CN115664558A - Electromagnetic spectrum monitoring equipment and control method thereof - Google Patents
Electromagnetic spectrum monitoring equipment and control method thereof Download PDFInfo
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- CN115664558A CN115664558A CN202211303357.8A CN202211303357A CN115664558A CN 115664558 A CN115664558 A CN 115664558A CN 202211303357 A CN202211303357 A CN 202211303357A CN 115664558 A CN115664558 A CN 115664558A
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Abstract
The invention discloses electromagnetic spectrum monitoring equipment, which comprises a monitoring host, a monitoring antenna and an operation display and control terminal, wherein the monitoring host is connected with the monitoring antenna; the monitoring antenna is connected with the monitoring host, and the monitoring antenna receives signals by utilizing each section of antenna; the monitoring host acquires signals received by the monitoring antenna, completes the rapid sensing of frequency spectrum signals and provides power supply guarantee for the whole equipment; the operation display control terminal is connected with the monitoring host to complete signal sorting, signal parameter measurement, signal comparison analysis and data recording and playback. The invention also discloses a control method of the electromagnetic spectrum monitoring equipment. The electromagnetic spectrum monitoring equipment provided by the invention can monitor, analyze, process, store and distribute the electromagnetic spectrum of the monitored position in real time and support the playback of electromagnetic data through the mutual cooperation of the monitoring host, the monitoring antenna, the operation display and control terminal and the auxiliary equipment.
Description
Technical Field
The invention relates to the technical field of electromagnetic spectrum monitoring, in particular to electromagnetic spectrum monitoring equipment and a control method thereof.
Background
The electromagnetic spectrum refers to a family of electromagnetic waves that are arranged in succession according to their wavelength (or frequency). In military affairs, the electromagnetic spectrum is not only a carrier for transmitting information, but also an important means for detecting enemy conditions, so that the electromagnetic spectrum becomes one of the high points of competition of the two parties of the battle; an electromagnetic spectrum monitor is an instrument used in the technical field of electronics and communication.
The electromagnetic spectrum monitoring system has wide application in the fields of military and civilian spectrum management and control, radio equipment outfield tests, important and important safety protection and the like, along with the continuous development of software radio, integrated circuits, microwave radio frequency and artificial intelligence technologies, the types of electromagnetic radiation sources are more and more, so that frequency resources are more and more crowded, the signal power range is continuously increased, and the requirements on the monitoring frequency range, the weak signal receiving capacity, the high-power signal receiving capacity and the like of the spectrum monitoring system are higher and higher. The electromagnetic spectrum monitoring equipment carries out broadband spectrum rapid scanning, detects, identifies and intercepts signals of conventional and complex types of communication, radar and the like in real time through a radio monitoring means, and stores data of signal analysis, processing, monitoring information and the like in a computer terminal, and can also report the data to a command center through a communication link.
Conventional electromagnetic spectrum monitoring systems can be divided into: 1. single channel superheterodyne receiver: the method can only receive one signal at a time, realizes full-band monitoring through the back-and-forth tuning of local oscillation signals in the whole frequency band, has low speed and extremely poor real-time performance, is limited by the local oscillation signals, and has almost zero possibility of realizing ultra-wideband scanning one by one; 2. analog multichannel receiver: the analog end is in parallel with multiple paths and receives simultaneously, and local oscillator signals are not required to be tuned back and forth, so that the real-time performance is good, and the defects of fixed analog channel bandwidth, low flexibility, large volume and high cost are overcome; 3. wide intermediate frequency superheterodyne receiver: the broadband receives a plurality of signals in a frequency spectrum range simultaneously, the real-time performance is relatively good, the rear end is generally matched with digital signal processing, and the dynamic range of a narrowband monitoring system is small.
In the prior art, the traditional electromagnetic spectrum monitoring equipment can only monitor, analyze, process and store the electromagnetic spectrum of a monitored place, but cannot realize subscription and distribution of electromagnetic spectrum data; meanwhile, the traditional electromagnetic spectrum monitoring equipment also has the problems of low monitoring sensitivity and incapability of realizing panoramic monitoring scanning.
Disclosure of Invention
The invention aims to provide electromagnetic spectrum monitoring equipment and a control method thereof, which are used for solving the technical problems that the traditional electromagnetic spectrum monitoring equipment in the prior art cannot realize subscription and distribution of electromagnetic spectrum data, and meanwhile, the traditional electromagnetic spectrum monitoring equipment is low in monitoring sensitivity and cannot realize panoramic monitoring scanning.
