Waveform fusion for sonar detection and estimation

The selection of a proper transmitted sonar waveform is critical for target detection and parameter estimation. The focus here is on constant-frequency (CF) and chirp (LFM) waveforms, and it is readily seen that these have characteristics that are complementary, both with respect to their accuracies and in regard to their sensitivity to the blind zero-Doppler ridge. We hence explore the use of fused information from different waveforms: a fused system is not only more robust, but is also in some cases outright preferable.