Title :
Wideband array signal processing with alpha-stable distributions
Author :
Tsakalides, Panagiotis ; Nikias, L.
Author_Institution :
Signal & Image Process. Inst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
The importance of extending the statistical array signal processing methodology to what we call the alpha-stable framework is apparent. First, scientists and engineers have started to appreciate infinite moments and the elegant scaling and self-similarity properties of stable distributions. Additionally, real life applications exist in which impulsive channels tend to produce large-amplitude, short-duration interference more frequently than Gaussian channels do. The stable law has been shown to successfully model noise over certain impulsive channels. We propose new robust techniques for wideband source detection and localization in the presence of noise modeled as a complex isotropic stable process
Keywords :
direction-of-arrival estimation; interference (signal); random processes; signal detection; stability; statistical analysis; telecommunication channels; alpha-stable distributions; complex isotropic stable process; impulsive channels; impulsive interference; infinite moments; large amplitude interference; noise; robust techniques; scaling properties; self-similarity properties; short duration interference; stable law; statistical array signal processing; subspace based bearing estimation; wideband DOA estimation; wideband array signal processing; wideband source detection; wideband source localization; 1f noise; Array signal processing; Delay; Image processing; Interference; Random processes; Sensor arrays; Signal processing; Wideband; Working environment noise;
Conference_Titel :
Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-2489-7
DOI :
10.1109/MILCOM.1995.483286