A radar digital T / R module receive and parallel test apparatus

Abstract

The test time of single T / R component is close to several hours at present, the test workload of T / R component of whole radar is huge, and the production and research of digital phased array radar, especially batch production radar, is seriously restricted. In order to overcome the defects in the prior art, the present application provides a radar digital T / R component receiving parallel test device, which comprises a test host computer, a control simulation device, a task scheduling module, a 3-channel microwave signal source and a microwave adapter. The digital T / R component receiving multi-channel parallel test can be realized, multiple frames of T / R component state control tables can be stored, the T / R component receiving state multi-frequency point rapid test can be realized, the T / R component test data can be collected and processed in real time, the T / R component receiving test rapid closed loop can be realized, and the T / R component receiving test excitation signal can be input at the same time through the microwave adapter, so that the multi-channel parallel test can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of microwave test, and particularly relates to a radar digital T / R component receiving parallel test device. BACKGROUND

[0002] In recent years, the adaptive digital array radar with unit-level digitalization of receiving / transmitting beams has become an important development direction of the phased array radar. The digital phased array radar has advantages of large dynamic range, strong anti-interference capability, simultaneous multi-beam, simultaneous high data rate search, etc. The digital T / R component module is the core of the digital phased array radar, and has a complete transmitter and receiver link. The T / R component needs to be tested in detail before being assembled to the antenna array surface, so as to finally ensure the performance of the radar. The digital phased array radar includes hundreds or even tens of thousands of digital T / R components, each T / R component includes multiple channels, and each channel needs to test multiple performance parameters such as dynamic range, noise figure, receiving gain, receiving sensitivity, etc. at dozens or even hundreds of frequency points in a large frequency range.

[0003] Since the digital phased array radar has a certain bandwidth, the T / R component usually has multiple channels, and each channel needs to test dynamic range, noise figure, receiving gain, receiving sensitivity, etc. at dozens or even hundreds of frequency points in a large frequency range. The existing digital T / R component test system realizes basic automatic test by switching channels and test instruments through a microwave switch. The receiving test relies on the data recording of the data acquisition module after the AD sampling of the T / R component, and the automatic test software controls the data acquisition module to calculate the related indexes offline. However, all of them can only test a single frequency point and a single channel, and the longest test time of a single T / R component is close to several hours. The test workload of the T / R components of the entire radar is huge, which seriously restricts the production and development of the digital phased array radar, especially the batch production radar. SUMMARY

[0004] In order to overcome the deficiencies in the prior art, the present application provides a radar digital T / R component receiving parallel test device, which can realize digital T / R component receiving multi-channel parallel test. The innovation of the test device lies in that:

[0005] 1. Multiple T / R component state control tables can be stored to realize T / R component receiving state multi-frequency point fast test.

[0006] 2. The T / R component test data can be collected and processed in real time to realize T / R component receiving test fast closed loop.

[0007] 3. The microwave adapter is used to realize simultaneous input of the T / R component receiving test excitation signal, and realize multi-channel parallel test.

[0008] The architecture of the radar digital T / R component receiving parallel test device is as follows: Figure 1The test master computer, the control simulation device, the task scheduling module, the 3-channel microwave signal source and the microwave adapter are shown.

[0009] The test master computer runs the test software and provides a man-machine interactive interface. The user inputs test parameters on the interface and clicks a test item, and the test software starts to execute a test flow.

[0010] The task scheduling has a front insertion module and a rear insertion module, and the two modules communicate through ROCKET IO. The front insertion module stores and receives a plurality of frames of state control tables for parallel testing. The rear insertion module receives optical fiber data from a digital T / R assembly and processes the data for merging and sending to the front insertion module. After receiving the test data, the front insertion module analyzes and processes the data in real time under an embedded operating system and sends the data to the test software through a UDP network protocol.

