Parameter Estimation of LFMCW Signals Based on Improved SM Method

doi:10.16182/j.issn1004731x.joss.201809007

Abstract

Abstract: The parameter estimation of linear frequency modulation continuous wave (LFMCW) signal is a research hotspot in electronic reconnaissance systems. In this paper, the time frequency distribution feature of LFMCW signals is studied first. Based on the improved S-method (SM), an algorithm for parameter estimation of LFMCW signals is proposed. It uses short-time Fourier transform (STFT) to calculate the SM with adaptive window width, which can suppress the crossterm interferences and improve the time-frequency resolution. Theoretical analysis and simulation experiment results demonstrate the validity of the proposed algorithm under low SNR.

Key words: linear frequency modulated continuous wave signal, time frequency distribution, parameter estimation, S-method

CLC Number:

TN971

Jiang Li, Zhou Junni, Yang Runling, Liu Li. Parameter Estimation of LFMCW Signals Based on Improved SM Method[J]. Journal of System Simulation, 2018, 30(9): 3283-3287.

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