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

A clutter background and target detection technology, applied in the field of ship target detection, can solve problems such as difficulty in ship target detection, and achieve the effect of improving effectiveness

CN110456322AInactive Publication Date: 2019-11-15SHANGHAI RADIO EQUIP RES INST
4 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-11-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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...

Examples

Embodiment Construction

[0027] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0028] The embodiment of the present invention provides a ship target detection method based on TBD-based target clutter discrimination based on space-ground wave radar broadening clutter. A target detection method based on the target clutter discrimination of the Dynamic Programming-TBD (DP-TBD) tracking-before-detection algorithm. In this method, on the basis of the low-threshold detector to obtain the pseudo-spots of multiple accumulation cycles, TBD is used to correlate these pseudo-spots during multiple accumulation cycles, and the points that can form the flight track are reserved as targets for protection. , and then perform clutter suppression, so that the effectiveness of the algorithm ca...