Double-base MIMO radar tracking, positioning and deception jamming recognition method

Abstract

The invention discloses a double-base MIMO radar tracking, positioning and deception jamming recognition method and belongs to the technical field of radar communication technology. The method comprises the steps that firstly, a residual observation vector is worked out, a measurement predicted value of a target is obtained with a one-step prediction method, and a residual equation set coefficient matrix is obtained through the predicted value; secondly, the signal to noise ratio of an echo signal is worked out, and a least square weighting matrix is worked out; thirdly, target coordinate residuals are worked out according to the observation vector, the residual equation set coefficient matrix and the least square weighting matrix, and target coordinates are worked out according to the target coordinate residuals and the target coordinate predicated values; a fitting error vector is worked out according to the least square weighting matrix and the residual observation vector, then a detection statistical magnitude is worked out, the detection statistical magnitude is substituted into a detector, an obtained value is compared with the detection threshold lambda <0>, if the obtained value is larger than the detection threshold lambda <0>, the target is deception jamming, and if the obtained value is smaller than the detection threshold lambda <0>, the target is a real target. In this way, the double-base MIMO radar tracking, positioning and deception jamming recognition method has the advantages of being high in practicability, high in precision, capable of recognizing deception jamming, small in calculation amount and high in reliability in the double-base MIMO radar tracking process.

Description

technical field [0001] The invention belongs to the technical field of radar communication, in particular to bistatic MIMO radar anti-distance deception interference. Background technique [0002] Range spoofing is one of the most common active jamming modes. The jammer amplifies the detected radar signal, and then delays forwarding; the jamming signal enters from the main lobe of the radar, and uses false target distance information to act on the radar target detection and tracking system. Since the energy of the interference signal is greater than the real target signal, and it can obtain the same compression processing gain as the radar echo, it can induce the radar to detect or track it, so that the radar cannot correctly measure the parameter information of the real target, detect and track Performance is severely degraded. Therefore, it is very important to suppress the spoofing interference. In order to achieve this goal, it is first necessary to identify whether th...

AI Technical Summary

Problems solved by technology

Theoretically speaking, after using cutting-edge tracking technology, conventional radar can identify and implement effective countermeasures against distance deception jamming. However, the effect of actual countermeasures is not ideal. Is the signal at the front of the gate the target signal or general noise or side lobes of the compressed signal?

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