Signal Detection by Arrays in Noise Fields with Local Variations
Theron Usher · The Journal of the Acoustical Society of America · 1964
The signal-detection capabilities of an array that is essentially DIMUS in nature are analyzed for the situation in which the background-noise power from hydrophone to hydrophone is not the same. The signal to be detected is assumed to be a plane-wave random time function. The signal power at different hydrophones is assumed to be constant. The performance of the DIMUS system, with infinite clippers, is compared to that for a similar array with purely linear signal processing. Results indicate that the performance of the system with infinite clippers is generally superior on a signal-to-noise basis and on the basis of normalized signal output.