CN115296753A - Programmable customized broadband anti-interference automatic test system - Google Patents
Programmable customized broadband anti-interference automatic test system Download PDFInfo
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- CN115296753A CN115296753A CN202210891348.9A CN202210891348A CN115296753A CN 115296753 A CN115296753 A CN 115296753A CN 202210891348 A CN202210891348 A CN 202210891348A CN 115296753 A CN115296753 A CN 115296753A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000004891 communication Methods 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 11
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- 238000000034 method Methods 0.000 claims description 12
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- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 7
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Abstract
The invention discloses a programmable customized broadband anti-interference automatic test system, which comprises interference source generating and loading software, wherein the interference source generating and loading software runs on a signal source, generates frequency point, bandwidth, time, output signal power and interference pattern of an interference signal according to customization of a user, generates digital baseband data after corresponding interference signal normalization by combining the sampling frequency and the number of sampling points of the signal source, converts the digital baseband data into an interference signal source file and stores the interference signal source file in a specified folder; during testing, the corresponding file is read according to the control instruction and is input into the signal source through a standardized interface provided by the signal source, so that the signal source can output the corresponding interference signal. The invention can generate various interference signal source files with different styles according to the test requirements of different communication equipment in advance, load the interference signal source files into a signal source according to the requirements to generate different interference signals, and realize the switching of configurations such as different interference scenes, interference intensity, interference frequency points and the like by loading different interference signal source files, thereby greatly reducing the test time.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to wireless communication equipment of an aerospace vehicle, and discloses a programmable customized broadband anti-interference automatic test system.
Background
The anti-interference test is one of important test items for evaluating the anti-electromagnetic interference capability of the communication system. The interference existing in the electromagnetic environment is mainly divided into man-made interference and noise interference, wherein the noise interference is mainly a broadband white gaussian noise signal in the natural environment, and such noise sources are easily simulated and generated. The man-made interference is generally used in the field of electronic countermeasure, radio communication signals of an enemy are intercepted by the investigation equipment, after the signals are analyzed, identified and positioned to obtain parameters of the enemy, an interference machine is used for interfering part or the whole communication frequency band of the enemy signals, and the enemy cannot normally complete information interaction. The jamming is generally a suppressed jamming, which can be classified into single tone/multi-tone, frequency sweep, blocking, tracking, etc. according to the form of the jamming signal, and the common forms of jamming signals are shown in fig. 1 and 2. When the anti-interference performance is tested, a signal source is usually adopted to generate an interference source signal, and due to the diversity of the form of the man-made interference signal, when the form of the interference signal is switched, a tester is generally required to reset configuration parameters of the signal source, so that a new interference signal is generated; meanwhile, when the communication signal to be detected is a broadband frequency hopping signal, the bandwidth, time or interference frequency point of the interference signal output by the signal source needs to be continuously adjusted. How to reduce the operation steps of adjusting the output of the interference signal by a tester and shorten the testing time is a key problem to be solved for realizing the automatic testing of the communication anti-interference performance.
Disclosure of Invention
The invention aims to provide a programmable customized broadband anti-interference automatic test system, which is used for solving the problems of single anti-interference performance test method and weak customizability in wireless communication and can customize broadband interference source files of multiple types and multiple frequency bands according to different anti-interference test requirements; during testing, the interference source file can be automatically selected through programming to generate a required interference signal.
The invention aims to be realized by the following technical scheme:
a programmable customized broadband anti-interference automatic test system comprises interference source generation and loading software;
the method comprises the steps that interference source generating and loading software runs on a signal source, generates frequency points, bandwidth, time, output signal power and interference patterns of interference signals according to customization of a user, generates digital baseband data after corresponding interference signals are normalized by combining the sampling frequency and the number of sampling points of the signal source, converts the digital baseband data into files of the interference signal source, and stores the files in a designated folder; during testing, the corresponding file is read according to the control instruction and is input into the signal source through a standardized interface provided by the signal source, so that the signal source can output the corresponding interference signal.
