期刊
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
卷 67, 期 12, 页码 5348-5359出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMTT.2019.2939523
关键词
Frequency-modulated continuous-wave (FMCW) radars; mobile platform; synthetic-aperture radar (SAR); 2-D mapping; vital signs
资金
- National Natural Science Foundation of China [61871224, 81601568]
- Key Research and Development Plan of Jiangsu Province [BE2018729]
- Fundamental Research Funds for the Central Universities [30917011316]
Identifying and locating human targets in a complex environment with a mobile radar platform are important for urban rescue missions. This article introduces a precise phase-based human target 2-D synthetic-aperture radar (SAR) imaging and recognition system based on vital sign tracking with a mobile frequency-modulated continuous-wave (FMCW) radar. The solution first relies on FMCW phase detection to extract the vital sign signal of the human target. It then applies the SAR imaging method to obtain the 2-D imaging of the scene and labels human targets in the detected 2-D map without manual selection. Experiments are carried out for the azimuth human target recognition, multiple human targets recognition, and 2-D mapping in a complex outdoor environment. The results show that the proposed solution can capture not only the vital signs of human subjects but also the precise position information for 2-D mapping, demonstrating great potential for search and rescue applications.
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