Test system of radar multichannel receiver

Abstract

The utility model discloses a test system of a radar multichannel receiver. A data processor control module generates a power-up signal; the signal generation module receives the power-up signal and outputs a radio frequency input signal required by a test; the switch matrix receives radio frequency input signals and outputs various switched input signals; the multi-channel receiver receives various input signals to obtain first test signals of the multi-channel receiver and outputs at least one second test signal in response to a switching signal of the switch matrix, and the number of the second test signals is smaller than or equal to that of the first test signals; the signal testing module is used for responding to the second testing signal, a modularized spectrum analyzer and a modularized oscilloscope are adopted to test the second testing signal, various testing index data are obtained, the process of obtaining the various testing index data is full-automatic, subjective interference is removed, and the testing efficiency is improved. And the purpose of quickly and accurately acquiring various test indexes of the multi-channel receivers which are produced in batches is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radar receiver testing, in particular to a radar multi-channel receiver testing system. BACKGROUND

[0002] With the development of radar system and microwave integrated circuit, the application of multi-channel receiver is more and more common. In recent years, DBF (Digital Beam Forming) receiver develops rapidly, and the receiver channel can be from several to dozens, and in the modern phase control array radar, the T / R component (Transmit / Receive component) can reach hundreds or even thousands. The receiver has the characteristics of multiple testing indicators and complex testing methods. The traditional manual method of building a test platform by using general instruments and instruments and manually testing the technical indicators of the receiver not only has low testing efficiency, but also has high requirements for the quality of the testing personnel. At the same time, the testing data is read and filled by the testing personnel, which is greatly affected by human factors. After the multi-channel receiver enters mass production, a large number of tests make the traditional receiver testing method unable to meet the testing requirements. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a radar multi-channel receiver testing system, which aims to quickly and accurately obtain the testing indicators of the mass-produced multi-channel receiver.

[0004] In order to achieve the above purpose, the present application provides a radar multi-channel receiver testing system, which comprises a data processor control module, a signal generation module, a switch matrix, a signal testing module and a display unit module.

[0005] The data processor control module, the signal generation module and the switch matrix are connected in series, the output end of the switch matrix is connected in communication with the input end of the multi-channel receiver, and the output end of the multi-channel receiver is connected in communication with the signal testing module and the display unit module in series; wherein the data processor control module is used to generate a power-on signal in response to an input testing request; the signal generation module is used to output the required radio frequency input signal in response to the received power-on signal; the switch matrix is used to output the switched input signals in response to the received radio frequency input signal; the multi-channel receiver is used to obtain the first testing signals of each channel of the multi-channel receiver in response to the received input signals, and output at least one second testing signal in response to the switching signal of the switch matrix, wherein the number of the second testing signals is less than or equal to the number of the first testing signals; the signal testing module is used to test the second testing signals by using the modular spectrum analyzer and the modular oscilloscope in response to the second testing signals, and obtain the testing indicator data.

[0006] Optionally, the system further comprises a power module electrically connected to the multi-channel receiver and the switch matrix, respectively, and configured to supply power to the multi-channel receiver and the switch matrix according to a control instruction sent by the data processor control module.

[0007] Optionally, the system further comprises a display unit module communicatively connected to the signal generation module and the signal test module, and configured to display the received test index data, provide a display interface of an operating state of the signal generation module and / or the signal test module, and provide an input interface of the test request and / or an output interface of the test index data.

[0008] Optionally, the test index of the radar multi-channel receiver test system comprises at least one of sensitivity, gain, dynamic range, maximum linear output, or bandwidth.

[0009] Optionally, the data processor control module is communicatively connected to the signal generation module, the switch matrix, the multi-channel receiver, the signal test module, and the display unit module in sequence.

