Detection and parameter estimation of sawtooth linear frequency modulated continuous wave signal

被引：0
作者：
Zhu, Wentao [1 ]
Zheng, Jibin [1 ]
Su, Tao [1 ]
Zhu, Kairan [1 ]
机构：
[1] National Key Lab. of Radar Signal Processing, Xidian Univ.
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2013年 / 40卷 / 02期
关键词：
Cyclocorrelation; Parameter estimation; Signal detection; SLFMCW;
D O I：
10.3969/j.issn.1001-2400.2013.02.018
中图分类号：
学科分类号：
摘要：
Aiming at application of long time accumulation for the detection and parameter estimation of linear frequency modulated continuous wave (LFMCW), a novel method based on the joint zero frequency searching method and quasi-MTD method is proposed to detect the sawtooth LFMCW (SLFMCW) signal and estimate its parameters. Firstly, detection of the SLFMCW signal and estimation of its period are realized by use of the zero frequency searching method. And then, the quasi-MTD method based on cyclocorrelation is utilized to finish the estimation of phase parameters and initial time-offset. The estimation of the period, chirp-rate, initial frequency and initial time-offset can be effectively realized by the method, which has low computational complexity and can provide good estimation performance in a low signal-to-noise ratio (SNR) owing to long time accumulation. Computer simulations verify the effectiveness of the algorithm.
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页码：110 / 116
页数：6
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