| 摘要 |
The invention relates to a method and an apparatus for passive determination of target parameters by directionally selective reception of sound waves, emitted or transmitted from a target, from estimated bearing angles, determined from estimated positions of the target, and bearing angles measured at a measurement point. 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. To estimate the reliability of this optimized solution, during each processing cycle a multiplicity of different target tracks are calculated from. possible solutions for the target parameters. Associated bearing angles are assumed for each of these possible solutions, and the assumed bearing angles are used to calculate a quality measure along each of the assumed target tracks. A reliability level is determined from the distribution of the quality measure. |