[0010] Optionally, the switch matrix comprises a switch matrix interface board, a first single-pole eight-throw switch, a single-pole double-throw switch, a second single-pole eight-throw switch, a third single-pole eight-throw switch, and a double-pole double-throw switch; two first ports of the switch matrix interface board are communicatively connected to the signal generation module, two second ports of the switch matrix interface board corresponding to the two first ports are communicatively connected to first ports of the first single-pole eight-throw switch and the single-pole double-throw switch, respectively, a plurality of second ports of the first single-pole eight-throw switch and the single-pole double-throw switch are communicatively connected to a plurality of third ports of the switch matrix interface board, and fourth ports of the switch matrix interface board corresponding to the plurality of third ports are communicatively connected to a plurality of first ports of the multi-channel receiver; a plurality of second ports of the multi-channel receiver are communicatively connected to first ports of the second single-pole eight-throw switch and the third single-pole eight-throw switch, respectively, second ports of the second single-pole eight-throw switch and the third single-pole eight-throw switch are communicatively connected to two first ports of the double-pole double-throw switch, respectively, two second ports of the double-pole double-throw switch are communicatively connected to two fifth ports of the switch matrix interface board, and sixth ports of the switch matrix interface board corresponding to the two fifth ports are communicatively connected to two input terminals of the signal test module.

[0011] Optionally, the switch matrix further includes: an AC / DC power module, which is electrically connected to the first single-pole eight-throw switch, the single-pole double-throw switch, the second single-pole eight-throw switch, the third single-pole eight-throw switch, and the double-pole double-throw switch, respectively.

[0012] Optionally, all double-pole double-throw switches are electromechanical radio frequency coaxial switches.

[0013] Optionally, the signal generation module is a modular signal source.

[0014] This application proposes a test system for a radar multi-channel receiver. A data processing control module responds to input test requests, generates and transmits a power-on signal. A signal generation module responds to the received power-on signal, outputs the required radio frequency (RF) input signal, and transmits the RF input signal. A switching matrix responds to the received RF input signal, outputs switched input signals, and transmits each input signal. The multi-channel receiver responds to the received input signals, obtains each of its first test signals, and responds to the switching signal of the switching matrix, outputs at least one second test signal, and transmits each of the second test signals, wherein the number of second test signals is less than or equal to the number of first test signals. A signal testing module responds to the second test signals, using a modular spectrum analyzer and a modular oscilloscope to test the second test signals and obtain various test index data. The process of obtaining these test index data is fully automated, without human interference, achieving the goal of quickly and accurately obtaining various test indexes for mass-produced multi-channel receivers. Attached Figure Description

[0015] Figure 1 A block diagram illustrating the working principle of an embodiment of the test system for the radar multi-channel receiver of this application;

[0016] Figure 2 A test software interface diagram provided for an embodiment of the test system for the radar multi-channel receiver of this application;

[0017] Figure 3 A block diagram illustrating the working principle of a switching matrix provided in an embodiment of the test system for the radar multi-channel receiver of this application;

[0018] Figure 4 A front view of the cabinet provided for an embodiment of the test system for the radar multi-channel receiver of this application;

[0019] Figure 5 A rear view of the cabinet provided for an embodiment of the test system for the radar multi-channel receiver of this application;

[0020] Figure 6The cabinet internal module diagram provided for an embodiment of the radar multi-channel receiver test system of the application;

[0021] Figure 7 The switch matrix internal composition diagram provided for an embodiment of the radar multi-channel receiver test system of the application.

[0022] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are merely intended to explain the application and are not intended to limit the application.

[0024] The technical solutions of the application will be specifically described below with reference to the accompanying drawings and embodiments. Figure 1 The structural block diagram provided for an embodiment of the radar multi-channel receiver test system of the application is shown in FIG. 1. Figure 1 The radar multi-channel receiver test system can include a data processor control module 1, a signal generation module 2, a switch matrix 3, a signal test module 5 and a display unit module 6.

[0025] The data processor control module 1, the signal generation module 2 and the switch matrix 3 are connected in series, the output end of the switch matrix 3 is communicatively connected to the input end of the multi-channel receiver 4, and the output end of the multi-channel receiver 4 is communicatively connected to the signal test module 5 and the display unit module 6 in series, wherein the data processor control module 1 is configured to generate a power-on signal in response to an input test request and send the power-on signal; the signal generation module 2 is configured to output a required radio frequency input signal in response to the received power-on signal and send the radio frequency input signal; the switch matrix 3 is configured to output switched input signals in response to the received radio frequency input signal and send the input signals; the multi-channel receiver 4 is configured to obtain first test signals of each channel of the multi-channel receiver 4 in response to the received input signals and output at least one second test signal in response to a switching signal of the switch matrix 3 and send the second test signals, wherein the number of the second test signals is less than or equal to the number of the first test signals; and the signal test module 5 is configured to test the second test signals using a modular spectrum analyzer and a modular oscilloscope to obtain test index data.

