| 摘要: |
| 针对协方差交集的最优融合问题，提出了一种基于网格剖分的协方差交集融合新算法
。该算法首先利用几何法对位置空间进行网格剖分，求出局部航迹协方差椭圆所包含的网格
集合；其次，对所有的网格集合进行与运算，求出局部航迹协方差椭圆所包含的公共网格集
合；最后，利用公共网格集合逼近协方差椭圆的交集，求出融合估计值。蒙特卡罗仿真试
验证明，该方法能有效提高相关误差航迹的融合精度。 |
| 关键词: 协方差交集 分布式融合 网格剖分 |
| DOI： |
|
| 基金项目: |
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| A new covariance intersection fusion algorithm based on grid partition |
| WANG Qian-dong,LUO Ze-ju,PENG Ming |
| () |
| Abstract: |
| Aiming at the optimal fusion of the covariance intersection algorithm,
a new covariance intersection algorithm based on the grid partition is presente
d for position fusion. Firstly, the position area is partitioned into many small
rectangle grids by geometric method and the error ellipse of the local track is
t
ransformed into the set of the rectangle grids. Secondly, the common grids set a
re computed by logic and operation for the set of the rectangle grids.Finally,
the optimal approximation for the covariance ellipse of the fusion estimation is
computed by the common grids set and the estimated value of the fusion track is
calculated by the common grids set. The Monte Carlo simulation shows the method
can improve the precision of fusion track. |
| Key words: covariance intersection algorithm distributed fusion grid partition |
