A Method for Estimating Chirp Rate of a Linear Frequency Modulated Signal

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Balkan Journal of Electrical and Computer Engineering
Volume:6 Issue:1
A Method for Estimating Chirp Rate of a Linear Frequency Modulated Signal

A Method for Estimating Chirp Rate of a Linear Frequency Modulated Signal

Pages : 9-12

View : 17 | Download : 6

Publication Date : 2018-02-15

Article Type : Research Paper

Abstract :This paper proposes a fast and accurate chirp-rate estimation algorithm in noisy environment. The proposed method searches the inverse maximum magnitude of the angle-sweep fractional Fourier domain and finds the optimum angle, which provides an estimate for the chirp-rate. In order to accelerate the search process, we propose to use the Fibonacci search algorithm, which provides a sub-optimal search scheme in terms of computational complexity. Simulation results show the efficiency of the proposed algorithm.
Keywords : Fractional Fourier transform, chirp rate, linear frequency modulated signals, estimation, Cramer Rao lower bound

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