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A novel CFAR tonal detector using phase compensation

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2 Author(s)
Qing Wang ; Sch. of EEE, Nanyang Technol. Univ., Singapore ; Chun Ru Wan

A novel tonal detector is presented in this paper. The detector uses phase compensation for detecting sinusoidal signal with unknown amplitude, frequency, and phase in complex Gaussian noise with unknown variance. We analyze the statistical properties of the discrete Fourier transform (DFT) of the observations and consider the leakage effect. Then we develop the detector by using generalized likelihood ratio test (GLRT). The new detector fully utilizes the phase information of the signal and achieves constant false alarm rate (CFAR) property. Theoretical analysis and simulation results show its improvement in detection performance

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:30 ,  Issue: 4 )