Impulse Radio Ultra-Wideband Communications for Localization and Tracking of Human Body and Limbs Movement for Healthcare Applications
Impulse Radio Ultra-Wideband Communications for Localization and Tracking of Human Body and Limbs Movement for Healthcare Applications
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DOI：
10.1109/tap.2017.2759841
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发表时间：
2017-12-01
影响因子：
5.7
通讯作者：
Alomainy, Akram
中科院分区：
文献类型：
--
作者：
Bharadwaj, Richa;Swaisaenyakorn, Srijittra;Alomainy, Akram
准确、精确的四肢和人体运动跟踪在各种医疗保健应用中具有重要的技术重要性。由于其固有的特性，脉冲无线电超宽带技术（IR-UWB）的使用最近在高精度定位方面引起了人们的兴趣。本文介绍了基于 IR-UWB 技术、使用紧凑且经济高效的体戴天线对室内人体定位和 3D 肢体运动跟踪进行的实验研究和分析。使用路径损耗幅度、多径分量数量、均方根延迟扩展、信号幅度和峰度等参数详细分析了以身体为中心的无线信道特性，重点是区分视距 (LOS) 和非视距情况。还针对不同的活动和天线位置计算接收信号的保真度，以研究 UWB 天线放置在人体上时的脉冲保持特性。本文报告的结果使用简单且经济高效的技术，在 0.5 至 2.5 厘米范围内具有高达 90% 的定位精度，这与标准光学运动捕捉系统获得的结果相当。
Accurate and precise motion tracking of limbs and human subjects has technological importance in various healthcare applications. The use of impulse radio-ultra wideband technology (IR-UWB) technology due its inherent properties is of recent interest for high-accuracy localization. This paper presents experimental investigations and analysis of indoor human body localization and tracking of limb movements in 3-D based on IR-UWB technology using compact and cost-effective body-worn antennas. The body-centric wireless channel characterization has been analyzed in detail using parameters such as path loss magnitude, number of multipath components, rms delay spread, signal amplitude, and Kurtosis with the main focus to differentiate between line-of-sight (LOS) and non-LOS situations. Fidelity of the received signal is also calculated for different activities and antenna positions to study the pulse preserving nature of the UWB antenna, when it is placed on the human body. The results reported in this paper have high localization accuracy with 90% in the range from 0.5 to 2.5 cm using simple and cost-effective techniques which is comparable to the results obtained by the standard optical motion capture system.