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组合卫星导航系统的快速选星方法

霍航宇 张晓林

霍航宇, 张晓林. 组合卫星导航系统的快速选星方法[J]. 北京航空航天大学学报, 2015, 41(2): 273-282. doi: 10.13700/j.bh.1001-5965.2014.0138
引用本文: 霍航宇, 张晓林. 组合卫星导航系统的快速选星方法[J]. 北京航空航天大学学报, 2015, 41(2): 273-282. doi: 10.13700/j.bh.1001-5965.2014.0138
HUO Hangyu, ZHANG Xiaolin. Fast satellite selection method for integrated navigation systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 273-282. doi: 10.13700/j.bh.1001-5965.2014.0138(in Chinese)
Citation: HUO Hangyu, ZHANG Xiaolin. Fast satellite selection method for integrated navigation systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 273-282. doi: 10.13700/j.bh.1001-5965.2014.0138(in Chinese)

组合卫星导航系统的快速选星方法

doi: 10.13700/j.bh.1001-5965.2014.0138
基金项目: 国防科工局航天民用专项资助项目; 北京市重点学科基金资助项目(XK100070525)
详细信息
    作者简介:

    霍航宇(1981—), 女, 黑龙江绥化人, 博士生, huohangyu@126.com

    通讯作者:

    张晓林(1951—),男, 北京人, 教授, zxl@buaa.edu.cn, 主要研究方向为卫星导航系统、飞行器遥测遥控、集成电路设计、数字电视系统设计等.

  • 中图分类号: TN967.1

Fast satellite selection method for integrated navigation systems

  • 摘要: 分析了选星数目与几何精度因子(GDOP, Geometry Dilution of Precision)及导航运算量的关系,基于遗传算法提出了一种以满足用户定位精度需求为条件的快速选星方法——快速遗传选星法.根据用户需求确定选星数目初值、选星数目最大值和GDOP阈值,构造选星方案的初始种群,在进化代数上限为1的条件下对种群进行选择、交叉和变异运算,获得初始选星解,根据初始解的GDOP与阈值的关系确定是否依据GDOP最小原则对初始解进行优化,直至满足算法终止条件,输出选星解.仿真结果表明,该算法可以在一次进化之内以不低于92.45%的概率满足GDOP阈值在2.5~6的要求,同时可有效降低54.75%以上的导航运算量.

     

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出版历程
  • 收稿日期:  2014-03-21
  • 网络出版日期:  2015-02-20

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