{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:21:57Z","timestamp":1760242917173,"version":"build-2065373602"},"reference-count":48,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2016,11,6]],"date-time":"2016-11-06T00:00:00Z","timestamp":1478390400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51404165, 61401299, 61601319, 41604127"],"award-info":[{"award-number":["51404165, 61401299, 61601319, 41604127"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004480","name":"Natural Science Foundation of Shanxi Province","doi-asserted-by":"publisher","award":["201601D011047"],"award-info":[{"award-number":["201601D011047"]}],"id":[{"id":"10.13039\/501100004480","id-type":"DOI","asserted-by":"publisher"}]},{"name":"International Science &amp; Technology Cooperation Program of China","award":["2014DFA50870"],"award-info":[{"award-number":["2014DFA50870"]}]},{"name":"Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A hybrid life detection radar system which transmits a wideband chaotic signal containing an embedded single-tone is proposed. The chaotic signal is used for target localization by the time-domain correlation method and synthetic aperture technique, and the single-tone signal is used to measure the frequencies of breathing and heartbeat based on an on-chip split-ring integrated sensor and Michelson interference principle. Experimental results in free space and in through-wall scenarios demonstrate that the system can realize human detection and localization simultaneously with high range resolution, high sensitivity, and large dynamic range without complex signal processing. The range resolution is about 10 cm, and the dynamic range is 35 dB for the respiration signal detection and 25 dB for the heartbeat signal detection. Due to its good immunity to interference\/jamming and high spectrum efficiency, the proposed system is suitable for post-disaster rescue, elder\/infant\/patient vitality monitoring, and anti-terrorism enforcement applications.<\/jats:p>","DOI":"10.3390\/s16111866","type":"journal-article","created":{"date-parts":[[2016,11,7]],"date-time":"2016-11-07T10:36:50Z","timestamp":1478515010000},"page":"1866","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Simultaneous Life Detection and Localization Using a Wideband Chaotic Signal with an Embedded Tone"],"prefix":"10.3390","volume":"16","author":[{"given":"Li","family":"Liu","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chaoyi","family":"Guo","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9296-8278","authenticated-orcid":false,"given":"Jingxia","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hang","family":"Xu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianguo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bingjie","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,11,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1109\/10.817625","article-title":"Microwave life-detection system for searching human subjects under earthquake rubble or behind barrier","volume":"47","author":"Chen","year":"2000","journal-title":"IEEE Trans. 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