A Parameter Estimation Method for Poly-Phase Coded Signal Based on the Modified Fractional Fourier Transform
To estimate parameters of poly-phase coded radar signals, a modified Fractional Fourier transform (FrFT) is advanced. This algorithm employs Integrated Quadratic Phase function (IQPF) to estimate frequency rate with which the best degree for Frft is computed. Its computational cost is lower than that of Radon-Wigner transform (RWT) and Radon-Ambiguity transform (RAT). When the signal-to-noise ratio (SNR) is -7 dB, Simulations show its parameter estimation performance closes to the Cramer-Rao Lower Bounds (CRLB).
G. Y. Zhang et al., "A Parameter Estimation Method for Poly-Phase Coded Signal Based on the Modified Fractional Fourier Transform", Advanced Materials Research, Vols. 588-589, pp. 715-718, 2012