Furthermore, the system also comprises anti-interference automatic test software;
the anti-interference automatic test software runs on a computer, generates a control instruction according to an anti-interference test item compiled by a user, outputs the control instruction to interference source generation and loading software through a computer network port during testing, and tests the anti-interference performance of the communication equipment to be tested; the control instruction comprises a path of an interference signal source file required to be used by an anti-interference test item, a signal source output coupling mode, a signal source output channel selection and a signal source output level gain selection.
Further, the working flow of the anti-interference automatic test software is as follows:
1) Configuring required test items and generating control instructions;
2) Entering an automatic test flow;
3) Automatically initializing equipment to be tested of all instruments;
4) Automatically controlling a power meter to calibrate the output signal power of the communication equipment to be tested;
5) Automatically outputting a control instruction through the network port to enable the signal source to load a corresponding interference signal source file;
6) Automatically controlling a power meter to calibrate the power of the interference signal output by the signal source;
7) And testing the anti-interference performance of the communication equipment to be tested.
The invention has the beneficial effects that:
1. the invention designs the interference source generating and loading software, can generate various interference signal source files with different styles according to the test requirements of different communication equipment in advance, and loads the interference signal source files into the signal source according to the requirements to generate different interference signals. By loading different interference signal source files, switching of configurations such as different interference scenes, interference intensity, interference frequency points and the like is achieved, and in the process, testers do not need to manually configure various setting parameters of the signal sources, so that the test time can be greatly reduced.
2. According to the invention, through anti-interference automatic test software, different interference signal source files can be selected by signal source equipment controlled by a computer network interface according to different anti-interference test items, so that the corresponding interference signals are automatically output, the automatic test of anti-interference performance is realized, the operation steps of testers are reduced, and the test efficiency is improved.
Drawings
Fig. 1 is a diagram of a single tone interference power spectrum.
Fig. 2 is a schematic diagram of a partial band blocking interference power spectrum.
Fig. 3 is a flow chart of interference signal generation.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 3, the programmable customized broadband automatic anti-interference test system of the present embodiment mainly includes: anti-interference automatic test software and interference source generation and loading software.
The interference source generating and loading software runs on a signal source, generates information such as frequency point, bandwidth (frequency domain blocking/tracking interference), time (time domain blocking/tracking interference), output signal power and interference pattern of an interference signal according to customization of a user, generates digital baseband data after corresponding interference signal normalization by combining parameters such as sampling frequency and sampling point number of the signal source, converts the digital baseband data into an interference signal source file, and stores the interference signal source file in a specified folder. During testing, the corresponding file is read according to the control instruction and is input into the signal source through a standardized interface provided by the signal source, so that the signal source can output a corresponding interference signal.
By way of illustration, the generation flow of the interference signal source file is as follows:
1. setting the sampling clock frequency of the signal source, inputting a specific clock frequency value such as 1000000 in Hz unit, or adopting scientific counting method 1.0e +6;
2. the sampling point number of the signal source is set, and the numerical value of 100 can be manually input or automatically selected;
3. setting the initial frequency of the required interference signal, inputting a specific frequency value such as 1000 in Hz unit, or adopting scientific counting method 1.0e +3;
4. setting the termination frequency of the required interference signal, inputting a specific frequency value in Hz unit, such as 2000, or adopting a scientific counting method of 2.0e +3;
5. selecting a notching option if comb-shaped blocking interference needs to be generated;
6. setting the center frequency of an interference signal notch, inputting a specific frequency value such as 1100 by taking Hz as a unit, or inputting the center frequencies of a plurality of notches by adopting a scientific counting method 1.1e +3 so as to separate the notches;
7. setting the bandwidth of the notch of the interference signal, inputting a specific frequency value such as 100 in Hz unit, or adopting scientific counting method 1.0e +2;
8. setting the depth of an interference signal notch, and inputting a specific power value in dB, such as-100;
9. clicking 'save waveform' to generate signal IQ data represented by binary, and storing bin suffix of interference signal source file according to standard binary file in a designated folder.