[0026] It should be noted that after the power-on signal is sent to the signal generation module 2, the signal generation module 2 automatically generates the radio frequency input signal, which is the various radio frequency input signals required by the signal source for providing index tests to the multi-channel receiver 4. The power-on signal is generated by the data processing and control module according to the pre-input test request, which can be input on site, for example, by clicking the screen of the display unit module 6 on site. The test request can also be triggered by other conditions, which is not particularly limited here. After the various radio frequency input signals are sent to the switch matrix 3, the switch matrix 3 switches the input radio frequency signals according to the target of this test to obtain the switched input signals, and sends the switched input signals to the multi-channel receiver 4. Among them, the switch matrix 3 can output the switched input signals according to the driving signal of the input radio frequency signal. After the driving signal reaches the switch matrix 3, it can trigger the preset script, and the switch matrix 3 can control the switch according to the input driving signal, thereby realizing the switching of the radio frequency input signal. It should be noted that the switch matrix is provided with a dial lever, and the control of each channel of the switch matrix 3 can also be realized by manually operating the dial lever. After receiving the input signals, the multi-channel receiver 4 can correspondingly output at least one first test signal. After the at least one first test signal is processed by the switch matrix 3, at least one second test signal is obtained, and the second test signal is sent to the signal test module 5. The signal test module 5 tests the second test signal by using the integrated modular spectrum analyzer and modular oscilloscope to obtain various test index data. It can be understood that the modules that can be integrated by the signal test module 5 are not limited to spectrum analyzers and oscilloscopes, but can also be other test instruments, such as network analyzers and power meters. It can be understood that the number of signal generation modules can be multiple, the first test signal can come from a certain signal generation module in the multiple signal generation modules, and the second test signal can be a test signal of a certain index, so the second test signal is at least one.

[0027] The utility model realizes the test of multi-channel receiver 4, solves the problem of low efficiency, high quality requirement of test personnel and many human interference factors of manual test multi-channel receiver 4 module. The hardware module and component device selected by the utility model are all shelf products of various manufacturers, which are of excellent quality, low price and have guarantee for the technical index test of the receiver, so that the utility model design realizes short cycle, stable and reliable work and low cost.

[0028] The technical scheme of the utility model will be further described below in combination with the accompanying drawings. Figure 4 , the accompanying drawings Figure 5 and the accompanying drawings Figure 6 .

[0029] Reference Figure 4The utility model discloses a movable standard cabinet, all hardware modules are assembled in the cabinet, the upper end of the cabinet is equipped with an alternating current fan, and a wind channel is formed around the cabinet during operation of the cabinet for heat dissipation of internal hardware modules. Figure 5 The rear of the cabinet is a switch matrix 3 interface board, a power port, a U port and a network port.

[0030] The test system of the radar multi-channel receiver can further include a power module 7, wherein the power module 7 includes two programmable power supplies, the two programmable power supplies are respectively electrically connected to the multi-channel receiver 4 and the switch matrix 3, and the power module 7 is used to supply power to the multi-channel receiver 4 and the switch matrix 3 according to the control instruction sent by the data processor control module 1. It should be noted that the programmable power supply is a power supply device that can control the output voltage, current and other parameters through a program. It can be understood that the power module 7 can also be manually operated, which is more flexible in on-site processing.

[0031] The display unit module 6 is communicatively connected to the signal generation module 2 and the signal test module 5, and is used to display the received test index data, provide a display interface of the running state of the signal generation module 2 and / or the signal test module 5, and provide an input interface of the test request and / or an output interface of the test index data. Specifically, the test index of the test system of the radar multi-channel receiver can at least include one of sensitivity, gain, dynamic range, maximum linear output or bandwidth.

