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Radar signal analog source system and signal analog method thereof

A radar signal and signal simulation technology, applied in radio wave measurement systems, measurement devices, instruments, etc., can solve the problems of high cost, high hardware complexity, difficulty in simulating radar signals, etc., to simulate dynamic characteristics, reduce hardware costs, System circuit simple effect

Active Publication Date: 2014-02-05
SHANGHAI RADIO EQUIP RES INST
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The analog source designed by the first technology has strong versatility, but the hardware complexity is high and the cost is high
The analog source hardware designed by the second technology is simple and low in cost, but its versatility is poor, and it is difficult to simulate more complex radar signals, often only simulating simple point target echo signals

Method used

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  • Radar signal analog source system and signal analog method thereof
  • Radar signal analog source system and signal analog method thereof

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Embodiment Construction

[0040] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, a radar signal simulation source system includes a control computer 1, a field programmable gate array 2 (Field Programmable Gate Array, FPGA, the model is Altera's Cyclone series EP1C12Q240C6), an interface chip 3 (422 interface chip, the model is MAXIM The company's MAX491ESD realizes the transceiver control of 422 communication), the first direct digital synthesis module 4, the second direct digital synthesis module 5, the synthesizer 6, the microwave mixing module 7, and the digital attenuator 8; the analog source control of the control computer 1 The signal output terminal is connected to the input terminal of the field programmable gate array 2 through the interface chip 3; the three outputs of the field programmable gate array 2 are respectively connected to the first dire...

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Abstract

The invention discloses a radar signal analog source system and a signal analog method of the radar signal analog source system. The radar signal analog source system comprises a control computer, a field-programmable gate array, an interface chip, a first direct digital synthesis module, a second direct digital synthesis module, a synthesizer, a microwave frequency mixing module and a digital attenuator. The signal analog method of the radar signal analog source system comprises the following steps that firstly, the field-programmable gate array receives a control signal; secondly, needed control words are worked out; thirdly, target echo signals, speed pull off signals and noise signals are generated by the first direct digital synthesis module and the second direct digital synthesis module; fourthly, a synthesis signal is generated by the synthesizer; fifthly, a frequency mixing signal is generated by the microwave frequency mixing module; sixthly, after the digital attenuator receives the radar echo power and the frequency mixing signal, the radar echo analog signal is output.

Description

technical field [0001] The invention relates to radar signal simulation of radar seeker simulation testing equipment, in particular to a radar signal simulation source system and a signal simulation method thereof. Background technique [0002] The transmission signal of the pulse Doppler radar is a high repetition frequency pulse modulation signal. The transmission signal is scattered after encountering the target and deceptive interference target. The target echo and clutter signal are received by the radar receiver, and the target signal is obtained by the radar signal processor. distance, speed, angle and other information. The radar signal simulation source is mainly used to simulate the radar signal received by the radar receiver in the real environment, complete the test of the receiving performance of the radar echo receiver under the laboratory environment, and verify the various functional technical indicators and anti-interference ability of the radar system . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052G01S7/406
Inventor 邵晟卢岩辉周郁刘莹姜海卫
Owner SHANGHAI RADIO EQUIP RES INST
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