CN111510228B - Automatic calibration device and method for millimeter wave satellite communication detection assembly - Google Patents
Automatic calibration device and method for millimeter wave satellite communication detection assembly Download PDFInfo
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- CN111510228B CN111510228B CN202010286560.3A CN202010286560A CN111510228B CN 111510228 B CN111510228 B CN 111510228B CN 202010286560 A CN202010286560 A CN 202010286560A CN 111510228 B CN111510228 B CN 111510228B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/104—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof of other parameters, e.g. DC offset, delay or propagation times
Abstract
The invention provides an automatic calibration device of a wave building component in millimeter wave satellite communication, which comprises a signal source, a computer, a radio frequency detection component and a signal processing component, wherein the signal source is connected with the radio frequency detection component, the signal source is connected with the computer, the radio frequency detection component is connected with the signal source and the computer, the computer writes a calibration program into the radio frequency detection component, the radio frequency detection component detects an analog sampling detection signal, the signal processing component is connected with the radio frequency detection component, and the signal processing component outputs a detection result of the radio frequency detection component. The invention also provides an automatic calibration method. The invention improves the detection precision of the radio frequency detection assembly, reduces the workload of the production line and can greatly improve the production efficiency of the detection module.
Description
Technical Field
The invention relates to the field of satellite communication, in particular to an automatic calibration device and a calibration method for a wave building component in millimeter wave satellite communication.
Background
In the millimeter wave satellite communication field, the importance of the output power of the transmission link to the linearity of the system link, the communication quality and the transmission distance is undoubted, and when the transmission power is too high, the linearity of the system becomes poor, and when the system is serious, the receiving end cannot demodulate correctly, and when the power is too low, the transmission distance is shortened, the signal-to-noise ratio of the receiving end is too low, and the like. In order to accurately indicate transmitting power, a system needs a high-precision millimeter wave detection assembly with excellent performance, and due to the characteristics of high millimeter wave frequency, short wavelength and the like, the detection assembly is similar to other millimeter wave radio frequency assemblies, so that the problems of device performance discreteness, production assembly discreteness, high requirements on the processing precision of a structural component printed board and the like exist.
Fig. 1 shows a prior art rf detection assembly and method, in which a directional coupler receives a high-power signal transmitted from a source, the directional coupler transmits the signal to an antenna for transmission, and the directional coupler samples the signal to obtain a sampled signal and transmits the sampled signal to the rf detection assembly, and the rf detection assembly generates a detection analog voltage or a digital signal and transmits the detection analog voltage or the digital signal to a signal processing portion for processing.
The transfer function of the conventional detector chip commonly used in the radio frequency detection assembly is mostly linear V/V, that is, the detection power and the output voltage basically conform to an exponential relationship, as shown in fig. 2, so that the conventional detection assembly has two methods for calculating the output power:
1. fitting formula method: the method has the advantages that a formula is given by using a device manual or a power and voltage corresponding formula is concluded according to actual engineering data, and the current output power is calculated by a post-production information processing part according to the formula, so that the method has the defects of high requirements on device consistency and assembly process consistency and difficulty in realization in a millimeter wave band, and the detection errors of other components are large after the method is actually produced;
2. table look-up method: the detection power-output voltage corresponding table (namely calibration work) of each detection component after assembly is measured, the smaller the measurement step is, the higher the precision is, the measurement step of 0.5dBm is generally taken in engineering, and then an information processing part adopts a table look-up method to calculate the current output power.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the automatic calibration device and the calibration method of the detection assembly in millimeter wave satellite communication, which can improve the detection precision of the radio frequency detection assembly, reduce the workload of a production line, greatly improve the production efficiency of the detection module, reduce the cost, adapt to mass production and greatly improve the output power detection precision of a millimeter wave satellite communication emission system.