[0032] In the embodiment of the present application, the switch matrix 3 can include a switch matrix interface board 301, a first single-pole eight-throw switch 302, a single-pole double-throw switch 303, a second single-pole eight-throw switch 304, a third single-pole eight-throw switch 306 and a double-pole double-throw switch 307: two first ports of the switch matrix interface board 301 are communicatively connected to the signal generation module, two second ports of the switch matrix interface board 301 corresponding to the two first ports are respectively communicatively connected to the first single-pole eight-throw switch 302 and the single-pole double-throw switch, respectively, a plurality of second ports of the first single-pole eight-throw switch 302 and the single-pole double-throw switch are communicatively connected to a plurality of third ports of the switch matrix interface board 301, and a plurality of fourth ports of the switch matrix interface board 301 corresponding to the plurality of third ports are communicatively connected to a plurality of first ports of the multi-channel receiver.

[0033] The second ports of the multi-channel receiver are respectively connected to the first ports of the second single-pole eight-throw switch 304 and the third single-pole eight-throw switch 306, the second ports of the second single-pole eight-throw switch 304 and the third single-pole eight-throw switch 306 are respectively connected to the first ports of the double-pole double-throw switch 307, the second ports of the double-pole double-throw switch 307 are respectively connected to the fifth ports of the switch matrix interface board 301, and the sixth ports of the switch matrix interface board 301 corresponding to the fifth ports are respectively connected to the input ends of the signal test module.

[0034] It should be noted that the switch matrix 3 can also include an ACDC power module 308, which is respectively connected to the first single-pole eight-throw switch 302, the second single-pole eight-throw switch 304, the third single-pole eight-throw switch 306, and the double-pole double-throw switch 307 and the single-pole double-throw switch 303. It should be noted that the first single-pole eight-throw switch 302, the single-pole double-throw switch 303, the second single-pole eight-throw switch 304, the third single-pole eight-throw switch 306, and the double-pole double-throw switch 307 are all electromechanical RF coaxial switches.

[0035] Among them, the electromechanical RF coaxial switch is an electromechanical device used to control the transmission path of RF signals. The device controls the closing and opening of mechanical contacts through an electromagnetic drive mechanism, thereby realizing the conduction and blocking of RF signals in a coaxial transmission line.

[0036] The following is an example. In order to cooperate with the test of the multi-channel receiver 4, the switch matrix 3 uses a mechanical reflective switch with a working frequency band of DC-18GHz, TTL control, and a 1*8 matrix, a 1*2 matrix, and a 2*16 matrix are built to form a 1*8 matrix, a 1*2 matrix, and a 2*16 matrix. The switch matrix 3 uses three single-pole eight-throw switches, a single-pole double-throw switch 303, and a double-pole double-throw switch 307. The working principle diagram of the switch matrix 3 is shown in Figure 2. Figure 3 The composition thereof is shown in Figure 3. Figure 7 .

[0037] Referring to Figure 6 , the data processing machine control module 1 includes an industrial computer, and the signal generation module 2 is a modular signal source. Among them, the modular signal source is to split different functions such as signal generation, modulation, and amplification into independent modules. Each module has a standard interface, which can be independently operated, tested, and upgraded, and can also be combined as needed through these interfaces.

[0038] It is worth noting that the automatic testing of the multi-channel receiver can also be implemented by software. When the automatic testing of the multi-channel receiver is implemented by software, the data processor control module 1 is respectively connected to the signal generation module 2, the switch matrix 3, the multi-channel receiver 4, the signal testing module 5 and the display unit module 6.

[0039] In this embodiment, the test indicators of the multi-channel receiver 4 include more than ten technical indicators such as sensitivity, gain, dynamic range, maximum linear output, and bandwidth. To achieve automatic testing of the multi-channel receiver 4, the software solution is as follows: The control interface of the signal generation module 2 is configured to output various RF input signals required for testing different technical indicators of the multi-channel receiver 4; the control interface of the signal testing module 5 is configured to perform tests on different technical indicators of the multi-channel receiver 4 as required; the channel switching of the switch matrix 3 module is controlled; the voltage output switch of the power supply module 7 is controlled; different test items of the receiver are tested separately, the test data is directly filled into the test table, and the data is judged and stored. (See attached...) Figure 2 The test software interface of the multi-channel receiver 4 automatic test system has the functions of collecting test product information, monitoring instrument initialization status, and managing product power supply. It also integrates one-click testing and separate testing according to test items for the multi-channel receiver 4. Testers only need to click the buttons on the interface to perform the required tests. This utility model integrates hardware modules and operating software into one unit, adopts a movable standard cabinet and universal interface, and enables one-click operation, making it very convenient to use.

