摘要
完好性分析是导航系统分析的重要组成部分,完好性的仿真验证和测试可以降低系统研制的技术风险,是导航领域仿真的一个重要问题。提出了基于用户接收机格网的完好性仿真分析涉及的RAIM算法和RAIM可用性算法等相关算法模型,基于此,设计和实现了导航系统完好性仿真分析系统,最后针对格网分辨率为10°×10°的中国区域格网(24个网格点)进行了完好性的仿真试验分析,验证了相关RAIM算法,讨论了失效卫星对导航系统完好性的影响和基于保护级别概念的完好性计算的不足。
Integrity analysis is an important part of the analysis of navigation system. The simulation verification and testing of integrity will reduce the technical risk of the system＇s development, it is an important issue in the domain of navigation simulation. The algorithms and models such as the arithmetic of RAIM and the availability of RAIM related to the simulation analysis of integrity based on the user receiver grid are proposed. Based on these, an integrity simulation analysis system of navigation system is designed and implemented. Finally, the simulation experiment of the grid of China with 10° resolution （24 grid points ） is implemented and the related algorithms of RAIM are testified, and the influence of failed satellites on integrity availability of navigation system and the deficiency of Integrity Computation based on Protection Level concept are discussed.
出处
《计算机仿真》
CSCD
2008年第6期20-24,共5页
Computer Simulation
关键词
仿真
完好性
可用性
失效卫星
接收机自主完好性监测
Simulation
Integrity
Availability
Failed satellites
Receiver autonomous integrity monitoring
