Bearing error analysis of bearing-only positioning under time-delay of double quasi-stationary platforms
The cooperative detection of underwater double quasi-stationary platforms can realize bearings-only posi-tioning and tracking of underwater acoustic targets.Aiming at the problem that the detection time is not matched and the bearing measurement error is caused by the acoustic wave propagation delay of the target signal received by the two detec-tion platforms,according to the actual application scenario of the quasi-stationary platform,the target motion model and the two-dimensional geometric distribution of the detection space are established,and a bearing measurement error analysis model based on different time delay conditions is constructed.The maximum bearing measurement error results under differ-ent distribution scenarios of target and dual-platform are analyzed in detail.The physical meaning of the model is clear,intu-itive and simple.The simulation and measured experiment results verify the accuracy of the bearing measurement error mod-el,and the error distribution law of target bearing measurement under dual-platform detection delay is obtained.
万方数据
维普
