Unlock instant, AI-driven research and patent intelligence for your innovation.

PD radar ghosting suppression method based on trace point attribute correlation discrimination

An attribute correlation and point trace technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of different ghosting mechanisms and inability to apply PD radar.

Active Publication Date: 2021-06-18
BEIJING INST OF RADIO MEASUREMENT
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current method is mainly to suppress the ghost in MIMO through-the-wall radar. However, the ghost generation mechanism in MIMO through-wall radar is different from that in PD radar, so it cannot be applied in PD radar.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • PD radar ghosting suppression method based on trace point attribute correlation discrimination
  • PD radar ghosting suppression method based on trace point attribute correlation discrimination
  • PD radar ghosting suppression method based on trace point attribute correlation discrimination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0024] The commonly used methods of radar clutter suppression include Moving Target Indication (MTI), Moving Target Detect (MTD) and Pulse Doppler (Pulse Doppler, PD), etc. PD processing has good clutter suppression performance and are widely used in modern radar systems. According to the "Radar Manual", the repetition frequency that makes the maximum detection distance unambiguous is called low repetition frequency (using MTI and MTD technology), the repetition frequency that makes the maximum speed of the detection target unambiguous is called high repetition frequency, and the repetition frequency that makes the maximum detection target unambiguous is called high repetition frequency, and the distance and spee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a PD radar ghosting suppression method based on trace point attribute correlation discrimination, and belongs to the technical field of radar information processing. The method comprises the following steps: respectively carrying out Doppler filtering processing, distance dimension detection condensation and Doppler dimension detection condensation on first pulse group data and second pulse group data which are used for distance ambiguity resolution; then carrying out trace point extraction processing, and determining an attribute identifier of each trace point according to a preset evaluation rule; then carrying out distance correlation processing on the trace points to obtain trace point pairs containing distance correlation points; and judging the attribute identifier of the trace point of each trace point pair, judging whether the corresponding trace point pair is a ghosting image or not according to the attribute identifier, and if so, deleting the corresponding trace point pair. According to the PD radar ghosting suppression method provided by the invention, the suppression of the PD radar ghosting is realized by judging the trace point attribute identification of the trace point extraction result before distance ambiguity resolution and utilizing the multi-dimensional attribute difference between the ghosting trace point and the real target trace point.

Description

technical field [0001] The invention relates to the technical field of radar information processing, in particular to a method for suppressing PD radar ghosts based on point trace attribute correlation discrimination. Background technique [0002] PD radar has ambiguity in the range, and the range de-ambiguity can be realized through the staggered design of the pulse group, and the real distance information of the target can be obtained. Due to the influence of radar detection error and residual clutter, some false traces that do not exist in the real environment will be produced in the process of range defuzzification. Such false traces are called ghosts. The existence of ghosts will not only affect the real target Tracks are tracked stably and false tracks will be formed, so ghosts must be suppressed during the range deblurring process. [0003] The current method is mainly to suppress the ghost in MIMO through-the-wall radar. However, the ghost generation mechanism in MI...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S7/40
CPCG01S7/36G01S7/4004
Inventor 夏永红李石岗韩丕强马心宇侯延
Owner BEIJING INST OF RADIO MEASUREMENT