection distance, and the unit is m; phi _n represents azimuth in degrees; m represents the total number of orientations.

The far field radiant power calibration formula is as follows:

If the calibration and detection environment is provided, far field calibration may be performed, with the far field distance D typically being selected to be one to two operating wavelengths. After detection and calibration, the detection equipment can synchronously detect the equivalent output power and the equivalent radiation power of the radio station under the near field condition. The average equivalent radiation power expression of the radio station is shown in the formula (5):

Wherein: The average equivalent radiation power of the radio station is expressed in dBm; f represents a calibration frequency operating point, and the unit is MHz; d represents a far-field non-contact calibration and detection distance, and the unit is m; /(I) Representing a near field original radiation power detection average value of the detection device, wherein the unit is dBm, and the average value is obtained by averaging original test data; a _f (f) represents a frequency calibration system (detection device, through) in dB; a _l(f₀) represents a linear calibration coefficient (detection device, pass-through) in dB; f ₀ denotes a linear calibration frequency operating point, in MHz; /(I)Represents the far field radiated power average calibration coefficient (system calibration) in dB.

The equivalent radiation power expression of each far-field azimuth radio station is shown in the formula (6):

Wherein: The equivalent radiation power of each radio station in the far field is expressed in dBm; f represents a calibration frequency operating point, and the unit is MHz; d represents a far-field non-contact calibration and detection distance, and the unit is m; phi _n represents azimuth in degrees; Representing the original power detection average value of the detection equipment, wherein the unit is dBm; a _f (f) represents a frequency response calibration system (detection device) in dB; a _l(f₀) represents a linear calibration coefficient (detection device) in dB; f ₀ denotes a linear calibration frequency operating point, in MHz; /(I) The far field radiant power calibration coefficient (system calibration) is expressed in dB.

The far-field radiation power calibration coefficients of all directions in the formula (6) are shown in the formula (7):

Wherein: -far field calibration coefficient (system calibration) in dB; f represents a calibration frequency operating point, and the unit is MHz; d represents a far-field non-contact calibration and detection distance, and the unit is m; phi _n represents azimuth in degrees; Representing a near field radiation power sampling average value of standard test equipment, wherein the unit is dBm, and the average value is obtained by averaging original test data; /(I) The mean value of the far-field radiated power measurement of standard test equipment, in dBm, is represented and is averaged over the raw test data.

Far field average radiant power calibration coefficientSee (8):

Wherein: a _fa(f,D,Φ_n) represents far-field radiation power calibration coefficients (system calibration) of all directions in dB; f represents a calibration frequency operating point, MHz; d represents the far field non-contact calibration and detection distance, m; phi _n represents the azimuth angle in degrees; n represents the total number of orientations.

Referring to fig. 25, fig. 25 is a flowchart of a non-contact detection operation of a radio transmitter according to an embodiment of the present application, where the process includes: after entering the non-contact detection operation flow of the radio transmitter, carrying out detection preparation, checking or self-checking non-contact detection equipment, checking and installing a detection antenna and a sensing wire, and ensuring that the working state of the detection equipment is good; the radio station installation detection, the checking and installation of an antenna and an earphone microphone set, the perfect installation and connection state of radio station equipment are ensured, the non-contact detection equipment is started, the parameters are set, the radio station type and the appointed test working frequency are selected; the radio station is started, and the working frequency is set so that the short-wave radio station works in a CW mode; the radio station and the detection equipment are arranged according to the figure, when the detection antenna is used, the distance R is 1m, and when the induction wire is used, the distance L is 1.5m (the length of the induction wire). And pressing the PTT key of the earphone microphone set, and directly reading the measured value of the detection equipment, such as equivalent output power, radiation power, working frequency and the like, by the transmitting power of the radio station. Judging whether each index detection is qualified, if so, ending the non-contact detection flow of the radio transmitter, and if not, searching for a fault reason.