In order to achieve the above object, an embodiment of the present invention provides an electromagnetic spectrum monitoring device, which includes a monitoring host, a monitoring antenna, and an operation display and control terminal;
the monitoring antenna is connected with the monitoring host, and the monitoring antenna receives signals by utilizing each section of antenna;
the monitoring host acquires signals received by the monitoring antenna, completes rapid sensing of frequency spectrum signals and provides power supply guarantee for the whole equipment;
the operation display control terminal is connected with the monitoring host to complete signal sorting, signal parameter measurement, signal comparison analysis and data recording and playback.
In a preferred embodiment of the present invention, the electromagnetic spectrum monitoring device further includes a device packaging box.
In one preferred scheme of the invention, the monitoring host comprises a radio frequency receiving module, an intermediate frequency processing module and a power supply module;
the radio frequency receiving module is used for acquiring a radio frequency signal of the monitoring antenna and realizing frequency spectrum monitoring; the intermediate frequency processing module is used for realizing interface communication, control and management of the radio frequency receiving module and the monitoring antenna;
the power supply module is used for providing power supply guarantee for the whole equipment.
In a preferred embodiment of the present invention, the radio frequency receiving module includes a radio frequency receiving channel unit and a local oscillator unit;
the radio frequency receiving channel unit is used for carrying out analog domain processing of amplification, filtering and frequency mixing on an input radio frequency signal and converting the radio frequency signal into an intermediate frequency signal; the local oscillator unit is used for realizing logic control on the radio frequency receiving channel unit,
in a preferred embodiment of the present invention, the rf receiving channel unit includes a radio frequency preselection module, a first intermediate frequency module, a second intermediate frequency module, a control module, a radio frequency power module, and a frequency synthesizer module.
In a preferred embodiment of the present invention, the monitoring antenna includes a short wave antenna, an ultra-short wave antenna, a microwave antenna, and a switching amplifying assembly.
In one preferred scheme of the invention, the operation display control terminal comprises a local display control terminal and a handheld display control terminal.
Based on the electromagnetic spectrum monitoring equipment disclosed by the invention, the invention also discloses a control method of the electromagnetic spectrum monitoring equipment, which comprises the following steps:
step (1): receiving an electromagnetic spectrum monitoring signal;
step (2): rapidly sensing and converting electromagnetic spectrum monitoring signals;
and (3): sorting the signals, measuring the parameters of the signals, comparing and analyzing the signals, and recording and playing back the data.
In conclusion, the beneficial effects of the invention are as follows:
1. the electromagnetic spectrum monitoring equipment can monitor, analyze, process, store and distribute the electromagnetic spectrum of a monitored position in real time and support the playback of electromagnetic data through the mutual cooperation of the monitoring host, the monitoring antenna and the operation display control terminal; meanwhile, the electromagnetic spectrum monitoring equipment can scan discrete channels, perform panoramic scanning in a monitoring frequency range, and realize rapid acquisition, parameter measurement, demodulation identification, data display and statistical analysis on newly-appeared signals.
2. The electromagnetic spectrum monitoring equipment can display the electromagnetic information such as the deployment of the monitoring equipment, the occupation distribution of the electromagnetic spectrum, the spectrum characteristics and the like in real time, the display range of the geographic information is not less than 30km multiplied by 30km, and the electromagnetic spectrum monitoring equipment also has the characteristics of inheritance, universality, modularization, reliability and integration.
Drawings
FIG. 1 is a diagram of an electromagnetic spectrum monitoring apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram of functional modules of an RF receive channel unit in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of a switch assembly in accordance with one embodiment of the present invention;
fig. 4 is a schematic diagram of an electromagnetic spectrum monitoring apparatus according to an embodiment of the present invention.
Detailed Description
The invention provides an electromagnetic spectrum monitoring device which comprises a monitoring host, a monitoring antenna and an operation display and control terminal, and is shown in figure 1.
The monitoring antenna is connected with the monitoring host, and the monitoring antenna receives signals by utilizing each section of antenna and sends the received signals to the monitoring host. The monitoring antenna comprises a short wave antenna, an ultra-short wave antenna, a microwave antenna and a switch amplification assembly.
