| The flight state simulation and visual simulation of in-orbit objects are of great significance for monitoring the flight state of the aircraft and predicting the trajectory of the aircraft.In this paper,Scilab/Xcos platform is used to complete the design of the simulation model.The 3d engine OpenSceneGraph is used to design and develop the visual simulation system.The research work of this paper is as follows:(1)Simulation platform analysis and construction.The open source software is used to build the system development platform and environment,the package design of Xcos module is given,the non-relational database HBASE is used to build the data table and briefly describe the contents of the table,and the functional design and module division are carried out according to the requirements of visual simulation system.(2)research the theory and simulation modeling of satellite orbit extrapolation.The representation method of space time system,space coordinate system and transformation,space target position description and space environment influencing factors are studied.The model of Kepler and J2 out-of-orbit estimation method was analyzed and studied.Scilab/Xcos simulation software was used to encapsulate the module of out-of-orbit estimation method,and the simulation calculation was carried out.The target satellite data was stored in HBASE,.(3)Visual simulation system design.The 3d basic scene simulation is realized and the satellite animation simulation is driven by reading the HBASE database.The main functions include: terrain data loading,simulation time display,trajectory drawing,satellite flight animation display and scene roaming,etc.In this paper,the flight mission simulation and visual simulation system research are preliminarily completed,and the flight orbit data calculation and visual simulation arerealized.The system runs stably and has a friendly interface.The system has passed the test audit of an aerospace research institute and been put into use. |
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