Referring to fig. 26, fig. 26 is a flowchart of a non-contact detection operation of a radio receiver according to an embodiment of the present application, where the process includes: after entering the non-contact detection operation flow of the radio receiver, carrying out detection preparation, checking or self-checking non-contact detection equipment, checking and installing a detection antenna and a sensing wire, and ensuring that the working state of the detection equipment is good; the radio station installation detection, the checking and installation of the antenna and the earphone microphone set, and the good installation and connection state of radio station equipment are ensured; starting up the non-contact detection equipment, setting parameters, selecting the type of a radio station and the agreed test working frequency; the radio station is started, and the working frequency is set so that the short-wave radio station works in a CW mode; the radio station and the detection equipment are arranged according to the diagram, when the detection antenna is used, the distance R is 1m, and when the induction wire is used, the distance L is 1.5m (the length of the induction wire); the non-contact detection device transmits power (port power is 0 dBm), and the voice output of the earphone microphone set is used as a detection mark. Judging whether the detection is qualified, if so, ending the non-contact detection flow of the radio receiver, and if not, searching for a fault reason.

A radio station near field non-contact detection operation method using an antenna is shown in fig. 21, and a radio station non-contact detection operation method using a sense line is shown in fig. 23. The radio station determines the basic and complete working states of the radio station after non-contact detection as shown in tables 9 and 10.

Table 9 radio station near field non-contact detection result radio station basic working state judgement table

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Table 10 comprehensive judging table for radio station complete working state

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Under laboratory conditions, a set of radio station near field non-contact detection calibration test data are shown in tables 11-16. The coupling coefficient in the table refers to the difference between the average output power value of the antenna interface port of the radio station and the original test quantity during non-contact detection.

Table 11 test record table for short-wave radio station low power output test with specified test radius and different direction

Table 12 table for testing and recording high power output of short wave radio station at specified radius and different direction

Table 13 table for test of low power output of ultrashort wave radio station at specified radius and azimuth

Table 14 table of power output test in ultrashort wave radio station with defined test radius and azimuth

Table 15 experiment record table for influence of induction line length on output power detection of short-wave radio station

Table 16 experiment record table for influence of induction line length on output power detection of ultra-short wave radio station

Under laboratory conditions, a group of non-contact detection data of the near field non-contact detection of the radio station by using non-contact detection equipment are shown in tables 17-20, and the result meets the application requirements.

Table 17 non-contact detection recording table for output power and frequency of short wave radio transmitter

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Non-contact detection recording table for output power and frequency of transmitter of table 18 ultrashort wave radio station

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Non-contact detection recording table for table 19 short wave radio receiver function

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Non-contact detection recording table for table 20 ultrasonic radio receiver function

The radio station non-contact detection system provided by the embodiment of the application is applied to radio station detection equipment provided with a wireless transmission line, wherein the wireless transmission line comprises an antenna and/or an induction line, and the radio station non-contact detection system comprises:

Further, the method further comprises the following steps:

The receiver function test module is used for sending an audio modulation signal to the radio station through the wireless transmission line if a receiver function test instruction is received; and the method is also used for judging whether the radio station outputs demodulation sound corresponding to the audio modulation signal or not; if yes, judging that the receiver of the radio station is normal in function; if not, the receiver of the radio station is judged to be abnormal.

Further, the method further comprises the following steps:

And the frequency setting module is used for setting the working frequency of the radio station detection equipment before the audio modulation signal is sent to the radio station through the wireless transmission line so as to enable the working frequency of the radio station detection equipment to be consistent with the working frequency of the radio station.

Further, the method further comprises the following steps:

The first coefficient storage module is used for receiving a first power calibration instruction before the corresponding power calibration coefficient is read according to the model of the radio station and the working antenna parameters, detecting a test signal output by the radio station at a fixed position to obtain a first power detection value, and calculating an average power calibration coefficient according to the difference value between the first power detection value and a power standard value; and the wireless radio station is also used for storing the corresponding relation between the model number and the working antenna parameter of the wireless radio station and the average power calibration coefficient.