The parameters of the short wave antenna are as follows: the working frequency range is 1.5 MHz-30 MHz, the polarization mode is vertical polarization, the directional diagram is horizontal omnidirectional, and the gain is as follows: more than or equal to-20 dBi, standing-wave ratio: less than or equal to 3.0, gain: not less than 20dB, noise coefficient: 2dB or less, OIP3: not less than 40dBm, P-1dB saturation output power: not less than 25dBm, power supply: coaxial feed, 9-15V, less than or equal to 100mA, impedance of 50 omega, size: less than or equal to H1800mm multiplied by phi 30mm, and the size after splitting is as follows: h600mm multiplied by phi 100mm is less than or equal to, and the weight of the antenna is as follows: less than or equal to 0.8Kg.
The parameters of the ultra-short wave antenna are as follows: the working frequency range is 30 MHz-3000 MHz, the polarization mode is vertical polarization, the directional diagram is horizontal omnidirectional, and the gain is as follows: typical values are greater than or equal to 0dBi, standing-wave ratio: 3.0 ≦ (typically, maximum not exceeding 3.5), impedance: 50 Ω, outer dimension: h600mm multiplied by phi 50mm, color: army green, antenna weight: less than or equal to 0.8kg, radio frequency interface: N-50J.
The parameters of the microwave antenna are as follows: the working frequency range is 2 GHz-18 GHz, the polarization mode is vertical polarization, the directional diagram is horizontal omnidirectional, and the gain is as follows: typical values are greater than or equal to 2dBi, standing-wave ratio: 2.5 or less, impedance of 50 omega, and external dimension: h100 mm. Times. Phi.140 mm, color: army green, antenna weight; less than or equal to 0.5kg, radio frequency interface: SMA-50K, antenna installation mode: the joint is directly connected.
The switch amplification assembly is used for carrying out direct connection and amplification treatment on the ultra-short wave antenna and the microwave antenna, and the parameters are as follows: the working frequency is 1.5 MHz-18 GHz, and the insertion loss is as follows: IL is less than or equal to 1dB (short circuit), and gain: not less than 10dB, switch isolation: ISO is more than or equal to 50dB (1.5 MHz-3 GHz) or ISO is more than or equal to 40dB (3-18 GHz), and the on-off ratio is as follows: not less than 50dB (1.5 MHz-3 GHz) or not less than 40dB (3-18 GHz), switching time: 100ns, input output VSWR: 2 or less, and the control mode is as follows: TTL3.3. A schematic diagram of the switch assembly is shown in fig. 3.
The monitoring host is used for acquiring signals received by the monitoring antenna, finishing quick sensing of frequency spectrum signals, finding various signals in time and providing power supply guarantee for the whole equipment.
The monitoring host comprises a radio frequency receiving module, an intermediate frequency processing module and a power supply module.
The radio frequency receiving module is used for acquiring radio frequency signals of the monitoring antenna and realizing frequency spectrum monitoring. The radio frequency receiving module is composed of two parts, wherein direct sampling is adopted below 30MHz, a frequency conversion design is adopted between 30MHz and 18GHz, the receiving and spectrum monitoring of radio frequency signals are realized, the radio frequency receiving module mainly has the functions of reconnaissance, attenuation control, pre-preselection, power-on self-detection, local oscillator lock losing, over-temperature alarm and the like, and meanwhile, the radio frequency receiving module also supports three working modes of external reference clock, low noise, routine and low distortion.
The performance indexes of the radio frequency receiving module are as follows: a monitoring receiving function: reception frequency range: 1.5MHz to 18.0GHz, tuning time: 1ms (at arbitrary tuning steps), phase noise: ≦ 90dBc/Hz @10kHz (monotonically decreasing, no obvious boss on both sides), sampling clock output: frequency 100MHz, power 0dBm + -2 dBm, noise figure: ≦ 10dBm (typical value, low noise mode), second order intercept: third order intercept point of > 40dBm (typical value): > 10dBm (typical value), IF suppression: more than or equal to 70dB, image frequency suppression: 70dB or more, level measurement error: 2dB or less, and the maximum net gain of the link: 45dB, intermediate frequency: 1300MHz, medium frequency bandwidth: and (2) more than or equal to 500MHz, inputting a standing-wave ratio: 1.8 or less, input and output impedance: 50 Ω, operating temperature: -40 to +70 degrees; an input/output interface: radio frequency input connector: SMA,3, 50 Ω characteristic impedance, intermediate frequency output connector: SMA,2, 50 Ω characteristic impedance, sampling clock output connector: SMA,1, 50 Ω characteristic impedance.
