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Space-frequency-polarization combined cooperation detection method

A detection method and space technology, applied in the direction of measuring device, radio wave measurement system, radio wave reflection/re-radiation, etc., can solve the problems of low detection dimension, few space diversity paths, limited improvement of detection performance, etc., to achieve detection High performance, large power range, and the effect of overcoming the decline in detection ability

Active Publication Date: 2014-07-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

Among them, increasing the power of the radar transmitter not only increases the hardware cost and technical difficulties; in recent years, the main use of back-end signal processing methods to improve the detection performance of the radar system has limited improvement in detection performance, and it is difficult to meet the detection requirements for stealth targets; Although the radar network can use the information of multiple radar nodes for joint processing, it has the disadvantages of low level of information fusion, few diversity paths for space diversity, and low detection dimension, which still cannot meet the detection requirements for stealth targets.

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  • Space-frequency-polarization combined cooperation detection method

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Embodiment Construction

[0015] In order to describe the content described in the present invention for convenience, at first do following term definition:

[0016] Space diversity: It means that the radar system uses multiple antennas with large spacing to observe the target from different directions to obtain the RCS information of the radar cross section.

[0017] Frequency diversity: It means that the radar system emits multiple electromagnetic waves with relatively large intervals to irradiate space targets, and uses the difference in the reflection intensity of electromagnetic waves of different frequencies by the target to obtain RCS information of different frequency information.

[0018] Polarization diversity: refers to the fact that the radar system transmits horizontally polarized electromagnetic waves and vertically polarized electromagnetic waves through dual-polarized antennas. Using the target to change the polarization of the electromagnetic wave, the RCS information of the radar cross...

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Abstract

The invention provides a space-frequency-polarization combined cooperation detection method. Considering randomness of a target attitude angle, the method that the largest weighted average detection probability is taken on azimuths is adopted, so that spatial attributes, frequency attributes and polarization attributes of all node radar in a cooperation network are configured, a constructed cooperation detection system can achieve a space-frequency-polarization diversity technology in a combined mode, more and richer target diversified information is obtained in comparison with other radar systems, detection performance is higher, the power range is larger, and furthermore, the mode that a node radar system is combined with a network is adopted, so that the cooperation detection method has the advantages of being resistant to destroying and interfering and achieving self-organization.

Description

technical field [0001] The invention belongs to radar target detection technology. Background technique [0002] The monostatic radar cuts the large-scale air defense area into multiple sub-areas that partially cover each other. Each radar uses the continuous scanning of the antenna (machine scan or phase scan) to complete the all-round monitoring of one of the sub-areas, and multiple radars cover The entire air defense area. Due to the rapid development of various flying targets, the detection performance of traditional radars has been reduced, resulting in the reduction of radar power range and the formation of many gaps. [0003] In order to expand the range of radar power, methods such as increasing the radar power-aperture product, improving the radar back-end signal processing, and adopting radar networking can be used. Among them, increasing the power of the radar transmitter not only increases the hardware cost and technical difficulties; in recent years, the main ...

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Application Information

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IPC IPC(8): G01S13/87
CPCG01S7/024G01S7/42G01S13/426
Inventor 崔国龙王佰录汪兵刘羽锐易伟杨建宇杨晓波孔令讲
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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