Adaptive through-wall imaging method based on narrow-band system

Abstract

The present invention discloses an adaptive through-wall imaging method based on a narrow-band system, relates to the technology of the through-wall imaging, especially to a novel through-wall imagingtechnology based on the narrow-band system. The method comprises the steps of: employing a narrow-band system to scan an interested area along a plurality of angles, and employing Radon inverse transformation to perform rapid reconstruction of images; and finally, performing optimization of initial images through adoption of the adaptive image optimization algorithm to obtain a binary area reconstruction image. The adaptive through-wall imaging method can employ a very simple hardware system to achieve high-resolution through-wall imaging, has a good application value, high in environment applicability, high in image resolution and small in computing amount and is a novel through-wall imaging algorithm.

Description

technical field [0001] The invention relates to a through-wall imaging technology, in particular to a novel through-wall imaging technology based on a narrowband system. Background technique [0002] Through-wall imaging is a technology that uses electromagnetic waves of specific frequency bands to penetrate buildings and receive echo data reflected or transmitted by buildings, thereby realizing imaging of concealed targets or building layouts. Because it can pre-evaluate the layout of unknown areas and provide more information for decision makers, it has been more and more widely used in military and civilian applications such as anti-terrorism, street fighting, and disaster relief in recent years. Traditional wall-penetrating radars generally rely on ultra-wideband systems, MIMO arrays or synthetic aperture (SAR) systems for imaging, which leads to difficulties in hardware implementation and high hardware costs. On the other hand, traditional through-wall imaging algorith...

AI Technical Summary

Problems solved by technology

This scheme can effectively achieve high-resolution through-wall imaging when the electromagnetic wave attenuation coefficient of the object in the imaging area is the same. Objects with weak electromagnetic energy attenuation may be masked by objects with strong electromagnetic energy attenuation

Judging from the currently published literature, there is still little research on narrowband through-wall imaging algorithms for complex scenes.

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