[1] BUGAEV A S, VASIL′ EV I A, IVASHOV S I, et al. Radar methods of detection of human breathing and hearbeat［J］. Journal of Communications Technology and Electronics, 2006, 51(10): 1154-1168.

[2] LI Changzhi, CUMMINGS J, LAM J, et al. Radar remote monitoring of vital signs［J］. IEEE Microwave Magazine, 2009, 10(1): 47-56.

[3] LAZARO A, GIRBAU D, VILLARION R. Analysis of vital signs monitoring using an IRUWB radar［J］. Progress in Electromagnetics Research, 2010, 100: 265-284.

[4] GAUGUE A C, POLIMNO J L. Overview of current technologies for throughthewallsurveillance［C］. SPIE,2005, 5989: 59891H1.

[5] LU Guohua, YANG Guosheng, WANG Jianqi, et al. The study on detection of the life signals of human subject based on micropower UWB radar［J］. Chinese Medical Equipment Jounal, 2005, 26(2): 15-18.

[6] WANG Yuandong, WANG Jianqi, LU Guohua, et al. Separation of respiration and heartbeat signal in noncontact life parameters detecting based on RLS algorithm［J］. Chinese Medical Equipment Jounal, 2009, 30(3): 25-27.

[7] DAI Shun, ZHU Fang, XU Yanyun, et al. Vital signal detection method based on principal component analysis and empirical mode decomposition for ultra wideband radar［J］. Acta Electronica Sinica, 2012, 40(2): 344-349.

[8] PAVLOV S N, SAMKOV S V. Algorithm of signal processing in ultrawideband radar designed for remote measuring parameter of patient' s cardiac activity［A］. 2nd International Workshop on Ultrawideband and Ulatrashort Impulse Signal［C］. IEEE, 2004: 205-207.

[10] MOU Miaohui, ZHU Guofu, HE Feng, et al. A clutter suppression method for detecting micromotion features of static human behind the wall［J］. Electronic Technology, 2010, 37(2): 19-21.

[11] FEI Xiangyu, WANG Chunhe, HUANG Suzhen, et al. Extraction and discriminant of noncontact life parameter signal based on radar［J］. Modern Electronics Technique, 2009, 296(9): 38-40.

[12] CHEN K M, HUANG Yong, ZHANG Jianping. Microwavelifedetection systems for searching human subjects under earthquake rubble or behind barrier［J］. IEEE Trans Biomed Eng, 2000, 47(1): 105-114.

[13] YOU Linru, WU Qingjia, WEN Xiaoqin. Technology of throughthe wall surveillance based on superlowfrequency electromagnetic wave［J］. Transducer and Microsystem Technologies, 2008, 27(6): 24-26, 30.

[15] ZHANG Zhen, LIU Fang. Application of wavelet analysis technique in the signal denoising of life sign detection［J］. Physics Procedia, 2012, 24: 21242130.