Prof. Aly E. Fathy Profile

Prof. Aly E. Fathy

at Univ of Tennessee Knoxville

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Proceedings Article | 23 May 2013 Paper

UWB micro-doppler radar for human gait analysis using joint range-time-frequency representation

Yazhou Wang, Aly Fathy

Proceedings Volume 8734, 873404 (2013) https://doi.org/10.1117/12.2015642

KEYWORDS: Radar, Gait analysis, Sensors, Doppler effect, Antennas, Radar sensor technology, Receivers, Prototyping, Picosecond phenomena, Field programmable gate arrays

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In this paper, we present a novel, standalone ultra wideband (UWB) micro-Doppler radar sensor that goes beyond simple range or micro-Doppler detection to combined range-time-Doppler frequency analysis. Moreover, it can monitor more than one human object in both line-of-sight (LOS) and through wall scenarios, thus have full human objects tracking capabilities. The unique radar design is based on narrow pulse transceiver, high speed data acquisition module, and wideband antenna array. For advanced radar post-data processing, joint range-time-frequency representation has been performed. Characteristics of human walking activity have been analyzed using the radar sensor by precisely tracking the radar object and acquiring range-time-Doppler information simultaneously. The UWB micro-Doppler radar prototype is capable of detecting Doppler frequency range from -180 Hz to +180 Hz, which allows a maximum target velocity of 9 m/s. The developed radar sensor can also be extended for many other applications, such as respiration and heartbeat detection of trapped survivors under building debris.

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