Method of Estimating Human Orientation Using Array Antenna

This paper presents a method that uses microwaves to estimate human body orientation. The antennas are arranged to surround the human and observe vital signs such as respiration and heart beat from the microwaves reflected from the human. Since the signal reflected from the front of the human will fluctuate the most, mainly due to respiration, human body orientation is estimated by finding the antenna that captures the largest rhythmic fluctuation. In experiments with three subjects, the median value of angular error of human orientation was 9.01∼23.35°.

[1]  Nikolaos Papanikolopoulos,et al.  Multi-Camera Human Activity Monitoring , 2008, J. Intell. Robotic Syst..

[2]  Naoki Honma,et al.  Localizing multiple target using bistatic MIMO radar in multi-path environment , 2014, 2014 IEEE International Workshop on Electromagnetics (iWEM).

[3]  Rob Miller,et al.  3D Tracking via Body Radio Reflections , 2014, NSDI.

[4]  Jenshan Lin,et al.  A microwave radio for Doppler radar sensing of vital signs , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[5]  A. Hakhoumian,et al.  PORTABLE NON-CONTACT MICROWAVE DOPPLER RADAR FOR RESPIRATION AND HEARTBEAT SENSING , 2012 .

[6]  Naoki Honma,et al.  Estimating Living-Body Location Using Bistatic MIMO Radar in Multi-Path Environment , 2015, IEICE Trans. Commun..

[7]  N. Noury,et al.  Monitoring behavior in home using a smart fall sensor and position sensors , 2000, 1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology. Proceedings (Cat. No.00EX451).

[8]  M. Llobera.  Building Past Landscape Perception With GIS: Understanding Topographic Prominence , 2001 .

[9]  J.C. Lin.  Noninvasive microwave measurement of respiration , 1975, Proceedings of the IEEE.

[10]  Naoki Honma,et al.  Experimental Evaluation of Estimating Living-Body Direction Using Array Antenna for Multipath Environment , 2014, IEEE Antennas and Wireless Propagation Letters.

[11]  P. Stoica,et al.  MIMO Radar Signal Processing , 2008 .