Dynamic and static human body target self-adaptive detection method and system based on through-the-wall radar

Abstract

The invention discloses a dynamic and static human body target self-adaptive detection method and system based on a through-the-wall radar, and relates to the technical field of radar detection. The dynamic and static human body target self-adaptive detection method comprises the following steps of: SS01, acquiring a baseband signal through frequency mixing and amplification of the through-the-wall radar and a radio frequency module; SS02, collecting 32 groups of data, performing distance-to-Fourier transform and Doppler-to-Fourier transform, performing modulus operation, and performing Doppler-direction accumulation on corresponding distance units; SS03, judging a moving human body; SS04, converting a static human body distance unit; SS05, judging the static human body; and SS06 performing position determination. According to the dynamic and static human body target self-adaptive detection method and the system, the moving human body target and the static human body target can be respectively detected through using a moving target detection algorithm and a static target detection algorithm; on one hand, the detection accuracy rate is improved, on the other hand, the interference of the moving target on the static human body target detection is effectively suppressed; and by utilizing the feature of low respiratory heartbeat frequency of the static human body target, the problem that an existing detection method cannot simultaneously detect the moving target and the static target is solved.

Description

technical field [0001] The invention belongs to the technical field of radar detection, in particular to a method and system for adaptive detection of moving and static human targets based on through-wall radar. Background technique [0002] Ultra-wideband through-wall radar detection technology uses electromagnetic waves to penetrate obstacles such as building walls to detect, locate and identify hidden targets in buildings. It has great application value and social benefits in the fields of anti-terrorism, law enforcement, and rescue. At present, , the detection of through-wall radar targets generally only detects and locates moving targets, because the signal energy generated by the body movement of the target is much greater than the signal energy generated by the breathing and heartbeat when the target is in a static state, it is difficult when the human target is in a moving state At the same time, other stationary human targets in the area to be detected are detected....

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an adaptive detection method for moving and static human targets based on through-wall radar, which can detect moving human targets and static human targets respectively through the moving target detection algorithm and the static target detection algorithm, which solves the problem that existing detection methods cannot Realize the problem of simultaneous detection of moving and static targets

Images