Track Parameter Extraction Using Multipath Delay and Doppler Information

摘要

The goal of the multipath project is to develop techniques to make use of the multipath reflections of acoustic signals travelling in the ocean to localize and track radiating sources. There have been two main areas of study under this contract. First Area concentrates on the detection and estimation of the multipath (or differential) delays in the received signals; the second is the development of localization and tracking algorithms. Previous work on the multipath project included the development of differential delay estimation algorithms as well as theoretical studies resulting in bounds on the variance of estimating multipath delay. Bounds were also placed on the accuracy of estimating various so-called track parameters -- speed, depth, and range at closest approach of the target to the sensor array. Under the present contract, software was developed to estimate multipath delay using real or simulated data as input. Also under the present contract, tracking algorithms were developed.