Performance of Constrained Estimation for Tracking with a Linear Array
Abstract
This paper addresses passive contact tracking using measurements from a perturbed multiple element linear array. Time delay measurements of ray path range differences between array sensors are considered where sensor positions are perturbed off the mean array axis. Estimator performance is analyzed and it is shown that under large range-to baseline conditions, uncertain array position can yield unacceptable solutions. Specifically, velocity estimates are shown to be particularly sensitive to the rate of change in array shape. A method utilizing a speed constraint is proposed for compensation or reduction of estimation bias. To achieve this, general inequality constraints are incorporated into an iterative least squares estimator, and performance is demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1985
- Accession Number
- ADA175244
Entities
People
- Antonio A. Magliaro
- John G. Baylog
- Kai F. Gong
- Sherry E. Hammel
Organizations
- Naval Underwater Systems Center