Title :
Effect of course maneuvers on bearings-only range estimation
Author :
Fawcett, John A.
Author_Institution :
Ocean Acoust., Defence Res. Establ. Pacific, Victoria, BC, Canada
Abstract :
The Cramer-Rao lower bound (CRLB) is used to examine the relative merits of tracking strategies in bearings-only target motion analysis. A formula is derived for the expected range error from a maximum-likelihood estimator (MLE) for the long-range situation. Monte Carlo simulations, with respect to the measurement noise, are used to show that for small amounts of noise the variance of the MLE range estimate follows the CRLB. It is also shown that there are often broad ranges of course changes for which acceptable ranging solutions can be found and large intervals of ownship course changes that should be avoided for target-motion analysis (TMA) range estimates.<>
Keywords :
Monte Carlo methods; boundary-value problems; errors; estimation theory; military systems; radar theory; tracking; Cramer-Rao lower bound; Monte Carlo simulations; bearings-only range estimation; course changes; course manoeuvre; maximum-likelihood estimator; measurement noise; ownship course changes; range error; ranging solutions; target motion analysis; tracking strategies; Apertures; Array signal processing; History; Least squares approximation; Maximum likelihood estimation; Motion analysis; Motion estimation; Noise measurement; Sea measurements; Target tracking;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
