Open Access

Adaptive Algorithm for Chirp-Rate Estimation

  • Igor Djurović1Email author,
  • Cornel Ioana2,
  • Ljubiša Stanković1 and
  • Pu Wang3
EURASIP Journal on Advances in Signal Processing20092009:727034

https://doi.org/10.1155/2009/727034

Received: 5 March 2009

Accepted: 26 June 2009

Published: 19 August 2009

Abstract

Chirp-rate, as a second derivative of signal phase, is an important feature of nonstationary signals in numerous applications such as radar, sonar, and communications. In this paper, an adaptive algorithm for the chirp-rate estimation is proposed. It is based on the confidence intervals rule and the cubic-phase function. The window width is adaptively selected to achieve good tradeoff between bias and variance of the chirp-rate estimate. The proposed algorithm is verified by simulations and the results show that it outperforms the standard algorithm with fixed window width.

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Electrical Engineering Department, University of Montenegro
(2)
Gipsa Lab, INP Grenoble
(3)
Department of Electrical and Computer Engineering, Stevens Institute of Technology

Copyright

© Igor Djurović et al. 2009

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.