Non-parametric multiple channel detection in deep ocean noise

The generalized coherence (GC) estimate has been studied as a statistic for detection of a common signal on several noisy channels. Although the performance results have been documented for a white Gaussian signal in white Gaussian noise, no meaningful performance measurements have been presented for GC-based detection in colored noise. This paper examines the application of GC detectors in the presence of colored noise and, in particular, gives performance results for a GC detector in one of the prototypical scenarios for non-parametric multiple channel detection: detecting a common broadband signal in multiple channels of deep ocean noise.