[0040] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A test system for a radar multichannel receiver, characterized by, The system comprises a data processor control module, a signal generation module, a switch matrix, a signal test module and a display unit module. The data processor control module, the signal generation module and the switch matrix are connected in series, the output end of the switch matrix is connected with the input end of the multi-channel receiver, and the output end of the multi-channel receiver is connected with the signal test module and the display unit module in series. The data processor control module is configured to generate a power-on signal in response to an input test request. The signal generation module is configured to output a required radio frequency input signal in response to the received power-on signal. The switch matrix is configured to output switched input signals in response to the received radio frequency input signal. The multi-channel receiver is configured to obtain a plurality of first test signals in response to the received input signals, and output at least one second test signal in response to a switching signal of the switch matrix, wherein the number of the second test signals is less than or equal to the number of the first test signals. The signal test module is configured to test the second test signals by using a modular spectrum analyzer and a modular oscilloscope to obtain test index data. The system further comprises a power module comprising two programmable power supplies, wherein the two programmable power supplies are respectively connected with the multi-channel receiver and the switch matrix, and the power module is configured to supply power to the multi-channel receiver and the switch matrix according to a control instruction sent by the data processor control module.

2. The test system for a radar multichannel receiver of claim 1, wherein, The display unit module is further connected with the signal generation module and the signal test module, and is configured to display the test index data, provide a display interface of the running state of the signal generation module and / or the signal test module, and provide an input interface of the test request and / or an output interface of the test index data. The test index of the radar multi-channel receiver test system comprises at least one of sensitivity, gain, dynamic range, maximum linear output or bandwidth.

3. The test system for a radar multichannel receiver of claim 1, wherein, The data processor control module is connected with the signal generation module, the switch matrix, the multi-channel receiver, the signal test module and the display unit module.

4. The test system for a radar multichannel receiver of claim 1, wherein, The switch matrix comprises a switch matrix interface board, a first single-pole eight-throw switch, a single-pole double-throw switch, a second single-pole eight-throw switch, a third single-pole eight-throw switch and a double-pole double-throw switch. ​ 5. The test system for a radar multichannel receiver of claim 1, wherein, ​ 6. The test system for a radar multichannel receiver of claim 1, wherein, ​ The two first ports of the switch matrix interface board are communicatively connected to the signal generation module, the two second ports of the switch matrix interface board corresponding to the two first ports are respectively communicatively connected to the first single-pole eight-throw switch and the single-pole double-throw switch, the multiple second ports of the first single-pole eight-throw switch and the single-pole double-throw switch are respectively communicatively connected to the multiple third ports of the switch matrix interface board, and the fourth ports of the switch matrix interface board corresponding to the multiple third ports are communicatively connected to the multiple first ports of the multi-channel receiver. The multiple second ports of the multi-channel receiver are respectively communicatively connected to the first ports of the second single-pole eight-throw switch and the third single-pole eight-throw switch, the second ports of the second single-pole eight-throw switch and the third single-pole eight-throw switch are respectively communicatively connected to the two first ports of the double-pole double-throw switch, the two second ports of the double-pole double-throw switch are respectively communicatively connected to the two fifth ports of the switch matrix interface board, and the sixth ports of the switch matrix interface board corresponding to the two fifth ports are communicatively connected to the two input terminals of the signal test module.

7. The test system for a radar multichannel receiver of claim 6, wherein, The switch matrix further comprises: An ACDC power module electrically connected to the first single-pole eight-throw switch, the single-pole double-throw switch, the second single-pole eight-throw switch, the third single-pole eight-throw switch and the double-pole double-throw switch.

8. The test system for a radar multichannel receiver of claim 6, wherein, The double-pole double-throw switch is an electromechanical radio frequency coaxial switch.

9. The test system of claim 1, wherein, The signal generation module is a modular signal source. The signal generation module is a modular signal source.

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