The loading flow of the interference signal source file is as follows:
1. selecting a corresponding interference signal source file according to the file path;
2. setting a signal source sampling frequency, inputting a specific clock frequency value such as 1000000 in Hz unit, or adopting a scientific counting method of 1.0e +6;
3. clicking to download, and loading an interference signal source file to a signal source through a pre-configured standard interface;
4. the steps can be completed by manual operation or by remote control of anti-interference automatic test software.
The anti-interference automatic test software runs on a computer and generates a control instruction according to anti-interference test items (frequency domain blockage, time domain blockage and the like) selected by a user. During testing, the control instruction is output to the interference source generation and loading software through a computer network port, and anti-interference performance of the communication equipment to be tested is tested. The control instruction comprises a path of an interference signal source file required to be used by an anti-interference test item, a signal source output coupling mode, a signal source output channel selection and a signal source output level gain selection.
The working process of the anti-interference automatic testing software is as follows:
1. compiling required test items, such as a narrow-band interference test, a wide-band interference test, a frequency domain blocking interference test and a time domain blocking interference test, wherein the test items can be expanded according to requirements subsequently, and only an interference signal source file directory corresponding to the test items needs to be compiled in advance; generating a control instruction;
2. clicking to start testing and entering an automatic testing process;
3. automatically initializing equipment to be tested of all instruments by software;
4. the software automatically controls the power meter to calibrate the output signal power of the communication equipment to be tested;
5. the software automatically outputs a control instruction through the network port to enable the signal source to load a corresponding interference signal source file;
6. the software automatically controls the power meter to calibrate the signal source to output the interference signal power;
7. and the software tests the anti-interference performance of the communication equipment to be tested.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (3)
1. A programmable customized broadband anti-interference automatic test system is characterized by comprising interference source generation and loading software;
the method comprises the steps that interference source generating and loading software runs on a signal source, frequency points, bandwidth, time, output signal power and interference patterns of interference signals are generated according to customization of a user, digital baseband data after normalization of the corresponding interference signals are generated by combining sampling frequency and sampling points of the signal source, and are converted into interference signal source files and stored in a designated folder; during testing, the corresponding file is read according to the control instruction and is input into the signal source through a standardized interface provided by the signal source, so that the signal source can output a corresponding interference signal.
2. The programmable customized broadband anti-interference automatic test system according to claim 1, further comprising anti-interference automatic test software;
the anti-interference automatic test software runs on a computer, generates a control instruction according to an anti-interference test item compiled by a user, outputs the control instruction to the interference source generation and loading software through a computer network port during testing, and tests the anti-interference performance of the communication equipment to be tested; the control instruction comprises a path of an interference signal source file required to be used by an anti-interference test item, a signal source output coupling mode, a signal source output channel selection and a signal source output level gain selection.
3. The programmable customized broadband automatic anti-interference test system according to claim 1, wherein the anti-interference automatic test software has the following working flow:
1) Configuring required test items and generating control instructions;
2) Entering an automatic test flow;
3) Automatically initializing equipment to be tested of all instruments;
4) Automatically controlling a power meter to calibrate the output signal power of the communication equipment to be tested;
5) Automatically outputting a control instruction through the network port to enable the signal source to load a corresponding interference signal source file;
6) Automatically controlling a power meter to calibrate the power of the interference signal output by the signal source;
7) And testing the anti-interference performance of the communication equipment to be tested.
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| CN116599537A (en) * | 2023-05-18 | 2023-08-15 | 哈尔滨市科佳通用机电股份有限公司 | Unit test method of railway frequency shift signal decoding algorithm |
| CN117784678A (en) * | 2023-12-22 | 2024-03-29 | 上海剑桥科技股份有限公司 | Control method, equipment and computer readable medium of anti-interference detector |
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