An Interference Suppression Technique for Life Detection Using 5.75- and 35-GHz Dual-Frequency Continuous-Wave Radar
| Autor: | Sheng Li, Teng Jiao, Hao Lv, Yang Zhang, Zhao Li, Changzhi Li, Jianqi Wang, Guohua Lu, Xiao Yu |
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| Rok vydání: | 2015 |
| Předmět: |
Computer science
Pulse-Doppler radar Acoustics Geotechnical Engineering and Engineering Geology Interference (wave propagation) Radar lock-on Passive radar law.invention Adaptive filter Continuous-wave radar Space-time adaptive processing Radar engineering details Radar jamming and deception law Digital radio frequency memory Electrical and Electronic Engineering Radar display Radar Remote sensing Low probability of intercept radar |
| Zdroj: | IEEE Geoscience and Remote Sensing Letters. 12:482-486 |
| ISSN: | 1558-0571 1545-598X |
| Popis: | Life detection radar can detect human physiological signals (respiration, heartbeat, body movement, etc.) from a long distance away by penetrating nonmetal mediums (brick walls, ruins, etc.). However, interference is often caused by respiratory movements of the radar's operator when detecting vital signs of another human target. The detection accuracy can be significantly influenced by this kind of interference. In this letter, an experimental setup with a dual-frequency continuous-wave life detection radar is investigated. The system operates with different frequencies of 5.75 and 35 GHz. An adaptive filtering method is applied to suppress the interference caused by the operator's respiratory movements. Experimental results show that this method can effectively suppress respiratory interference and improve detection accuracy. |
| Databáze: | OpenAIRE |
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