According to a first aspect of the present invention, an automatic calibration apparatus for millimeter wave satellite communication detector assembly is provided, comprising a signal source, a computer, a radio frequency detector assembly and a signal processing assembly,
the signal source is connected with the radio frequency detection assembly and used for sending an analog sampling detection signal to the radio frequency detection assembly, and the signal source is connected with the computer and used for receiving a control instruction of the computer so as to output a power signal;
the radio frequency detection assembly is connected with the signal source and used for receiving an analog sampling detection signal sent by the signal source, the radio frequency detection assembly is connected with the computer and used for converting and outputting the signal to the computer after receiving the analog sampling detection signal, the computer writes a calibration program into the radio frequency detection assembly, and the radio frequency detection assembly detects the analog sampling detection signal;
the signal processing assembly is connected with the radio frequency detection assembly, and the signal processing assembly outputs the detection result of the radio frequency detection assembly.
In one aspect, the radio frequency detection assembly comprises a detection chip, a CNA port chip and a single chip microcomputer;
the detection chip is respectively connected with the CNA port chip and the single chip microcomputer, and is also connected with the signal source to receive an analog sampling detection signal from the signal source;
the CNA port chip is connected with the computer to realize signal transmission;
the single chip microcomputer is connected with the computer to receive the calibration program sent by the computer, and is also connected with the signal processing assembly to output the detection result to the signal processing assembly.
In one aspect, the detection chip identifies the magnitude of the analog sampling detection signal, the analog sampling detection signal is transmitted to the CNA port chip for signal conversion, the converted signal is input to the computer through the CNA port chip, and the computer receives the converted signal and then writes a calibration program into the single chip microcomputer.
In one aspect, the single chip microcomputer calibrates the analog sampling detection signal according to the calibration program to obtain a standard voltage value and stores the standard voltage value, meanwhile, the computer sends the radio frequency power of the current signal to the single chip microcomputer, and the single chip microcomputer records a power-voltage correspondence table according to the radio frequency power.
In a second aspect of the present invention, an automatic calibration method for an automatic calibration apparatus of a millimeter wave satellite communication detection assembly is provided, the method is characterized by comprising the following steps:
s1, the signal source outputs a power signal according to the control instruction of the computer;
s2, the signal source generates an analog sampling signal and sends the analog sampling signal to the radio frequency detection assembly;
s3, writing a calibration program into the radio frequency detection assembly by the computer;
s4, the radio frequency detection assembly calibrates the analog sampling signal to obtain a standard voltage value;
s5, the computer sends the radio frequency signal power to the radio frequency detection assembly;
and S6, the radio frequency detection component records a power-voltage corresponding table according to the radio frequency signal power and the standard voltage value.
The invention realizes the automation of calibration work by adopting two parts of software codes, improves the production efficiency, can greatly improve the precision of the detection assembly by reducing the step of a calibration table, ensures that the production efficiency of the millimeter wave detection assembly is high, the index is good, uses a program automation method, reduces the index discreteness of the millimeter wave assembly caused by assembly and device discreteness, reduces the time of manual standardized data acquisition, improves the data acquisition precision, has an injection signal of-15 dBm, and adopts the output signal of an automatic detection module to be closer to the value of the injection signal.
Drawings
In order to more clearly illustrate the technical solutions of the present invention and the prior art, the drawings needed to be used are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a prior art detector assembly configuration;
FIG. 2 is a graph of power versus output voltage for a prior art system;
FIG. 3 is a schematic view of an automatic calibration device according to the present invention;
FIG. 4 is a schematic diagram of an RF detection assembly according to the present invention;
FIG. 5 is a flow chart of an automatic calibration method of the present invention;
fig. 6 is a comparison of data from manual calibration versus automatic calibration.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In one embodiment of the invention, fig. 3 shows an automatic calibration device for a millimeter wave satellite communication detector assembly, which comprises a signal source, a computer, a radio frequency detector assembly and a signal processing assembly. The signal source is connected with the radio frequency detection assembly and used for sending an analog sampling detection signal to the radio frequency detection assembly, and the signal source is connected with the computer and used for receiving a control instruction of the computer so as to output a power signal; the radio frequency detection assembly is connected with the signal source and used for receiving an analog sampling detection signal sent by the signal source, the radio frequency detection assembly is connected with the computer and used for converting and outputting the signal to the computer after receiving the analog sampling detection signal, the computer writes a calibration program into the radio frequency detection assembly, and the radio frequency detection assembly detects the analog sampling detection signal; the signal processing assembly is connected with the radio frequency detection assembly, and the signal processing assembly outputs the detection result of the radio frequency detection assembly.