[0011] The control simulation device serves as a control module of the digital T / R assembly and mainly receives state control tables and sends the tables to the digital T / R assembly through optical fiber together with generated optical timing to provide uplink control and timing of the assembly. In the digital T / R assembly receiving parallel testing architecture, the control simulation device generates a series of specific timing after being triggered by an instruction to realize rapid multi-frame testing of the digital T / R assembly: (1) a zero-clearing pulse sent to the rear insertion of the task scheduling module: after receiving the zero-clearing pulse of the control simulation device, the rear insertion of the task scheduling module resets a pointer of the plurality of frames of state control tables stored in the front insertion of the task scheduling module to the first state control table; (2) an interrupt pulse sent to the rear insertion of the task scheduling module: after receiving the interrupt pulse of the control simulation device, the front insertion of the task scheduling module sequentially sends a single frame of state control table to the control simulation device through a UDP network protocol; (3) frequency hopping 1 and frequency hopping 2 pulses sent to the 3-channel microwave signal source: the frequency hopping pulses follow the pulses of the task scheduling module and trigger the frequency source to realize frequency hopping of the local oscillator and the excitation channel of the digital T / R assembly; (4) a state control instruction package sent to an array: after receiving the state control table sent by the front insertion of the task scheduling module, the control simulation device packs the table with optical timing and sends the package to the digital T / R assembly to realize state control of the assembly; (5) TR1 and TR2 timing signals generated after other signals; and (6) after receiving the last frame of state control table stored by the front insertion of the task scheduling module, the control simulation device ends the whole test timing and waits for the next trigger instruction to start the next test.

[0012] 3 channel microwave signal source provides source signal for digital T / R component receiving parallel test: PORT1 excitation end signal is sent to digital T / R component to provide excitation source; PORT2 local oscillator signal is sent to digital T / R component to provide local oscillator; PORT3 clock signal is divided into digital T / R component and control simulation equipment as the clock reference of the whole system. The clock signal is an internal trigger point frequency mode, and the local oscillator signal and excitation signal channel are external trigger sweep frequency modes. Under the specific timing of the control simulation equipment, fast multi-frequency point test can be realized.

[0013] The microwave adapter mainly includes a microwave switch and a power divider, and provides switch switching and RF signal power division of the receiving parallel test architecture of the digital T / R component, so that the receiving excitation signal is realized while the input parallel test is completed. Figure 3 As shown, the 8-channel transceiver shared digital T / R component is connected to a one-to-two microwave switch, one road of the switch is connected to a one-to-eight microwave switch, and the other road is connected to a one-to-eight power divider. The one-to-eight microwave switch and the one-to-eight power divider are connected to a one-to-two switch, and the other end of the one-to-two switch is an excitation channel connected to PORT1 of the 3-channel microwave signal source. The excitation channel is sent to the eight channels of the digital T / R component through the one-to-eight power divider, and the excitation signal is provided. The eight receiving channels of the digital T / R component are independent of each other, and digital sampling is realized at the channel level, so that 8-channel receiving parallel test is realized.

[0014] The beneficial effects of the present application are

[0015] The radar digital T / R component receiving channel parallel test device provided by the present application can realize the specific timing of the digital T / R component test multi-frequency point fast test, realize the pipeline processing of test data, replace the data acquisition module, realize the simultaneous parallel test of various test parameters of the digital T / R component receiving channel, improve the test efficiency of the digital T / R component, and is suitable for digital T / R component test of various frequency bands. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a radar digital T / R component receiving parallel test device architecture diagram.

[0017] Figure 2 It is a microwave adapter principle block diagram.

[0018] Figure 3 It is a radar digital T / R component receiving parallel test timing diagram.

[0019] Figure 4 It is a radar digital T / R component receiving parallel test flowchart. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0021] Referring to Figures 1-4 The digital T / R assembly uses an 8-channel assembly, and the specific use process is as follows:

[0022] 1) Connect the test host computer, the control simulation device, the task scheduling module, the 3-channel microwave signal source, and the network of the microwave adapter to the network switch.

[0023] 2) Connect the PORT1 port of the 3-channel microwave signal source to the excitation port of the microwave adapter, the PORT2 port of the 3-channel microwave signal source to the local oscillator input port of the microwave adapter, and the PORT3 port of the 3-channel microwave signal source to a 1-to-2 power divider.

[0024] 3) Connect one end of the 1-to-2 power divider to the clock input port of the microwave adapter, and the other end to the clock interface of the control simulation device.

[0025] 4) Connect the local oscillator output and clock output ports of the microwave adapter to the local oscillator and clock ports of the T / R assembly, respectively.

[0026] 5) Connect the RF channel 1-8 interfaces of the microwave adapter to the 1-8 channels of the digital T / R assembly.

