Accession Number:

ADA102073

Title:

Necessary and Sufficient Observability Conditions for Bearings-Only Target Motion Analysis

Descriptive Note:

Technical memo.

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT RI

Report Date:

1980-06-01

Pagination or Media Count:

16.0

Abstract:

The observability requirements for bearings-only target motion analysis TMA are rigorously established by solving a third-order nonlinear differential equation. Closed-form expressions are developed and subsequently used to specify necessary and sufficient conditions on own ship motion that ensure a unique tracking solution. It is shown that for certain types of maneuvers the estimation process remains unobservable, even when the associated bearing rate in non-zero. Such maneuvers are frequently overlooked in heuristic discussions of TMA observability, which may account for some common misconceptions regarding the characteristics of accepatable own ship motion

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE