Target simulator of external field of radar adopting carrier wave extraction video storage method

Abstract

The invention relates to a target simulator of an external field of a radar adopting a carrier wave extraction video storage method, which is characterized by comprising a receiving unit, a local oscillation frequency-division unit, an intermediate-magnification unit, a carrier wave extraction unit, a frequency synthesis unit, a signal processing unit, a single-side band modulation unit and an emission unit, wherein the receiving unit comprises a first frequency mixer and a first band-pass filter, the local oscillation frequency-division unit comprises a first magnifier, a power distributor and a frequency divider, the intermediate-magnification unit comprises a second magnifier and a pulse envelope extraction device, the signal processing unit comprises a first digital direct synthesizer DDS1, a second digital direct synthesizer DDS2, a single chip computer and a modulation pulse storage time delayer, the single-side band modulation unit comprises a single-side band modulator, a third magnifier and a second band-pass filter, and the emission unit comprises a third isolator, a fourth magnifier and a pulse modulator. The invention has the advantages of simple structure, low power consumption, strong versatility and convenient use of the external field.

Description

Technical field [0001] The invention relates to a wireless transceiver device, in particular to a radar echo signal simulator, in particular to a radar outfield target simulator using a carrier extraction video storage method. Background technique [0002] At present, radars are equipped with radar self-checking equipment BIT, that is, the computer polls and detects the working status of multiple main components of the radar and judges whether the work is normal. But often this kind of detection is not comprehensive. BIT detection on the ground is normal, but in actual use, the range of the radar is reduced, exposing the insufficiency of BIT detection, because not all components of the radar system can be checked by BIT. For example, the performance of components such as antenna feeder and transceiver switch. Therefore, it is very necessary to check and evaluate the radar system's ability to detect targets in the field environment. There are usually two methods. One method is t...

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Problems solved by technology

[0003] The object of the present invention is aimed at the existing test platform for inspecting the ability of the radar system to detect targets in the field environment. The temperature difference is large, the working environment is harsh, and it is difficult to realize; the radar simulator has complex structure, high power consumption, high production cost, and poor versatility. A radar with simple structure and low power consumption using the method of carrier extraction and video storage is proposed Field Target Simulator

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