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

Year 2018, Volume: 6 Issue: 1, 9 - 12, 15.02.2018

Ahmet Serbes

https://doi.org/10.17694/bajece.369239

Cited By: 1

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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