The radio frequency receiving module comprises a radio frequency receiving channel unit and a local oscillator unit. The radio frequency receiving channel unit is used for carrying out analog domain processing of amplification, filtering and frequency mixing on an input radio frequency signal and converting the radio frequency signal into an intermediate frequency signal, and comprises a channel input circuit, a first/second frequency mixer, a first/second intermediate frequency filtering and amplifying circuit, a radio frequency attenuation module, a channel gain control module and the like. The channel unit input circuit mainly comprises a mode selector switch, a digital adjustable attenuation circuit, a sub-octave filter bank and an input compensation amplifying circuit.
In order to reduce the switching loss of the switches in the conventional mode and the low-noise mode as much as possible and prevent the front-end dynamic index from being influenced by related circuits, the switches in the conventional mode and the low-noise mode of the front end adopt microwave switches with low insertion loss, high linearity and high isolation; in order to ensure the out-of-band second-order intercept point, intermediate frequency suppression, image frequency suppression and local oscillator leakage index of the whole machine, the front-end full-band input filter is composed of 15 sub-octave band-pass filters and 1 low-pass filter.
The radio frequency receiving channel unit comprises a radio frequency preselection module, a first intermediate frequency module, a second intermediate frequency module, a control module, a radio frequency power supply module and a frequency synthesis module according to a function module. According to the frequency division and the requirement of the intermediate frequency, the signals pass through different processing circuits: and ensuring that the intermediate frequency output is 1300MHz, performing channel gain control of filtering amplification and digital attenuation on the two mixed intermediate frequency signals, entering an intermediate frequency filter bank, and finally outputting the intermediate frequency and the bandwidth required by the system. Fig. 2 is a block diagram of functional modules of the rf receiving channel unit.
The local oscillator unit is used for realizing logic control on the radio frequency receiving channel unit and comprises a clock module, a first local oscillator, a second local oscillator, a control module, a power module, a state monitoring module and the like. The switch of the radio frequency receiving channel unit and the control of the digital adjustable attenuator are realized by a serial-to-parallel chip, the whole control logic is controlled by an FPGA chip of the local oscillator unit, and an independent logic controller is not arranged on the radio frequency receiving channel unit.
The intermediate frequency processing module is used for realizing interface communication, control and management of the radio frequency receiving module and the monitoring antenna. The intermediate frequency processing module adopts an FPGA + DSP processor architecture, integrates a 2-channel broadband high-speed ADC and a 2-channel broadband high-speed DAC converter, and realizes analog-digital/digital-analog acquisition and conversion.
The main functions of the intermediate frequency processing module are as follows: receiving and processing signals; system communication: the communication function between the system and the peripheral communication equipment is completed, the states of all the functional modules of the system can be reported in real time, and commands sent by the control system can be received; the command analysis is used for controlling distribution, receiving and analyzing the command sent by the control system and sending the command to the related subsystem to execute the command so as to complete the functions of switching, switching a receiving and sending channel, switching frequency and the like of the power amplifier unit; fault self-checking and state reporting: and the signal processing unit completes state self-checking after being powered on, summarizes and reports the BIT information and the parameter information of all the working modules sent by the antenna unit and the radio frequency unit.
The operation display control terminal is connected with the monitoring host to complete signal sorting, signal parameter measurement, signal comparison analysis and data recording and playback.
The operation display control terminal comprises a local display control terminal and a handheld display control terminal. The local display control terminal adopts a reinforced aluminum magnesium alloy structure, is small and light in whole, is responsible for receiving data input by the digital processing module, performs related analysis, processing, storage and other operations, provides two gigabit Ethernet ports for data transmission, supports a memory of 8GB DDR4 and has a hard disk storage space of more than 2 TB. The handheld display and control terminal has the use purposes that: when the battle mission is executed, a portable mode is mostly adopted, and the required display and control equipment has the characteristics of light operation and use, low power consumption, various communication capacities and the like. The portable display and control terminal is used for testing operation and the like in a time-place manner during routine monitoring.
The electromagnetic spectrum monitoring equipment also comprises an equipment packing box which is provided with a packing box for protecting the equipment and is convenient for protecting the equipment in the transportation process.
