Simulation research on matched-mode processor in mismatch environmental

Matched-field processing is an underwater acoustics signal processing technology which combines oceanic physical acoustics technology and signal processing technology. The excellent performance of the matched field processing makes it a hot topic of research. Matched-mode processing is a matching approach working in mode space. Unlike matched-field processing, matched-mode processing can only extract the modes which have little relationship about the environment mismatch (whereas matched-field processing uses all modes). The MMP method reduces the sensitivity to environmental mismatches. In this paper, we have designed and carried out simulation experiments which show that more accurate positioning results can be obtained by carefully selecting the appropriate mode that is not sensitive to the environmental mismatch.