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因目前没有针对小视场星跟踪器的室内测试设备,而外场试验和试飞试验成本高、难度大,为了对组合导航系统的算法和性能进行测试,本文设计了一种基于小视场星跟踪器的天文/惯性/卫星组合导航半实物仿真系统。该系统根据实际采集的导航源数据建立误差仿真模型,产生仿真数据,结合组合导航系统原理样机中的导航处理器和显控单元实物模块,形成半实物仿真系统。它具有很强的灵活性和可扩展性,可有效地降低组合导航系统的实验成本,缩短研制周期,对研究组合导航系统的算法性能、系统特性和工程应用等具有重要理论和实践意义。
Because there is no indoor test equipment for small field star tracker and field test and test flight test are costly and difficult, in order to test the algorithm and performance of integrated navigation system, this paper designs a small field star tracker based Astronomy / inertial / satellite integrated navigation semi-physical simulation system. The system builds the error simulation model based on the actual navigation source data and generates the simulation data. Combined with the navigation processor and the physical module of the display and control unit in the prototype of the integrated navigation system, a semi-physical simulation system is formed. It has a strong flexibility and scalability, which can effectively reduce the experimental cost of the integrated navigation system and shorten the development cycle. It has important theoretical and practical significance for studying the algorithm performance, system characteristics and engineering application of integrated navigation system.