孙伟;李亚丹;段顺利;

• 1:辽宁工程技术大学测绘与地理科学学院

摘要(Abstract)：

针对车辆在城市峡谷、高架桥梁、密林等环境下可见卫星分布不佳导致导航精度变差的问题,提出一种顾及位置精度因子(PDOP)的自适应北斗卫星导航系统(BDS)精密单点定位技术(PPP)/惯性导航系统(INS)紧组合方法.选择消电离层组合模型作为BDS PPP的函数模型,并对影响定位精度和收敛速度的误差项进行分析处理.依据反映卫星分布状况的PDOP,并根据实测数据建立自适应因子函数模型,通过自适应因子实时调节动力学模型降低因可见卫星分布不佳对导航结果的影响,以此保持导航结果的连续性.结果表明:该方法比传统方法具有更高的定位性能,有效提高了BDS PPP/INS组合导航系统在复杂环境下的定位精度.

关键词(KeyWords)： 自适应定位;北斗PPP;惯性导航;PDOP

Abstract:

Keywords:

基金项目(Foundation): 辽宁省“兴辽英才计划”青年拔尖人才项目(XLYC1907064);; 辽宁省自然基金计划项目(2019-MS-157);; 辽宁省高等学校创新人才支持计划项目(LR2018005);; 辽宁省教育厅高等学校基本科研项目(LJ2017FAL005);; 辽宁省“百千万人才工程”人选科技活动资助项目(辽百千万立项[2019]45号);; 辽宁工程技术大学学科创新团队资助项目(LNTU20TD-06)

作者(Author): 孙伟;李亚丹;段顺利;

Email:

DOI: 10.13247/j.cnki.jcumt.001241

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