Statistical Analysis of the Nonhomogeneity Detector for Non-Gaussian Interference Backgrounds
AIR FORCE RESEARCH LAB HANSCOM AFB MA SENSORS DIRECTORATE
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We derive the nonhomogeneity detector NHD for non-Gaussian interference scenarios and present a statistical analysis of the method. The non-Gaussian interference scenario is assumed to be modeled by a spherically invariant random process SIRP. We present a method for selecting representative homogeneous training data based on our statistical analysis of the NHD for finite sample support used in covariance estimation. In particular, an exact theoretical expression for the NHD test statistic probability density function PDF is derived. Performance analysis of the NHD is presented using both simulated data and measured data from the multichannel airborne radar measurement MCARM program. A performance comparison with existing NHD approaches is also included.
- Statistics and Probability
- Active and Passive Radar Detection and Equipment