| dc.description.abstract | Multistatic sonars introduce new problems to the modeller such as mutual interference from multiple sources and variable target aspect in a background of range-dependent bistatic reverberation. A multistatic sonar performance model, SUPREMO, has been developed at SACLANTCEN. Its capability includes propagation, target echoes, reverberation and noise, plotted as a function of delay time and bearing, and in equivalent map projection. A modular propagation section makes it possible to separate the difficulties of propagation modelling (ray/ mode, range-dependence, etc) from those of scatter-area-accounting in delay-time and bearing (computational efficiency, bottom slope, scattering law, etc). Several novel trade-offs of efficiency versus fidelity are discussed. Special attention is paid to the problems of interference from multiple sources firing in sequence, target aspect dependence from multiple receivers, mixed FM and CW, mismatched source and receivers, multiple displays (one for each bistatic pair), and how to combine the displayed information. | |
