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In this letter, we propose an isophase-based method for human life signal extraction using a stepped-frequency continuous-wave through-the-wall radar. Isophase is the line connected by points of the same phase value in the slow time range map and is a key feature to distinguish a stationary human from mechanical vibrating targets. First, the isophase is introduced and associated linearly with human...
It is a challenge to detect and identify the targets in the foliage-penetration environment. Radar is superior to other sensors in this poor visibility condition. The micro-Doppler signature is one of the most prominent information for target classification and identification in radar applications. In this paper, a complete procedure is proposed for human micro-Doppler signature extraction in the...
Stationary human micro-motion trajectory in slow time range domain provides more original motion information, including periodical respiration and heart beating, as well as random body movement and sudden body shaking, whose range often outstrips the periodical movement. Phase contour, amplitude contour and peak locus are all the represent of stationary human micro-motion trajectory. Due to the phase...
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