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This paper focuses on the feasibility of tracking micro-motion with coherent Ultra-Wide Band Pulsed Radar. The proposed micro-motion detection principle consists in measuring the phase difference of the Ultra-Wide Band carrier waveform between the transmitted and the received pulse signals. Those signals are acquired directly on the working frequency band, with equivalent time sampling techniques. An experiment based on a double staged equivalent time sampling is set to emulate real-time acquisition with an oscilloscope. This experiment shows clear high precision ranging capabilities by revealing a millimeter order woofer displacement equal to λ⁄10. This reveals a great potential in phase tracking and confirms the choice to go further on the development of a real time radar. This platform provides refreshing rates of 2 ms, required to developed effective phase detection algorithms for micro-motion detection and tracking of human targets, especially for through-the-wall radar applications when humans remain in static position.
Vincent Mérelle,Alain Gaugue,Georges Louis, andMichel Ménard
"Through-the-wall UWB pulse radar for micro-motion detection", Proc. SPIE 9993, Millimetre Wave and Terahertz Sensors and Technology IX, 999303 (21 October 2016); https://doi.org/10.1117/12.2242823
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Vincent Mérelle, Alain Gaugue, Georges Louis, Michel Ménard, "Through-the-wall UWB pulse radar for micro-motion detection," Proc. SPIE 9993, Millimetre Wave and Terahertz Sensors and Technology IX, 999303 (21 October 2016); https://doi.org/10.1117/12.2242823