Target joint detection method based on self-adaptive dual pointing and difference beam for airborne radar

Abstract

The invention belongs to the technical field of radar target detecting and discloses an airborne radar self-adaptation double-pointing and difference beam target joint detection method. The method comprises the steps that two equal wave beam airspace guiding vectors of a leftward deviation set angle and a rightward deviation set angle of a main wave beam center are constructed, q is equal to 1 and 2 in sequence, the data of each distance unit in the space-time two-dimension echo data are processed through a Doppler domain factorization method respectively, and under the constraint of a <q>th equal wave beam, an airspace self-adaptation filtering result of a corresponding filtering unit is obtained; according to the airspace self-adaptation filtering results of distance units under the constraint of the <q>th equal wave beam, unit average constant false-alarm detecting is carried out respectively, and a <q>th group of target detecting units are obtained; if in a first group of target detecting units and a second group of target detecting units, any group of target detecting results are existing targets, the final target detecting results are the existing targets; and otherwise, the final target detecting results are non-existing targets.

Description

Technical field [0001] The invention belongs to the technical field of radar target detection, and particularly relates to a target joint detection method of an airborne radar adaptive bidirectional and differential beam. Background technique [0002] The main task of airborne radar is to detect targets in the clutter background. One of the more commonly used detection methods is the target detection method based on adaptive and beam. This method only forms the maximum gain for the target at the center of the main beam, but when the target deviates from the center of the main beam, the target may degrade the detection performance due to the gain loss caused by the beam edge. Summary of the invention [0003] The purpose of the present invention is to address the shortcomings of the prior art and propose a method for joint detection of targets with adaptive bidirectional and differential beams for airborne radar. The detection is performed separately in the adaptive beam. The targ...

AI Technical Summary

Problems solved by technology

This method only forms the maximum gain for the target at the center of the main beam, but when the target deviates from the center of the main beam, the target may cause a decrease in detection performance due to the gain loss caused by the edge of the beam

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