基于遗传算法的导航源部署算法  

Deployment Algorithm of Navigation Reference Station Based on Genetic Algorithm

作　　者：姚锦涛 张佩华[1,2] 李江 吴林旭[1,2] 王宇琦 YAO Jintao;ZHANG Peihua;LI Jiang;WU Linxu;WANG Yuqi

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068 [2]陕西省组合与智能导航重点实验室,西安710068

出　　处：《现代导航》2024年第3期182-187,共6页Modern Navigation

摘　　要：区域导航系统是重要的卫导备份和增强手段,由于导航源与用户距离较近,导航源的几何分布对区域导航系统性能影响显著。为了提高区域导航的定位精度,基于遗传算法研究导航源的部署方案。首先对导航源部署位置进行编码,设计能体现几何因子优劣的适应度函数,选择合适的选择算子、交叉算子和变异算子。然后遗传进化得到导航源部署位置。仿真结果表明,提出的方法在服务区域、部署区域和导航源数量变化的情况下,可以快速得到满足要求的导航源部署位置,能够解决实际场景中导航源部署位置的问题。Regional Navigation System(RNS) is an important backup and enhancement means of GNSS.Due to the close distance between the Reference Station(RS) and the user,the Geometric Dilution of Precision(GDOP) of the RS has a significant impact on the performance of the RNS.In order to improve the positioning accuracy,the deployment scheme of RS based on genetic algorithm is studied.Firstly,the Deployment Location(DL) of the RS is encoded,a fitness function that can reflect god or bad of GDOP is designed,and appropriate selection operators,crossover operators,and mutation operators are selected.Then,genetic evolution is used to obtain the DL of the RS.The simulation results show that the method proposed can quickly obtain the required DL of RSs in the case of changes in the service area,deployment area,and number of RSs,and can solve the problem of DL of RSs in practical scenarios.

关 键 词：区域导航 几何精度因子 遗传算法 导航源部署位置 

分 类 号：TN967[电子电信—信号与信息处理]