Array signal anti-interference simulation test system and method

Abstract

The invention discloses an anti-interference simulation test system for array signals. The system comprises a signal source, an interference source, a multi-path power divider, a combiner and a phase shifter, the signal source and the interference source are program-controlled signal sources, EIRP, emission waveform and emission bandwidth of emission signals are automatically controlled, useful signals emitted by the signal source and interference signals emitted by the interference source enter respective phase shifters through multi-path power dividers respectively, space information of the useful signals and the interference signals is converted into time information through the phase shifters, and the time information is transmitted to the signal source and the interference source. Useful signals and interference signals of each branch are respectively combined by the combiner and enter the anti-interference communication terminal, and the anti-interference communication terminal carries out anti-interference digital signal processing after filtering and amplification processing. According to the invention, the limitation of a microwave darkroom is eliminated, the full-automatic test can be carried out on the anti-interference communication terminal, and the tedious operation of manual intervention is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of array signal processing, relates to array signal anti-interference technology, and specifically relates to an array signal anti-interference simulation test system and method. Background Art

[0002] In the field of modern communication information processing technology, array signal processing plays an irreplaceable role. The received signal of the antenna array contains position information, which is converted into time information after entering the terminal, which can greatly improve the anti-interference ability of the receiver. With the vigorous development of modern communication information processing technology and anti-interference technology, various types of anti-interference communication terminals continue to emerge. In the process of developing anti-interference communication terminals, it is necessary to design anti-interference performance test methods based on their anti-interference technical characteristics, and test and evaluate the anti-interference performance of the terminal. Therefore, anti-interference testing has become an important part of research.

[0003] Usually, the anti-interference test of the anti-interference communication terminal is carried out in a darkroom, which requires the construction of equipment such as signal source, interference source and receiving device. The test method adopted is relatively simple, generally adopting a single one-way signal output and one-way signal receiving mode. The interference signal adopts a static interference method, and the direction and output EIRP of the interference signal can only be adjusted manually, resulting in insufficient coverage of the interference test, especially when adjusting the interference direction, it is necessary to re-deploy the interference source device, so it is difficult to achieve automated testing. Summary of the invention

[0004] (I) Purpose of the invention

[0005] The purpose of the present invention is to provide a simulation test system and method for array signal anti-interference, which builds a simulation test system for array signal anti-interference by analog devices such as power dividers, combiners and phase shifters, and gets rid of the physical environment limitations of microwave darkroom anti-interference testing, so as to test the anti-interference ability of anti-interference communication terminals of different application types.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention provides an array signal anti-interference simulation test system, which includes: a signal source, an interference source, a multi-channel power splitter, a combiner, and a phase shifter; the signal source and the interference source use a programmable signal source to automatically control the EIRP, the transmission waveform and the transmission bandwidth of the transmission signal, the useful signal transmitted by the signal source and the interference signal transmitted by the interference source respectively enter the respective phase shifters through the multi-channel power splitter, the spatial information of the useful signal and the interference signal is converted into time information through the phase shifter, the useful signal and the interference signal of each branch are respectively combined by the combiner to enter the anti-interference communication terminal, and the anti-interference communication terminal performs anti-interference digital signal processing after filtering and amplification processing.

[0008] It also includes a control computing device for controlling the EIRP, transmission waveform and transmission bandwidth of signals generated by signal sources and interference sources, controlling the phase shift of phase shifters, and receiving anti-interference digital signal processing results.

[0009] Among them, there is one signal source, one interference source, two four-way power dividers are selected as the multi-way power divider, there are four combiners, and there are eight phase shifters.

[0010] Among them, the signal source and the interference source are each connected to a four-way power divider, and the four useful signals and four interference signals are divided into four groups, each group includes one useful signal and one interference signal. After the eight signals are phase-shifted by eight phase shifters, the two signals of each group are combined by a combiner and then transmitted to the anti-interference communication terminal.

[0011] Among them, the anti-interference communication terminal is provided with processing channels having the same number as the combiner, and each signal is filtered and amplified respectively.

[0012] The present invention also provides an array signal anti-interference simulation test method, comprising the following steps:

[0013] S1: The control computing device generates control parameters according to the interference-signal ratio of the test system to ensure that the transmitted RF signals of the signal source and the interference source meet the test requirements;

[0014] S2: Control the computing device to generate the phase shift coefficient of the phase shifter according to the wave directions of the useful signal and the interference, simulating the spatial information tested in the dark room;

[0015] S3: The control computing device controls the signal transmitter and the anti-interference communication terminal to start up for testing. The anti-interference communication terminal receives four-channel RF signals and performs anti-interference digital signal processing, and the processing results are transmitted back to the control computing device.

[0016] In step S1, the control parameters include EIRP, transmit waveform and transmit bandwidth.

[0017] In step S3, the control computing device evaluates and analyzes the anti-interference test results, determines the anti-interference performance of the anti-interference communication terminal, and generates a test report.

[0018] (III) Beneficial effects

[0019] The array signal anti-interference simulation test system and method provided by the above technical solution get rid of the limitation of microwave darkroom, can perform fully automatic testing on anti-interference communication terminals, and avoids the tedious operation of manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the composition of the simulation test system for array signal anti-interference.

[0021] Figure 2 This is the workflow of the simulation test system for array signal anti-interference. DETAILED DESCRIPTION

[0022] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0023] This embodiment takes an array signal anti-interference test system with one signal source and one interference source as an example, and without loss of generality, the number of array elements of the communication terminal is set to 4.

