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The quality of through-wall-radar building layout image is affected seriously by the grating lobes when the element spacing of array is bigger than half a wavelength. Moreover, the image defocusing caused by the unknown wall penetration makes the problem worse. Based on the opposite characteristics of the low-frequency phase change of wall image area and the high-frequency phase change of grating...
This paper mainly deal with the degradation of the cross-correlated back-projection (CBP) imaging quality in the case of through-wall low signal-to-noise ratio (SNR), and an improved CBP algorithm is proposed to implement high-quality through-wall-radar imaging. Through accumulating all the sampling points rather than one sampling point of the cross-correlated target echoes into target location, the...
In the practical application of through-wall-radar imaging, the confronted wall is generally multi-layer and non-homogeneous, which defocuses the target image and displace target away from its true location. Therefore, the algorithm of image auto-focusing with the multi-layer and non-homogeneous wall is proposed in this paper. With respect to multiple array echoes, one best focusing time-delay is...
This paper mainly deals with target detection under heavy clutters in through-the-wall-radar imaging, and based on random sparse array, proposes an approach of multi-channel target cooperative detection with modified N-K detector applied to multiple single-channel images.
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