|Table of Contents|

Comment on "Multi-period Ambiguity Function of LFMCW Radar Signal"


Research Field:
Publishing date:


Comment on "Multi-period Ambiguity Function of LFMCW Radar Signal"
ZHOU Xin-gang1ZHAO Hui-chang1GAO Zhen-ru12
1.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China;2.Institute of Engineering Corps,PLA University of Science and Technology,Nanjing 210018,China
linear frequency modulated continuous wave periodic ambiguity function autocorrelation function ranges velocity
There is a wrong statement in Guo Lei’s paper "Multi-period Ambiguity Function of LFMCW Radar Signal" which is about the single period ambiguity function of linear frequency modulated continuous wave(LFMCW) radar signal,its single period and multi-period range autocorrelation and ambiguity diagram.According to the single period ambiguity function(SPAF) of the cycle modulated continuous wave(CW) signal,the SPAF of the chirp-CW is deduced,and the period ambiguity function(PAF) of the chirp-CW is obtained by the relationship between SPAF and PAF.The SPAF or the multi-PAF of LFMCW has odd number of intact "knife-edge" and two "half-knife-edge" through simulation.The periodic velocity autocorrelation function is the N(N is the periodic number) times compression of the single velocity autocorrelation function of the LFMCW signal,and the compression times is the periodic number.The periodic range autocorrelation function can be obtained by copying N times of the single periodic range autocorrelation function along the time delay axis.


[ 1] StoveA G. L inear FMCW radar techn iques[ J]. IEEE Proceed ing s-F, 1992, 139( 5) : 343- 350.
[ 2] Kehrbeck J, H e idr ich E, W iesbeckW. A nove l and inexpensive sho rt range FM-CW rada r design [ A ]. Pro ceedings of 1992 IEEE Rada r Interna tiona l Conference[ C ]. Piscataw ay, USA: IEEE Press, 1992: 288 - 291.
[ 3] Phillip E P. Detecting and class ify ing low probability o f intercept rada r [M ]. Boston: A rtech H ouse Inc, 2004: 73- 76; 60- 62.
[ 4] Sinsky A I, W ang C P. Standardization o f the de fin-i tion o f the radar am bigu ity function[ J] . IEEE Transactions on Ae rospace and E lectron ic System s, 1974, 10( 4): 532- 533.
[ 5] 杨建宇. LFMCW 雷达信号模糊函数分析[ J]. 信号处理, 2002, 18( 1): 39- 42.
[ 6] 郭磊, 杨中海. LFMCW 雷达信号多周期模糊函数分析[ J]. 电子科技大学学报( 自然科学版), 2004, 35( 5): 543- 546.
[ 7] Levanon N, Freedom A. Per iodic am bigu ity function of CW s igna ls w ith pe rfect per iodic autocorrelation [ J]. IEEE T ransactions on A erospace and E lectronic System s, 1992, 28( 2): 387- 395.
[ 8] 郑君里, 应启珩, 杨为理. 信号与系统[M ]. 北京: 高等教育出版社, 2003: 10- 11.


Last Update: 2012-11-02