[0024] like Figure 1 As shown, the simulation test system for array signal anti-interference in this embodiment includes a signal source, an interference source, a multi-channel power splitter, a combiner, and a phase shifter; the signal source and the interference source use a programmable signal source to automatically control the EIRP, the transmission waveform, and the transmission bandwidth of the transmission signal. The useful signal transmitted by the signal source and the interference signal transmitted by the interference source enter their respective phase shifters through the multi-channel power splitter respectively, and the spatial information of the useful signal and the interference signal is converted into time information through the phase shifter. The useful signal and the interference signal of each branch are respectively combined by the combiner to enter the anti-interference communication terminal, and the anti-interference communication terminal performs anti-interference digital signal processing after filtering and amplification processing.

[0025] The simulation test system also includes a control computing device for controlling the EIRP, transmission waveform and transmission bandwidth of signals generated by the signal source and the interference source, controlling the phase shift of the phase shifter, and receiving the anti-interference digital signal processing result.

[0026] In this embodiment, there is one signal source and one interference source. The multi-channel power splitter uses two four-channel power splitters, there are four combiners, and there are eight phase shifters. The signal source and the interference source are each connected to a corresponding four-channel power splitter. The four channels of useful signals and the four channels of interference signals are divided into four groups, each group includes one useful signal and one interference signal. After the eight channels of signals are phase-shifted by eight phase shifters, the two channels of signals in each group are combined by a combiner and then transmitted to the anti-interference communication terminal.

[0027] The anti-interference communication terminal is provided with processing channels having the same number as the combiners, and each signal is filtered and amplified respectively.

[0028] Based on the above simulation test system, refer to Figure 2 As shown, the simulation test method for array signal anti-interference in this embodiment includes the following steps:

[0029] S1: The control computing device generates control parameters according to the interference-signal ratio of the test system to ensure that the transmitted RF signals of the signal source and the interference source meet the test requirements.

[0030] Control parameters include EIRP, transmit waveform and transmit bandwidth.

[0031] S2: The control computing device generates a phase shift coefficient of the phase shifter according to the wave directions of the useful signal and the interference, simulating the spatial information tested in the darkroom.

[0032] S3: The control computing device controls the signal transmitter and the anti-interference communication terminal to start the test. The anti-interference communication terminal receives four-channel RF signals and performs anti-interference digital signal processing. The processing results are transmitted back to the control computing device. The control computing device evaluates and analyzes the anti-interference test results, determines the anti-interference performance of the anti-interference communication terminal, and generates a test report.

[0033] The test system and test method of this embodiment get rid of the limitation of microwave darkroom, can perform fully automated test on anti-interference communication terminals, and avoid the tedious operation of manual intervention.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An array signal anti-interference simulation test system, characterized in that: include: Signal source, interference source, multi-channel power splitter, combiner, phase shifter; The signal source and interference source use programmable signal sources to automatically control the EIRP, transmission waveform and transmission bandwidth of the transmitted signal. The useful signal transmitted by the signal source and the interference signal transmitted by the interference source enter their respective phase shifters through multi-way power splitters respectively. The spatial information of the useful signal and the interference signal is converted into time information through the phase shifter. The useful signal and interference signal of each branch are combined by the combiner and enter the anti-interference communication terminal respectively. After filtering and amplification processing, the anti-interference communication terminal performs anti-interference digital signal processing.

2. The array signal anti-interference simulation test system according to claim 1, characterized in that: It also includes a control computing device for controlling the EIRP, transmission waveform and transmission bandwidth of signals generated by signal sources and interference sources, controlling the phase shift of the phase shifter, and receiving anti-interference digital signal processing results.

3. The array signal anti-interference simulation test system as claimed in claim 2, characterized in that: There is one signal source, one interference source, two four-way power splitters are used as the multi-way power splitter, there are four combiners, and eight phase shifters.

4. The array signal anti-interference simulation test system as claimed in claim 3, characterized in that: The signal source and the interference source are each connected to a four-way power divider, and the four useful signals and four interference signals are divided into four groups, each group includes one useful signal and one interference signal. After the eight signals are phase-shifted by eight phase shifters, the two signals in each group are combined by a combiner and then transmitted to the anti-interference communication terminal.

5. The array signal anti-interference simulation test system as claimed in claim 4, characterized in that: The anti-interference communication terminal is provided with processing channels having the same number as the combiners, and each signal is filtered and amplified respectively.

6. A simulation test method for array signal anti-interference based on the simulation test system of claim 5, characterized in that: The following steps are involved: S1: The control computing device generates control parameters according to the interference-signal ratio of the test system to ensure that the transmitted RF signals of the signal source and the interference source meet the test requirements; S2: Control the computing device to generate the phase shift coefficient of the phase shifter according to the wave directions of the useful signal and the interference, simulating the spatial information tested in the dark room; S3: The control computing device controls the signal transmitter and the anti-interference communication terminal to start up for testing. The anti-interference communication terminal receives four-channel RF signals and performs anti-interference digital signal processing, and the processing results are transmitted back to the control computing device.

7. The array signal anti-interference simulation test method according to claim 6, characterized in that: In step S1, the control parameters include EIRP, transmit waveform and transmit bandwidth.

8. The array signal anti-interference simulation test method according to claim 7, characterized in that: In step S3, the control computing device evaluates and analyzes the anti-interference test results, determines the anti-interference performance of the anti-interference communication terminal, and generates a test report.

9. Application of an array signal anti-interference simulation test system based on any one of claims 1 to 5 in the field of array signal processing technology.

10. Application of an array signal anti-interference simulation test method according to any one of claims 6 to 8 in the field of array signal processing technology.

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