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Adaptive Algorithm for Chirp-Rate Estimation


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.

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Correspondence to Igor Djurović.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Djurović, I., Ioana, C., Stanković, L. et al. Adaptive Algorithm for Chirp-Rate Estimation. EURASIP J. Adv. Signal Process. 2009, 727034 (2009).

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