Further, the method further comprises the following steps:

the second coefficient storage module is used for receiving a second power calibration instruction, detecting test signals output by the radio station at a plurality of preset positions to obtain a second power detection value, and calculating a multi-azimuth power calibration coefficient according to average difference values of all the second power detection values and the power standard value; wherein the distance between each preset position and the radio station is the same; and the wireless radio station module is also used for storing the corresponding relation between the model number and the working antenna parameter of the wireless radio station and the multi-azimuth power calibration coefficient.

Further, the method further comprises the following steps:

The third coefficient determining module is used for carrying out frequency characteristic calibration on the radio frequency front-end channel of the radio station detection equipment and the power detector to obtain the frequency response calibration coefficient; and the radio station detection equipment is also used for controlling the radio station detection equipment to perform linear calibration at a preset frequency point to obtain the linear calibration coefficient.

Further, the signal calibration module processes the coupled sampled signal based on the current calibration coefficient combination, and the process of obtaining the target parameter value includes: decomposing the coupling sampling signal to obtain power information, frequency information and frequency hopping rate information; sequentially performing signal scaling operation, detection operation and sampling operation on the power information in the coupling sampling signal to obtain intermediate information, and performing data calibration on power parameters in the intermediate signal by using the current calibration coefficient combination to obtain a power equivalent parameter value; wherein the scaling operation includes an attenuation operation or an amplification operation; performing signal scaling operation, signal shaping operation and counting operation on the frequency information and the frequency hopping rate information in the coupling sampling signal to obtain a frequency measurement value and a frequency hopping rate measurement value;

Since the embodiments of the system portion and the embodiments of the method portion correspond to each other, the embodiments of the system portion refer to the description of the embodiments of the method portion, which is not repeated herein.

The present application also provides a storage medium having stored thereon a computer program which, when executed, performs the steps provided by the above embodiments. The storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The application also provides an electronic device, which can comprise a memory and a processor, wherein the memory stores a computer program, and the processor can realize the steps provided by the embodiment when calling the computer program in the memory. Of course the electronic device may also include various network interfaces, power supplies, etc.

In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it will be apparent to those skilled in the art that the present application may be modified and practiced without departing from the spirit of the present application.

It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A radio station non-contact detection method, characterized by being applied to a station detection apparatus provided with a radio transmission line including an antenna and/or an induction line, comprising:

2. The radio station non-contact detection method according to claim 1, further comprising:

if yes, judging that the receiver of the radio station is normal in function;

if not, the receiver of the radio station is judged to be abnormal.

3. The radio station non-contact detection method according to claim 2, further comprising, before transmitting an audio modulation signal to the radio station via the wireless transmission line:

4. The method of claim 1, further comprising, prior to reading the corresponding power calibration coefficients based on the model of the radio station and the operating antenna parameters:

5. The method of claim 1, further comprising, prior to reading the corresponding power calibration coefficients based on the model of the radio station and the operating antenna parameters:

6. The radio station non-contact detection method according to claim 1, further comprising, before determining the frequency response calibration coefficient and the linear calibration coefficient of the station detection device:

7. The method of any of claims 1 to 6, wherein processing the coupled sampled signals based on the current calibration coefficient combination to obtain target parameter values comprises:

8. A radio station non-contact detection system, characterized by being applied to a station detection device provided with a radio transmission line including an antenna and/or an induction line, comprising:

9. An electronic device comprising a memory and a processor, the memory having stored therein a computer program, the processor, when invoking the computer program in the memory, performing the steps of the radio station contactless detection method according to any of claims 1-7.

10. A storage medium having stored therein computer executable instructions which when loaded and executed by a processor perform the steps of the radio station non-contact detection method according to any of claims 1 to 7.