Phase Estimation Error of a PSK Underwater Acoustic Signal in Presence of Multipath and Volume Scattering

Mathematical approach has been used to model the received phase encoded signal with swept carrier [1] in underwater acoustic medium with multipath and volume scattering. By splitting the mathematical model of the received signal into three components at the receiver's pre-detection point (useful signal, error due to multipath and error due to volume scattering), the influence of each component on the accuracy of the differential phase estimation was evaluated analytically in well controlled propagation medium. The modeling results are consistent with experimental results during deep water trials.