| GPS辅助修正惯性导航误差的虚拟卫星算法 |
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| 引用本文： | 侯绍东,王可东,吴镇.GPS辅助修正惯性导航误差的虚拟卫星算法[J].系统仿真学报,2010,22(Z1). |
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| 作者姓名： | 侯绍东 王可东 吴镇 |
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| 作者单位： | 北京航空航天大学宇航学院,北京,100191 |
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| 基金项目： | 高等学校博士学科点科研专项基金(20070006006) |
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| 摘 要： | 传统的GPS(Global Positioning System)/INS(Inertial Navigation System惯性导航)松散组合要求GPS接收的卫星数目不小于4颗。在软件接收机的基础上,提出一种新的组合算法模型,称为虚拟卫星法。只要GPS接收的卫星数目为一颗以上即可修正误差。接收卫星数目达到三颗以上,即可确保速度误差不发散,位置误差也可以很好地抑制。当接收卫星数目达到四颗以上,速度、位置误差均不发散。仿真结果表明,虚拟卫星法在收到新的卫星信号时,能迅速地收敛导航误差。
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| 关 键 词： | GPS INS 虚拟卫星法 软件接收机 组合导航 |
Virtual Satellite Algorithm for GPS-aided Inertial Navigation System |
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| HOU Shao-dong,WANG Ke-dong,WU Zhen.Virtual Satellite Algorithm for GPS-aided Inertial Navigation System[J].Journal of System Simulation,2010,22(Z1). |
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| Authors: | HOU Shao-dong WANG Ke-dong WU Zhen |
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| Abstract: | The traditional GPS/INS loosely coupling integrated navigation required no less than four visible satellites. This paper implemented a new integrated navigation algorithm, virtual satellite algorithm, which was based on the GPS software receiver. The inertial navigation system was updated if one or more satellites were visible. When the number of visible satellites was more than three, the velocity error converged and the position error was reduced to a reasonable value in a span. While the number of visibl... |
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| Keywords: | GPS INS virtual satellite algorithm software receiver integrated navigation |
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