The working principle of the electromagnetic spectrum monitoring equipment is as follows: the signal is received by each section of antenna and then sent to the radio frequency receiving module, the signal is converted to the intermediate frequency through the receiver and then output, and then the signal enters the intermediate frequency processing and collecting unit, so that the spectrum signal is quickly sensed, various signals are found in time, the signal sorting, the signal parameter measurement, the signal comparison and analysis and the data recording and playback are completed through the operation of the display and control terminal, and the power supply module provides power supply guarantee for the whole equipment system. The working principle diagram of the electromagnetic spectrum monitoring device is shown in fig. 4.
A control method of an electromagnetic spectrum monitoring device comprises the following steps:
step (1): receiving electromagnetic spectrum monitoring signals through each section of antenna of the monitoring antenna;
step (2): the signal transmitted by the monitoring antenna is received by a radio frequency receiving module of the monitoring host, and the signal is subjected to frequency conversion processing by an intermediate frequency processing module so as to complete quick sensing and conversion of the electromagnetic spectrum monitoring signal;
and (3): and the display control terminal is operated to perform signal sorting, signal parameter measurement, signal comparison analysis and data recording and playback.
While the embodiments of the invention have been described in detail in connection with the drawings, the invention should not be construed as limited to the scope of the patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (8)
1. An electromagnetic spectrum monitoring device, characterized by: the system comprises a monitoring host, a monitoring antenna and an operation display control terminal;
the monitoring antenna is connected with the monitoring host, and the monitoring antenna receives signals by utilizing each section of antenna;
the monitoring host acquires signals received by the monitoring antenna, completes rapid sensing of frequency spectrum signals and provides power supply guarantee for the whole equipment;
the operation display control terminal is connected with the monitoring host to complete signal sorting, signal parameter measurement, signal comparison analysis and data recording and playback.
2. The electromagnetic spectrum monitoring device of claim 1, wherein: the electromagnetic spectrum monitoring equipment also comprises an equipment packing box.
3. The electromagnetic spectrum monitoring device of claim 1, wherein: the monitoring host comprises a radio frequency receiving module, an intermediate frequency processing module and a power supply module;
the radio frequency receiving module is used for acquiring a radio frequency signal of the monitoring antenna and realizing frequency spectrum monitoring; the intermediate frequency processing module is used for realizing interface communication, control and management of the radio frequency receiving module and the monitoring antenna;
the power supply module is used for providing power supply guarantee for the whole equipment.
4. An electromagnetic spectrum monitoring device as defined in claim 3, wherein: the radio frequency receiving module comprises a radio frequency receiving channel unit and a local oscillator unit;
the radio frequency receiving channel unit is used for carrying out analog domain processing of amplification, filtering and frequency mixing on an input radio frequency signal and converting the radio frequency signal into an intermediate frequency signal; and the local oscillator unit is used for realizing logic control on the radio frequency receiving channel unit.
5. An electromagnetic spectrum monitoring device as defined in claim 4, wherein: the radio frequency receiving channel unit comprises a radio frequency preselection module, a first intermediate frequency module, a second intermediate frequency module, a control module, a radio frequency power supply module and a frequency synthesizer module.
6. The electromagnetic spectrum monitoring device of claim 1, wherein: the monitoring antenna comprises a short wave antenna, an ultra-short wave antenna, a microwave antenna and a switch amplification assembly.
7. The electromagnetic spectrum monitoring device of claim 1, wherein: the operation display control terminal comprises a local display control terminal and a handheld display control terminal.
8. A control method of an electromagnetic spectrum monitoring device is characterized by comprising the following steps:
step (1): receiving an electromagnetic spectrum monitoring signal;
step (2): rapidly sensing and converting electromagnetic spectrum monitoring signals;
and (3): sorting the signals, measuring the parameters of the signals, comparing and analyzing the signals, and recording and playing back the data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211303357.8A CN115664558A (en) | 2022-10-24 | 2022-10-24 | Electromagnetic spectrum monitoring equipment and control method thereof |
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| CN202211303357.8A CN115664558A (en) | 2022-10-24 | 2022-10-24 | Electromagnetic spectrum monitoring equipment and control method thereof |
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| CN202211303357.8A Pending CN115664558A (en) | 2022-10-24 | 2022-10-24 | Electromagnetic spectrum monitoring equipment and control method thereof |
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