Effect of Correlation on Signal Detection in Arctic Under-Ice Noise
Abstract
Signal detection in a large segment of non-Gaussian and non- stationary Arctic under-ice noise, which contains both high power narrow-band and impulsive components, is examined. It is shown that the correlation functions of sub-segments of data change significantly, and if ignored, can degrade the performance of a detector. For a false alarm probability of 0.05 and a known constant signal, the matched filter was on average 17.6% better than a detector designed assuming independent noise samples. It is also shown that pre- processing the data with an adaptive notch filter, then using the matched filter will result in a further improvement of about 6%. Additionally, the effect two different signal shapes have on the performance of the matched filter is examined. Keywords: Acoustic data; Underice acoustic detectors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1988
- Accession Number
- ADA203821
Entities
People
- J. B. Thomas
- P. A. Nielsen
Organizations
- Princeton University