多站虚拟量测变换均值无源定位算法
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海军航空工程学院信息融合技术研究所,海军航空工程学院信息融合技术研究所

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?国家自然科学基金(61032001)资助项目; 国家自然科学基金(60972159)资助项目; 国家自然科学基金(61002006)资助项目。


A multi-sensor ME passive localization algorithm based on virtual measurement transform
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Institute of Information Fusion,Naval Aeronautical and Astronautical University

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    摘要:

    在多站无源均值定位算法中,为了解决部分传感器间夹角过大或过小所导致的定位精度下降问题,提出一种基于虚拟量测变换的多传感器管理无源定位算法。首先在全局坐标系下分析了传感器间夹角对GDOP的影响,进而得到双站获得较好定位精度的夹角约束关系;其次针对不满足该约束关系的传感器组合提出一种虚拟量测变换定位算法,通过空间管理的方法达到对传感器的优化布站,并结合算法的实施步骤对其原理及特点进行了理论分析,尤其对变换前后的交点精度进行了比较。仿真结果表明虚拟量测算法的定位精度要明显优于均值算法,进而说明该算法的有效性及传感器管理在多站无源定位中的重要作用。

    Abstract:

    To solve the localization precision descending about ME algorithm when the cut angles between partial sensor pairs are too small or big in a multi-sensor system, a multi-sensor management passive localization algorithm based on virtual measurement transform (VMT) is presented. The effect of cut angle on the GDOP is analyzed in global coordinate system firstly, and the cut angle restriction relationship is obtained from which the better localization precision of dual-sensor system can be achieved. Secondly, the VMT localization algorithm is presented when certain sensor pairs do not satisfy above restriction relationship, which can deploy sensor in an optimal way by means of sensor space management. The principle and characteristics of the algorithm are analyzed, especially the precision of intersection which after and before transform are compared from the perspective of GDOP. Simulation results indicate that the performance of VMT algorithm excels that of ME algorithm remarkably, which verifies it and the important role that sensor management plays in multi-sensor passive localization.

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何友,王本才.多站虚拟量测变换均值无源定位算法[J].数据采集与处理,2012,27(1):

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  • 收稿日期:2011-01-13
  • 最后修改日期:2011-06-26
  • 录用日期:2011-10-25
  • 在线发布日期: 2012-08-21