A moving target detection system and method based on bistatic radar
A technology of moving target detection and bistatic radar, which is applied in the field of communication, can solve the problems of low detection accuracy and narrow application range of moving targets, and achieve the effect of wide application range and high detection accuracy
Active Publication Date: 2019-12-06
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology
[0005] An object of the embodiments of the present invention is to solve the problems of low accuracy and narrow application range in the prior art for detecting moving targets
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[0045] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0046] figure 1 Shows a schematic structural diagram of a moving target detection system based on bistatic radar provided by an embodiment of the present invention, see figure 1 , The system includes: a receiving subsystem 110 and a signal processing subsystem 120 connected to each other;
[0047] The receiving subsystem 110 is used...
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The embodiment of the invention discloses a moving target detection system and method based on a bistatic radar. According to the system, a receiving sub-system receives signals input by a target channel and a reference channel; time-frequency synchronization processing is carried out on the received signals, and dual intermediate frequency signals are output; the target channel transmits target echo intercepted and tracked, and the reference channel is used for transmitting a direct wave; a signal processing sub-system is used for carrying out phase correction processing and moving target processing on the echo based on the reference phase of the direct wave to acquire the motion state and position of a moving target; and the dual intermediate frequency signals comprise a target echo intermediate frequency signal and a direct wave intermediate frequency signal. According to the embodiment of the invention, the direct wave and the echo of a cooperative or non-cooperative radar are collected; phase correction processing is carried out on the echo based on the reference phase of the direct wave; moving target processing is carried out based on the echo intermediate frequency signal after phase correction, so as to acquire the motion state and position of the moving target; and the system and the method have the advantages of high detection accuracy and wide application range.
Description
Technical field [0001] The embodiment of the present invention relates to the field of communication technology, in particular to a moving target detection system and method based on a bistatic radar. Background technique [0002] In recent years, enhancing the capture, tracking, display and detection of moving targets has become one of the key technologies for the development of new photoelectric integrated quality measurement systems. With the improvement of the performance of electronic devices and the advancement of digital signal processing technology, moving object processing technology has achieved considerable development. The main purpose of the moving target display technology array is to enhance the radar's target detection ability and display moving targets. It can detect target reflection signals with different radial motion speeds in various clutters. Among them, radar clutter refers to the echoes reflected from objects such as ground, sea, cloud and rain in the s...
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IPC IPC(8): G01S13/00G01S13/50G01S13/58G01S7/486
CPCG01S7/486G01S7/4861G01S13/003G01S13/50G01S13/58
Inventor 宋杰蔡复青张财生刘宁波王国庆
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA