A radar target detection method under the constraint of data transmission rate

Abstract

The invention discloses a radar target detection method under the constraint of the data transmission rate, and belongs to the technical field of radars. The method comprises that echo data of a multistatic radar system is obtained, and observation vectors of all space diversity channels are obtained; self-adaptive coupling filtering is carried out on the observation vectors to obtain local examination statistics of each space diversity channel; the data transmission rate of each space diversity channel is obtained, the local false alarm probability of each space diversity channel is calculated, and a first threshold is determined; the local examination statistics of each local examination statistics is compared with the first threshold, and local examination statistics greater and lower than the first threshold are determined; the global examination statistics are obtained; the global false alarm probability is obtained, and a second threshold is determined according to the global false alarm probability; and if the global examination statistics are greater than the second threshold, the multistatic radar system determines a target exists in a detection unit. The radar target detection method can reduce the data transmission amount between local radar stations and a fusion center.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a radar target detection method under the constraint of data transmission rate, which can be used for target detection of a multi-base radar system. Background technique [0002] A multistatic radar system consists of multiple radar base stations that are far apart in space, so as to observe radar targets from different angles, so as to obtain the spatial diversity gain of the target and improve the target detection performance of the radar system. [0003] Compared with the traditional single-station radar, the multi-base radar system needs to transmit the echo data of each radar base station to the information fusion center for joint processing, which requires each radar base station to communicate with the information fusion center, requiring a large communication transmission bandwidth. If optical fiber communication is used, its communication bandwidth can meet the requiremen...

AI Technical Summary

Problems solved by technology

Although the distributed detection method based on local judgment can effectively reduce the calculation amount of the fusion center and the data transmission amount between the local radar station and the fusion center, it destroys the structure of the original data and reduces the amount of information contained in the data. Reduced target detection performance of the radar system

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