Method for detecting micro-motion target through-wall radar

Abstract

The invention discloses a method for detecting a micro-motion target of a through-wall radar, and belongs to the field of radar detection and the field of through-wall radar detection. The method fordetecting the micro-motion target of the through-wall radar comprises the following steps that collected intermediate frequency echo signal is subjected to pulse compression treatment; a narrowband filter is designed according to Doppler frequency shift characteristics of a micro-motion target and used for suppressing out-of-band clutter; the signal after clutter suppression treatment is subjectedtocoherent integration; the treated signal is subjected to constant false alarm detection; the pulse compression increases the signal-to-noise ratio and distance accuracy; the clutter suppression caneffectively suppress strong clutter behind the obstacle; according to the method for detecting the micro-motion target of the through-wall radar,on the basis of the analysis of the Doppler frequencyshift characteristics of the micro-motion target, and weak echo waves of the micro-motion target behind a wall are subjected to treatments such as targeted wave filtering, amplification, and extraction, and effective detection of the micro-motion target is achieved.

Description

technical field [0001] The invention belongs to the field of radar detection and the field of through-wall radar detection, in particular to a method for detecting micro-moving targets of through-wall radar. Background technique [0002] Through-wall detecting radar (TWDR), referred to as through-wall radar, is a device that detects targets behind walls or other obstacles through electromagnetic wave signals. Through-wall radar detects and tracks targets behind obstacles by processing and analyzing echo signals. Through-the-wall radar is mainly used in special operations, anti-terrorism and stability maintenance, emergency rescue and disaster relief and other fields. At present, through-the-wall radar has poor detection effect on micro-moving targets such as heartbeat and breathing, and it is difficult to quickly detect micro-moving targets and read out their distance in the background of clutter. In addition, the existing detection methods commonly used in through-wall ra...

AI Technical Summary

Problems solved by technology

At present, through-the-wall radar has poor detection effect on micro-moving targets such as heartbeat and breathing, and it is difficult to quickly detect micro-moving targets and read their distance in the background of clutter.

In addition, the existing detection methods commonly used in wall-penetrating radars are difficult to extract the Doppler frequency of micro-moving targets.

Images