Method for ship target detection underbackground of heaven and ground wave radar widening clutters

Abstract

The invention discloses a method for ship target detection under the background of heaven and ground wave radar widening clutters. The method comprises steps as follows: firstly, a pseudo point trackin radar echo is given by use of a low-threshold target detector, pseudo point tracks of multiple accumulation cycles are processed by use of a TBD (track before detect) algorithm based on dynamic planning, a track is given to points which belong to a target point track in the pseudo point tracks, and class target clutter points in the pseudo point tracks are filtered out. Through sufficient combination of actual measurement data samples, TBD and a self-adaptive detection method are combined, anda target detection method of target clutter distinguishing of the TBD algorithm based on dynamic planning of multiple accumulation cycles is proposed. Actual measurement data results prove that the method can distinguish target points and clutter points in the low-threshold target detector to a great extent, and provide more accurate pilot information for following clutter suppression and clutter background extraction.

Description

technical field [0001] The invention relates to the field of ship target detection, in particular to a ship target detection method under the background of space-ground wave radar broadening clutter. Background technique [0002] The high-frequency over-the-horizon radar based on the combined propagation mode of sky wave transmission and ground wave reception is a new system of early warning radar, which has the dual advantages of long sky wave propagation distance, large coverage area and stable ground wave propagation around the sea surface, and has the inherent advantages of bistatic radar. Concealment and anti-interference ability. This new system of radar is based on the existing sky-wave and ground-wave over-the-horizon radar technology. It is expected to overcome the defects of sky-wave and ground-wave over-the-horizon radar, give full play to the advantages of the two, form complementary advantages, and form a space-ground integration The advanced radar system detec...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a ship target detection method under the background of widened clutter of space-ground wave radar, to solve the problem of difficult ship target detection under the background of high-frequency space-ground wave radar widened echo spectrum, so as to be suitable for high-frequency mixed space-ground wave radar affected by the ionosphere phase Target detection under broadened sea clutter background affected by radial disturbance and bistatic angle

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