[0027] 6) Connect the source trigger port of the control simulation device to the external trigger port of the 3-channel microwave signal source.

[0028] 7) Connect the interface where the clear interrupt of the control simulation device is located to the corresponding interface of the task scheduling module.

[0029] 8) Connect the uplink optical fiber port of the control simulation device to the optical control port of the T / R assembly.

[0030] 9) Connect the downlink optical fiber port of the T / R assembly to the optical receiving port plugged after the task scheduling module.

[0031] Start the test program to start the T / R assembly receiving item automatic test, and the test process is as follows:

[0032] 1) Set the PORT1 port of the 3-channel microwave signal source as external trigger sweep.

[0033] 2) Set the PORT2 port of the 3-channel microwave signal source as external trigger sweep.

[0034] 3) Set 3-channel microwave signal source PORT3 port as internal trigger point frequency.

[0035] 4) Send multiple frequency point state control table to the front plug-in module of the task scheduling module.

[0036] 5) Microwave adapter sets the excitation signal as the power division path.

[0037] 6) Test host computer test software sends trigger instructions to the control simulation device.

[0038] 7) The control simulation device completes the multi-frequency point fast trigger according to the time sequence.

[0039] 8) The T / R assembly generates optical fiber data after receiving the state control table.

[0040] 9) The rear plug-in module of the task scheduling module processes the optical fiber data and sends it to the front plug-in module.

[0041] 10) The front plug-in module of the task scheduling module completes data processing and sends it to the test host computer.

[0042] 11) The test host computer test software completes the final data display and storage.

[0043] At this point, the T / R assembly receiving project automation test is completed.

[0044] The present application is not limited to the above specific embodiments, and various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made to the above embodiments in accordance with the technical essence of the present application shall be included in the protection scope of the present application.

Claims

1. A radar digital T / R module receive and parallel test apparatus, characterized by: The test host computer, the control simulation device, the task scheduling module, the 3-channel microwave signal source and the microwave adapter are included. The test host computer runs test software and provides a man-machine interactive interface. The task scheduling module includes a front insertion module and a rear insertion module, and the two modules communicate through ROCKET IO. The front insertion module stores and receives a plurality of frames of state control tables sent by the test host computer for parallel testing. The rear insertion module receives optical fiber data sent by the digital T / R component and sends the data to the front insertion module after merging and processing. The front insertion module sends the data to the test host computer after real-time analysis and processing. The control simulation device, as a control module of the digital T / R component, receives the state control table sent by the task scheduling module and sends the optical timing to the digital T / R component through optical fiber packaging. The 3-channel microwave signal source provides source signals received by the digital T / R component for parallel testing. The microwave adapter includes a microwave switch and a power divider, which provides switch switching and RF signal power division for the digital T / R component for parallel testing.

2. A radar digital T / R module receive and parallel test apparatus as claimed in claim 1, characterized in that: The control simulation device generates a specific timing after being triggered by an instruction, and realizes rapid multi-frame testing of the digital T / R component, including: (1) sending a clear pulse to the rear insertion module of the task scheduling module; (2) sending an interrupt pulse to the rear insertion module of the task scheduling module; (3) sending a frequency hopping pulse to the 3-channel microwave signal source to realize frequency hopping of the local oscillator and the excitation of the digital T / R component; (4) packaging the state control table and the optical timing and sending them to the digital T / R component; the timing signal is after other signals, and the control simulation device ends the whole test timing after receiving the last frame of state control table from the task scheduling module, and waits for the next trigger instruction to start the next test.

3. A radar digital T / R module receive and parallel test apparatus as claimed in claim 1, wherein: The PORT1 excitation end signal of the 3-channel microwave signal source is sent to the digital T / R component to provide an excitation source, the PORT2 local oscillator signal end provides a local oscillator for the digital T / R component, and the PORT3 clock signal is sent to the digital T / R component and the control simulation device as a clock reference of the whole system. The clock signal is an internal trigger point frequency mode, and the local oscillator signal and the excitation signal channel are external trigger sweep frequency modes, which realize rapid multi-frequency point testing under the specific timing of the control simulation device.

4. A radar digital T / R module receive and parallel test apparatus according to claim 1, wherein: The 3-channel microwave signal source is connected to the clock input port of the microwave adapter through one end of a 1-to-2 power divider, and connected to the clock interface of the control simulation device through the other end.

Images