| 摘要 |
<p>A method and an apparatus for passive determination of target parameters by directionally selective reception of sound waves emitted or transmitted from a target, by an arrangement (24) of underwater sound sensors of a sonar receiving installation from estimated bearing angles determined from estimated positions of the target, and bearing angles measured at the measurement point by the arrangement (24). A bearing angle difference between measured and estimated bearing angles is iteratively minimized and, when the minimum is reached, the target parameters are used for an optimized solution for outputting target position, course, range and/or velocity and they are updated during each processing cycle in a series of successive processing cycles. To estimate the reliability of this optimized solution, during each processing cycle a multiplicity of different target tracks Z(i,j) are calculated from possible solutions for the target parameters to be determined, specifically an assumed target course Cest, an assumed target range Rest and/or an assumed target velocity Vest. Associated bearing angles Best are assumed for each of the possible solutions, and the assumed bearing angles Best are used to calculate a quality measure.</p> |
