Underwater Target Tracking Using Measurements from a Linear Array of Omnidirectional Acoustic Elements.
Abstract
Tracking of underwater targets using measurements from a geometrically linear array of omnidirectional acoustic elements is a nonlinear estimation problem. The technique constructed and used in this report is an iterative, least-squares algorithm which uses the modified Gauss-Newton method. In this algorithm the search direction is found by applying a Householder transformation to the Gauss-Newton equations; the size of the step in this direction is found by minimizing a polynomial approximation to the performance index. The results show: the sign on the estimate of the target's depth cannot be uniquely determined, the Gauss-Newton method works as well as its modified version for these experiments, the problem is singular on the first leg, and the initialization of the algorithm influences convergence. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 22, 1981
- Accession Number
- ADA107070
Entities
Organizations
- Naval Underwater Systems Center