Title :
Performance limits of a large passive array
Author :
Delaney, Pamela A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
Abstract :
The objective of this research is to determine the relative performance levels of several different detectors when the transmitted signal is propagated through the ocean and received by a large, passive array. The transmitted signal is narrowband with a Rayleigh envelope and known carrier frequency while the received signal is calculated by modeling the ocean as a waveguide with a realistic sound velocity profile. The contaminating noise is modeled as temporally independent and spatially dependent non-Gaussian noise. It is shown that the optimal Bayes detector and the locally optimal Bayes detector have similar performance levels if the received signal-to-noise ratio (SNR) is small enough. When the SNR becomes large, the performance levels of the two detectors are substantially different for small probabilities of error
Keywords :
Bayes methods; acoustic arrays; acoustic noise; array signal processing; signal detection; sonar; Rayleigh envelope; SNR; detectors; large passive array; locally optimal Bayes detector; modeling; narrowband signal; ocean transmitted signal; optimal Bayes detector; performance levels; sonar; sound velocity profile; spatially dependent nonGaussian noise; Acoustic noise; Acoustic propagation; Acoustic sensors; Acoustic waveguides; Detectors; Frequency; Narrowband; Oceans; Sensor arrays; Signal to noise ratio; Sonar detection;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342313
