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  • Research Article
  • Open Access

Adaptive Algorithm for Chirp-Rate Estimation

  • 1Email author,
  • 2,
  • 1 and
  • 3
EURASIP Journal on Advances in Signal Processing20092009:727034

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

  • Received: 5 March 2009
  • Accepted: 26 June 2009
  • Published:

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.

Keywords

  • Confidence Interval
  • Radar
  • Information Technology
  • Quantum Information
  • Sonar

Publisher note

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Authors’ Affiliations

(1)
Electrical Engineering Department, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro
(2)
Gipsa Lab, INP Grenoble, 38402 Grenoble, France
(3)
Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA

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