In this embodiment, the signal source is a measured instrument, and is used to input a signal to the rf detection assembly, and the measured signal source can ensure the accuracy of the input signal. And the signal processing module sends the signal to the signal section of the transmitter when no problem is detected in the signal via the detection module. The computer controls the signal source to emit power signals, the signal source carries out analog sampling on the power signals and outputs analog sampling detection signals to the radio frequency detection assembly, and the radio frequency detection assembly carries out detection and calibration on the detection signals to finish an automatic calibration process. Compared with the traditional manual calibration, the method has the advantages that the index discreteness caused by assembly and device discreteness of the millimeter wave assembly is reduced by using a program automation method, the time for manually standardizing data acquisition is shortened, and the data acquisition precision is improved.
In one embodiment, as shown in fig. 4, the radio frequency detection assembly of the present invention includes a detection chip, a CNA port chip, and a single chip. The detection chip is respectively connected with the CNA port chip and the single chip microcomputer, and is also connected with the signal source to receive an analog sampling detection signal from the signal source; the CNA port chip is connected with the computer to realize signal transmission; the single chip microcomputer is connected with the computer to receive the calibration program sent by the computer, and is also connected with the signal processing assembly to output the detection result to the signal processing assembly.
In the embodiment, the automation of calibration is realized through the radio frequency detection assembly, and the calibration is mainly completed through an automatic calibration program, so that the single chip microcomputer, the detection chip and the CNA port chip are arranged. In the specific processing process, when a signal source receives an instruction sent by a computer and outputs a power signal, a detection chip receives an analog sampling detection signal from the signal source and informs the computer through a CNA port chip, after the computer knows, an automatic calibration program is written into a single chip microcomputer of a radio frequency detection assembly, the detection chip sends the analog sampling detection signal to the single chip microcomputer, the single chip microcomputer carries out detection calibration on the power signal, and when the calibrated signal value is free of problems, the signal is directly sent to a signal part of a transmitter through a signal processing assembly to be transmitted. By the aid of the mode, automation of calibration work is realized, production efficiency is improved, stepping of the calibration meter can be reduced, and precision of the detection assembly is greatly improved, so that production efficiency of the millimeter wave detection assembly is high, and indexes are good.
In one embodiment of the present invention, the detection chip identifies the magnitude of the analog sampling detection signal, transmits the analog sampling detection signal to the CNA port chip for signal conversion, the converted signal is input to the computer by the CNA port chip, and the computer writes a calibration program into the single chip microcomputer after receiving the converted signal. The single chip microcomputer calibrates the analog sampling detection signal according to the calibration program to obtain a standard voltage value and stores the standard voltage value, meanwhile, the computer sends the radio frequency power of the current signal to the single chip microcomputer, and the single chip microcomputer records a power-voltage corresponding table according to the radio frequency power. Thereby completing the automated calibration and generating a power-voltage correspondence table.
In another embodiment of the present invention, as shown in fig. 5, an automatic calibration method for an automatic calibration apparatus of a millimeter wave satellite communication detection assembly is provided, wherein the method comprises the following steps:
s1, the signal source outputs a power signal according to the control instruction of the computer;
s2, the signal source generates an analog sampling signal and sends the analog sampling signal to the radio frequency detection assembly;
s3, writing a calibration program into the radio frequency detection assembly by the computer;
s4, the radio frequency detection assembly calibrates the analog sampling signal to obtain a standard voltage value;
s5, the computer sends the radio frequency signal power to the radio frequency detection assembly;
and S6, the radio frequency detection component records a power-voltage corresponding table according to the radio frequency signal power and the standard voltage value.
