Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array.
It is a major challenge to search for survivors after chemical or nuclear leakage or explosions. At present, biological radar can be used to achieve this goal by detecting the survivor's respiration signal. However, owing to the random posture of an injured person at a rescue site, the radar wa...
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doaj-785d37a2fbf94bed9f5814849e936f802020-11-24T20:50:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01114e015220110.1371/journal.pone.0152201Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array.Chuantao LiFuming ChenFugui QiMiao LiuZhao LiFulai LiangXijing JingGuohua LuJianqi WangIt is a major challenge to search for survivors after chemical or nuclear leakage or explosions. At present, biological radar can be used to achieve this goal by detecting the survivor's respiration signal. However, owing to the random posture of an injured person at a rescue site, the radar wave may directly irradiate the person's head or feet, in which it is difficult to detect the respiration signal. This paper describes a multichannel-based antenna array technology, which forms an omnidirectional detection system via 24-GHz Doppler biological radar, to address the random positioning relative to the antenna of an object to be detected. Furthermore, since the survivors often have random body movement such as struggling and twitching, the slight movements of the body caused by breathing are obscured by these movements. Therefore, a method is proposed to identify random human-body movement by utilizing multichannel information to calculate the background variance of the environment in combination with a constant-false-alarm-rate detector. The conducted outdoor experiments indicate that the system can realize the omnidirectional detection of random human-body movement and distinguish body movement from environmental interference such as movement of leaves and grass. The methods proposed in this paper will be a promising way to search for survivors outdoors.http://europepmc.org/articles/PMC4830530?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chuantao Li Fuming Chen Fugui Qi Miao Liu Zhao Li Fulai Liang Xijing Jing Guohua Lu Jianqi Wang |
spellingShingle |
Chuantao Li Fuming Chen Fugui Qi Miao Liu Zhao Li Fulai Liang Xijing Jing Guohua Lu Jianqi Wang Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. PLoS ONE |
author_facet |
Chuantao Li Fuming Chen Fugui Qi Miao Liu Zhao Li Fulai Liang Xijing Jing Guohua Lu Jianqi Wang |
author_sort |
Chuantao Li |
title |
Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. |
title_short |
Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. |
title_full |
Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. |
title_fullStr |
Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. |
title_full_unstemmed |
Searching for Survivors through Random Human-Body Movement Outdoors by Continuous-Wave Radar Array. |
title_sort |
searching for survivors through random human-body movement outdoors by continuous-wave radar array. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2016-01-01 |
description |
It is a major challenge to search for survivors after chemical or nuclear leakage or explosions. At present, biological radar can be used to achieve this goal by detecting the survivor's respiration signal. However, owing to the random posture of an injured person at a rescue site, the radar wave may directly irradiate the person's head or feet, in which it is difficult to detect the respiration signal. This paper describes a multichannel-based antenna array technology, which forms an omnidirectional detection system via 24-GHz Doppler biological radar, to address the random positioning relative to the antenna of an object to be detected. Furthermore, since the survivors often have random body movement such as struggling and twitching, the slight movements of the body caused by breathing are obscured by these movements. Therefore, a method is proposed to identify random human-body movement by utilizing multichannel information to calculate the background variance of the environment in combination with a constant-false-alarm-rate detector. The conducted outdoor experiments indicate that the system can realize the omnidirectional detection of random human-body movement and distinguish body movement from environmental interference such as movement of leaves and grass. The methods proposed in this paper will be a promising way to search for survivors outdoors. |
url |
http://europepmc.org/articles/PMC4830530?pdf=render |
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