Modeling Non-Rayleigh Reverberation
Abstract
Non-Rayleigh reverberation adversely affects the detection performance of submarine and mine hunting sonar systems by increasing the probability of false alarm or decreasing the probability of detection. Prediction of sonar performance in non-Rayleigh reverberation and the design of appropriate target detection algorithms requires accurate statistical modeling of the observed reverberation. This report presents several standard statistical models for non-Rayleigh reverberation along with methods for estimating their parameters and choosing the model with the best fit. Of the models considered, the Rayleigh mixture model was seen to provide the most flexibility in representing different types of non-Rayleigh reverberation. Real data were used to demonstrate this analysis process, including the examination of theoretical receiver operating characteristic (ROC) curves based on non-Rayleigh reverberation. Matlab subroutines created for parameter estimation, distribution function evaluation, and random number generation are included in an annex.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1997
- Accession Number
- AD1119928
Entities
People
- Douglas A. Abraham
Organizations
- NATO