| 北斗无源定位的虚拟卫星算法 | |
| 刘家兴 ; 陆明泉 ; 崔晓伟 ; 冯振明 ; LIU Jiaxing ; LU Mingquan ; CUI Xiaowei ; FENG Zhenming | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 虚拟卫星定位 北斗无源定位 气压高度计 定位精度 virtual satellite positioning Beidou passive positioning barometric altimeter positioning accuracy P228.1 |
| 其他题名 | Virtual satellite algorithm for Beidou passive positioning |
| 中文摘要 | 为了解决现有的气压高度计辅助卫星定位算法计算繁琐或者难于分析定位精度的问题,该文提出虚拟卫星定位算法。该算法根据用户的位置估计值生成一颗"虚拟"卫星,对应的"虚拟"伪距由气压高度计提供,结合用户的可见卫星和测得的伪距来更新用户的位置估计值,反复执行上述过程直至收敛。该算法计算步骤简单,可直接进行定位精度分析。将该算法应用于北斗三星无源定位当中,仿真结果表明:设定气压测高误差标准差为8m,则中国及邻近地区的位置精度因子为8.8至22.4;在清华大学校园进行的静态测试显示,在各个历元上迭代过程只有4～9次,定位均方根误差为42.7m。; Current satellite positioning algorithms that rely on barometric altimeters are either complex or have difficulty to analyze positioning accuracies.This paper presents a virtual satellite positioning algorithm that generates a "virtual" satellite based on the user's estimated position using the "virtual" pseudorange provided by the barometer.The user's estimated position is iteratively renewed based on the real and virtual satellite pseudoranges until convergence.The algorithm simplifies the computations and can accurately analyze the positioning.Application of the algorithm to passive positioning with three Beidou geostationary satellites shows that the position dilution of the precision factor ranges from 8.8 to 22.4 across China and nearby regions if the barometric altitude error is 8 m.A static test on the Tsinghua University campus shows that only 4 to 9 iterations are required for each epoch,and that the root-mean-square positioning error is 42.7 m. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/54470]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 刘家兴,陆明泉,崔晓伟,等. 北斗无源定位的虚拟卫星算法[J],2010, 2010. |
| APA | 刘家兴.,陆明泉.,崔晓伟.,冯振明.,LIU Jiaxing.,...&FENG Zhenming.(2010).北斗无源定位的虚拟卫星算法.. |
| MLA | 刘家兴,et al."北斗无源定位的虚拟卫星算法".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论