卫星/INS组合导航仿真平台结构与仿真模型研究

Study and Implementation of Satellite/INS Integrated Navigation Simulation Platform

建立卫星/INS组合导航仿真平台可以先行对结构设计、相关算法和精度分析验证提供支持,是优化设计指标和加快开发周期的有效途径。本文根据卫星/INS组合导航系统的特点,利用面向对象技术进行模块分解,设计了一种扩展性好的卫星/INS组合导航仿真平台结构。并提出了与此平台构建相关的关键仿真模型。另外,还提出了一种从数值上对卫星轨道根数进行仿真的方法,避免了直接由动力学模型来计算卫星轨道根数的复杂性,简化了卫星轨道根数的仿真。

Building a satellite/INS integrated navigation simulation platform can support the structure design, related algorithms verification and accuracy analysis of the real system in advance. Based on the characteristics of satellite/INS integrated navigation system, an expandablesatellite/INS integrated navigation simulation platform, modularized with object-oriented technology is designed. This paper also analyzes the key model in this platform and presents a numerical method to calculate the orbital trajectory, which can avoid the complex computation companied with the dynamic model so as to simplify the satellite orbital trajectory simulation.