中国空间科学技术

中国空间科学技术

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基于分布式伪卫星的双星定位系统定位方法研究

潘晓刚;赵德勇;周海银;   

  1. 国防科学技术大学,国防科学技术大学,国防科学技术大学 长沙410073,长沙410073,长沙410073
  • 发布日期:2006-06-25

Research on Bi-satellite Positioning System Positioning Method Based on Distributed Pseudolite

Pan Xiaogang Zhao Deyong Zhou Haiyin(National University of Defense Technology,Changsha 410073)   

  • Online:2006-06-25

被引次数

6

摘要： 在分析基于伪卫星技术的双星定位系统研究存在的问题的基础上,提出了一种基于分布式伪卫星的双星定位系统改进定位策略。该策略充分利用双星定位系统的现有资源,将地面标校站改组为分布式伪卫星站,在不改变双星定位系统现有工作体制的基础上,通过融合双星定位系统所有信息进行单点定位。仿真计算结果表明,该改进策略能使低纬度地区定位精度提高近3倍,达到20~60m,且其无源定位方式能够有效解决用户容量限制和隐蔽性、抗毁性较差等问题。

关键词: 双星定位系统, 定位, 精度, 无源定位, 模型, 研究

Abstract: Based on the deficiency of research on the Bi-satellites Positioning System(BPS)(using) pseudolite technology,an improved positioning strategy on BPS which is based on distributed pseudolite technology is pat forward.By taking full advantage of actual equipment of BPS and(restructuring) terrestrial calibration station to distributed pseudolite station,the strategy can carry out single positioning with data fusion method which do not change the actual mechanism of BPS.The improved strategy can ameliorate the GDOP of the system and heighten the location precision from the results of simulation experiment,especially in low latitude area,the location precision which is 20~60m can enhance more than three times of actual location precision,and the none-(resource) positioning mode can solve the limitation of user capability,coverability and anti-(vulnerability).