锯齿波线性调频连续波信号的检测与参数估计

doi:10.3969/j.issn.1001-2400.2013.02.018

Abstract

Abstract:

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.

Key words: SLFMCW, signal detection, parameter estimation, cyclocorrelation

CLC Number:

TN971.+1

ZHU Wentao;ZHENG Jibin;SU Tao;ZHU Kairan. Detection and parameter estimation of sawtooth linear frequency modulated continuous wave signal[J].J4, 2013, 40(2): 110-116.

References

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

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