Through-Wall Radar Imaging Method Based on Weighted Phase Statistical Parameters

Abstract

The invention provides a through-wall radar imaging method based on phase statistical parameter weighting. According to the technical scheme, the through-wall radar imaging method based on phase statistical parameter weighting comprises the steps that step one, phase compensation is conducted on echo data, so that the echo data in an imaging object region after compensation are obtained; step two, a phase statistical parameter corresponding to each pixel point in the imaging object region is calculated; step three, imaging processing is conducted through a standard back-projection imaging algorithm, so that an imaging object region image is obtained; step four, each pixel point of the imaging object region image is multiplied by one phase statistical parameter corresponding to the pixel point, so that an improved imaging object region image is obtained. According to the through-wall radar imaging method based on phase statistical parameter weighting, phase statistical features of the echo data of a through-wall radar are reasonably used, weighting processing is conducted on a through-wall radar image, so that the quality of the through-wall radar image is improved, calculation is simple, realization is easy, and the through-wall radar imaging method based on phase statistical parameter weighting can be used for actual engineering design and signal processing.

Description

technical field [0001] The invention belongs to the technical field of through-wall radar imaging, and proposes a through-wall radar imaging method based on phase statistical parameter weighting to improve the through-wall radar imaging quality. Background technique [0002] Wall-penetrating radar usually adopts stepping frequency system, emits low-frequency electromagnetic waves with good penetrability, can penetrate obstacles such as walls, and detect hidden targets. Wall radar imaging is an important development direction of through-wall radar. Through-wall radar imaging is to obtain high range resolution while ensuring penetration by transmitting low-frequency ultra-wideband signals. Using array antennas can achieve high azimuth resolution while realizing fast azimuth scanning. [0003] High-precision imaging of targets behind walls is the key to improving the detection performance of through-wall radars. However, on the one hand, there are inevitably phenomena such as...

AI Technical Summary

Problems solved by technology

Usually, the echo of through-wall radar is very weak and the signal-to-noise ratio is low. The echo is processed first, and then the processed echo is used for imaging. At present, no method to realize through-wall radar imaging based on this idea has been found.

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