Research on preprocessing method of UWB radar life detection signal

Youxin Zhao; Qingjie Qi; Huifeng Cheng; Lifeng Sun; Jingwen Zhang

doi:10.1117/12.2640270

9 May 2022 Research on preprocessing method of UWB radar life detection signal

Youxin Zhao, Qingjie Qi, Huifeng Cheng, Lifeng Sun, Jingwen Zhang

Proceedings Volume 12252, International Conference on Biometrics, Microelectronic Sensors, and Artificial Intelligence (BMSAI); 122520C (2022) https://doi.org/10.1117/12.2640270
Event: International Conference on Biometrics, Microelectronic Sensors, and Artificial Intelligence (BMSAI), 2022, Guangzhou, China

Abstract

In order to improve the signal-to-noise ratio of ultra-wideband radar life detection echo signals, analyze the causes and types of ultra-wideband radar signal noise, build echo signal models in real measurement environments, and study various mechanisms for dealing with noise. Taking a human body with vital signs as an example, the radar signal echoes at a distance of 1m, 2m and 4m from the radar are tested, the radar signal waves are obtained, and the noise is targeted according to the type of clutter. The results show that the useless signal in the original echo matrix signal is reduced and the signal-to-noise ratio is improved. The local normalization method and automatic gain control method are used to automatically enhance the processed signal strengthened before.

Citation Download Citation

Youxin Zhao, Qingjie Qi, Huifeng Cheng, Lifeng Sun, and Jingwen Zhang "Research on preprocessing method of UWB radar life detection signal", Proc. SPIE 12252, International Conference on Biometrics, Microelectronic Sensors, and Artificial Intelligence (BMSAI), 122520C (9 May 2022); https://doi.org/10.1117/12.2640270

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