Fast passive source localization in range-rate with tilted line arrays [shallow water environment]

We present a new approach for estimating the velocity of a source based on a model of differential phase change of the modes in a shallow-water environment. This approach is easily implementable and computationally fast compared to our previous approaches. We use the velocity and bearing estimates of a strong interferer to suppress it in order to detect and localize weaker sources. Range-rate localization is particularly effective in discriminating sources located in the near-endfire region, where conventional beamforming has the poorest discrimination.