A New LFM-Signal Detector Based on Fractional Fourier Transform

EURASIP Journal on Advances in Signal Processing 2010, 2010:876282 doi:10.1155/2010/876282

Published: 12 July 2010

Abstract

New LFM-signal detectors formulated by the integration of the 4th-power modulus of the fractional Fourier transform are proposed. They have similar performance to the modulus square detector of Radon-ambiguity transform because of the equivalence relationship between them. But the new detector has much lower computational complexity in the case that the number of the searching angles is far less than the length of the signal. Moreover, it is proved that the new signal detector can be generalized to the integration of the nth-power () modulus of the fractional Fourier transform via mathematical derivation. Computer simulation results have confirmed the effectiveness of the proposed detector in LFM-signal detection.

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