Open Access

Detection and Parameter Estimation of Multicomponent LFM Signal Based on the Cubic Phase Function

EURASIP Journal on Advances in Signal Processing20082008:743985

https://doi.org/10.1155/2008/743985

Received: 27 September 2007

Accepted: 5 March 2008

Published: 4 May 2008

Abstract

A new algorithm for the detection and parameters estimation of LFM signal is presented in this paper. By the computation of the cubic phase function (CPF) of the signal, it is shown that the CPF is concentrated along the frequency rate law of the signal, and the peak of the CPF yields the estimate of the frequency rate. The initial frequency and amplitude can be obtained by the dechirp technique and fast Fourier transform. And for multicomponent signal, the CLEAN technique combined with the CPF is proposed to detect the weak components submerged by the stronger components. The statistical performance is analyzed and the simulation results are shown simultaneously.

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Authors’ Affiliations

(1)
Harbin Institute of Technology, Research Institute of Electronic Engineering Technology

Copyright

© Y.Wang and Y.-C. Jiang 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.