| 孙向前.多冗余被动定位系统精度分析[J].声学技术,2013,32(3):248~252 |
| 多冗余被动定位系统精度分析 |
| Accuracy of multi-redundancy passive localization system |
| 投稿时间：2012-05-12 修订日期：2012-08-04 |
| DOI：10.3969/j.issn1000-3630.2013.03.015 |
| 中文关键词: 被动式水声定位系统 分布式浮标阵 矢量传感器 多冗余 定位精度 |
| 英文关键词: passive underwater acoustic localization system vector sensor distributed buoy multi redundancy localization accuracy |
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| 中文摘要: |
| 针对基于二元矢量传感器浮标的被动式水声定位系统高精度定位区域小的问题, 采用增加浮标个数构成具有一定冗余度的测量阵, 提高了系统定位精度, 并且研究了冗余度对定位精度的影响。文中首先对基于纯方位测量的被动定位技术给出了多基阵解算算法的原理和解算步骤, 然后仿真了多种冗余度(6~12个浮标)和不同阵型下的被动定位系统的定位精度。结果显示定位误差分布与测向误差、目标所处位置、阵元个数以及测量阵阵型有关, 而且定位误差分布具有对称性。周边浮标组合在阵的中心区域定位精度较高, 对角组合可以弥补四边连线附近的低精度区域。该仿真结果在参加的系统海上试验中得到了验证。 |
| 英文摘要: |
| Aimed at the problem that the high-accuracy localization region of the passive underwater acoustic localization system with a two vector sensor bouy is small, the redundant survey array with more buoys is adopted to achieve high accuracy. Furthermore, the influence of redundancy on the accuracy is studied. Firstly, the theory and operation steps of the multi-array localization algorithm based on bearings-only passive localization are presented. Then, the accuracies of passive localization system with various redundancies (six to twelve buoys) and array shapes are simulated. It is shown from the simulation results that the symmetrical localization error distribution relates to measuring error of direction, position of target, number of sensors and shape of the survey array. The combination of perimeter buoys results in high localization accuracy in the center of array, and the diagonal combination counteracts the low accuracy in the connection regions. Simulation results are verified in the sea trial. |
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