Title :
A novel CFAR tonal detector using phase compensation
Author :
Wang, Qing ; Wan, Chun Ru
Author_Institution :
Sch. of EEE, Nanyang Technol. Univ., Singapore
Abstract :
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
Keywords :
Gaussian noise; discrete Fourier transforms; signal detection; statistical analysis; CFAR tonal detector; DFT; GLRT; Gaussian noise; constant false alarm rate; discrete Fourier transform; generalized likelihood ratio test; hypothesis test; leakage; phase compensation; sinusoidal signal detection; statistical characteristics; Discrete Fourier transforms; Gaussian noise; Phase detection; Phase frequency detector; Radar detection; Signal detection; Signal processing; Sonar detection; Testing; Working environment noise; Constant false alarm rate (CFAR); discrete Fourier transform (DFT); generalized likelihood ratio test (GLRT); hypothesis test; leakage; phase compensation; statistical characteristics;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2004.836583
