Multipath Estimation for Localization and Tracking.
Abstract
The problem of localizing and tracking an underwater acoustically radiating source with measurements from a stationary passive array is discussed. The approach is to use the received signals to estimate range differences (RD's) and, in turn, estimate and track source locations. We develop closed-formed, least-squares, equation-error methods for 1) localizing and tracking a source in three dimensions with N = or > 3 RD measurements, 2) localizing and tracking a source in two dimensions (range and depth) with N = or > 2 RD measurements, and 3) tracking a source moving along a straight-line, constant-depth, constant-velocity path with the time history of one RD. Additionally, we show that these methods are nearly statistically efficient (i.e., when the RD estimates have finite variance, the average square deviation of the source location estimates from their true value is almost as small as possible).
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 03, 1987
- Accession Number
- ADA177644
Entities
People
- Benjamin Friedlander
- Jonathan Abel
- Khosrow Lashkari