| 摘要: |
| 测量站的布站直接影响时差定位目标的定位精度。针对一定区域目标整体定位精度
的优化，提出了一种三站时差定位的布站优化算法。以水平定位精度因子(HDOP)为定位精度
的
度量准则，建立布站优化问题的多目标规划数学模型，通过构造最小最大评价函数，求解模
型的最优解，从而得到三站时差定位的最优布站。仿真给出了该布站优化算法对某种初始布
站进行优化前后两种布站的HDOP分布图。由仿真结果可以看出，相对于初始布站，最优布站
对目标区定位精度的提高较为明显，验证了这种布站优化算法的有效性。 |
| 关键词: 三站时差定位 多目标规划 布站优化 评价函数 |
| DOI： |
|
| 基金项目: |
|
| A Station Layout Optimization Algorithm for Tri Station TDOA Location |
| ZENG Hui,ZENG Fang-ling,GU Yu-xiang |
| (PLA Electronic Engineering Institute,Hefei 230037,China;
Unit 61764 of PLA,Sanya 572013,China) |
| Abstract: |
| Station layout has a direct impact on location precision for the tris
tation TDOA (time difference of arrival) location system. In order to optimize t
he overall location precision of targets in certain area, an algorithm for stati
o
n layout optimization is presented. HDOP (horizontal dilution of precision) is r
egarded as the measurement rule of location precision. Then the multiobject pr
o
gramming mathematical model of station layout optimization is built. The optimal
solution is searched by constructing minmax evaluation function. Consequently,
the optimal layout of stations is obtained. The simulation provides the HDOP dis
tri
bution of two station layouts. One is the initial station layout, and the other
is the optimal station layout. The simulation results show that for the opti
mal station layout, the effect of improving the location precision is obvious, a
nd also indicate the validity of this algorithm. |
| Key words: tri station TDOA location multi object programming station layout optimization evaluation function |
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