A novel CFAR tonal detector using phase compensation

Author

Wang, Qing ; Wan, Chun Ru

Author_Institution

Sch. of EEE, Nanyang Technol. Univ., Singapore

Volume

30

Issue

4

fYear

2005

Firstpage

900

Lastpage

911

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;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/JOE.2004.836583

Filename

1593832