A digital time correlative accumulation (II)——cross-correlative accumulation

The digital time cross-correlative accumulation scheme is described in this paper. The principle and the basic structure of the scheme are introduced first, the detection probability, false-alarm probability and input (S/N) are then analysed for some typical sonar systems. Superior performances have been proved to be true through theoretical estimations and experiments in sidte, another signal processing scheme of common sense for the complicated shallow-water acoustic channel is offered.