Method and device for optimal processing of through-wall radar signals

Abstract

The invention discloses a method and device for optimal processing of through-wall radar signals. The method includes the following steps: S1. Use the through-wall radar to detect targets in the area to be measured, and receive multi-channel echo signals corresponding to multiple apertures; S2. The aperture domain data of different apertures are obtained from the channel echo signals to form multiple sub-aperture data groups, and the full-aperture data corresponding to the multi-channel echo signals and each sub-aperture data group are weighted and imaged respectively, and then the weighted imaging results are compared. The imaging data signal after the similar part in the imaging result has been optimized and processed; the device includes a radar detection module and a signal optimization processing module; the invention has the advantages of simple implementation method, low cost, real-time signal processing while suppressing clutter, and good optimization performance , High efficiency and other advantages.

Description

technical field [0001] The present invention relates to the technical field of radar signal processing, in particular to a method and device for optimizing and processing through-wall radar signals. Background technique [0002] The through-wall radar uses the penetrability and transmission characteristics of electromagnetic waves to detect the area behind the wall through non-metallic media such as walls. Therefore, it is widely used in military and civilian fields such as urban street fighting, anti-terrorism struggle, and post-disaster rescue. In the process of through-wall radar detection, various reflections, scattering and refraction will occur when electromagnetic waves propagate inside a closed building, resulting in large side lobes, grating lobes and multipath interference in the echo signal, resulting in false alarms. This in turn affects the accurate detection and judgment of targets in buildings. Therefore, for the detection signal of through-wall radar, it is ...

AI Technical Summary

Problems solved by technology

However, the above radar processing method is based on the multipath mechanism to achieve multipath suppression, which needs to rely on model analysis and a large number of calculation processes. The implementation is complex, costly and inefficient, and is not suitable for occasions with high real-time requirements.

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