In the method, the computer controls the signal source to emit power signals, the signal source performs analog sampling on the power signals, the computer writes a calibration program into a radio frequency detection assembly, the radio frequency detection assembly performs detection and calibration on analog sampling detection signals to obtain a standard voltage value, meanwhile, the computer sends the power of the signals emitted by the signal source to the radio frequency detection assembly, and after the radio frequency detection assembly receives the power, a power-voltage correspondence table is generated according to the power of the radio frequency signals and the standard voltage value obtained by the calibration in the front, so that the automatic calibration process is completed.
As shown in fig. 6, comparing the data of the manual calibration and the automatic calibration, it can be seen that the output signal of the automatic detection module is closer to the value of the injection signal (usually, the injection signal is-15 dBm), the deviation of the value of the manually collected data is larger compared with the value of the injection signal, and meanwhile, the time for manually standardizing data collection is reduced and the data collection precision is improved by the automatic detection, and the manually collected data is very time-consuming.
The above is a detailed description of the technical solution proposed by the present invention. In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The foregoing examples merely illustrate several embodiments of the present invention, and the principles and embodiments of the present invention are described herein, and the above description is only for the purpose of facilitating understanding the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (3)
1. The utility model provides an automatic calibration device of millimeter wave satellite communication detection subassembly, includes signal source, computer, radio frequency detection subassembly and signal processing subassembly, its characterized in that:
the signal source is connected with the radio frequency detection assembly and used for sending an analog sampling detection signal to the radio frequency detection assembly, and the signal source is connected with the computer and used for receiving a control instruction of the computer so as to output a power signal;
the radio frequency detection assembly is connected with the signal source and used for receiving an analog sampling detection signal sent by the signal source, the radio frequency detection assembly is connected with the computer and used for converting and outputting the signal to the computer after receiving the analog sampling detection signal, the computer writes a calibration program into the radio frequency detection assembly, and the radio frequency detection assembly detects the analog sampling detection signal;
the signal processing assembly is connected with the radio frequency detection assembly and outputs the detection result of the radio frequency detection assembly;
the radio frequency detection component comprises a detection chip, a CNA port chip and a single chip microcomputer;
the detection chip is respectively connected with the CNA port chip and the single chip microcomputer, and is also connected with the signal source to receive an analog sampling detection signal from the signal source;
the CNA port chip is connected with the computer to realize signal transmission;
the single chip microcomputer is connected with the computer to receive the calibration program sent by the computer, and is also connected with the signal processing assembly to output the detection result to the signal processing assembly;
the detection chip identifies the size of the analog sampling detection signal, the analog sampling detection signal is transmitted to the CNA port chip for signal conversion, the converted signal is input to the computer through the CNA port chip, and the computer writes a calibration program into the singlechip after receiving the converted signal.
2. The automatic calibration device of the millimeter wave satellite communication detection assembly according to claim 1, wherein the single chip microcomputer calibrates the analog sampling detection signal according to the calibration program to obtain a standard voltage value and stores the standard voltage value, the computer sends the radio frequency power of the current signal to the single chip microcomputer, and the single chip microcomputer records the power-voltage correspondence table according to the radio frequency power.
3. A method of automatic calibration of an automatic calibration device for a millimeter wave satellite communication wave detection assembly according to any of claims 1-2, the method comprising the steps of:
s1, the signal source outputs a power signal according to the control instruction of the computer;
s2, the signal source generates an analog sampling signal and sends the analog sampling signal to the radio frequency detection assembly;
s3, writing a calibration program into the radio frequency detection assembly by the computer;
s4, the radio frequency detection assembly calibrates the analog sampling signal to obtain a standard voltage value;
s5, the computer sends the radio frequency signal power to the radio frequency detection assembly;
and S6, the radio frequency detection component records a power-voltage corresponding table according to the radio frequency signal power and the standard voltage value.
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