Research On Star Pattern Recognition Method And Simulation System Based On Spaceborne Optical Sensor

Star map recognition is an important basis for stellar navigation and attitude positioning of service aircraft,and is of great significance to the interactive docking of service aircraft and target aircraft,as well as future aircraft maintenance and troubleshooting.Based on the Scilab/Xcos simulation platform,this paper realizes the design research of star pattern recognition method and simulation system based on spaceborne optical sensors.The research work of this article is as follows:(1)Simulation platform analysis and overall design of simulation system.Use the open source software Scilab to build the system development platform and environment,and briefly summarize the open source vision library IPCV.The overall design idea and process of the star map recognition simulation system are introduced.(2)Research on the theoretical basis of star pattern recognition.From star map simulation,star map preprocessing to star map recognition,research and analysis of star sensor imaging,digital image synthesis and star map noise addition,to achieve star map simulation;research and analysis of star map denoising,star point subdivision positioning Method,complete the preprocessing of the star map;research and analyze the establishment of the navigation star database and the triangle star map recognition algorithm,and perform the triangle algorithm matching on the preprocessed star map.After the matching is successful,the number of the navigation star in the feature database and The coordinate value in the celestial coordinate system.(3)Design and implementation of star map recognition method and simulation system.Based on the theoretical basis of star map recognition,the modules are divided,designed and packaged for each function,and the model is built on the Scilab/Xcos platform to realize the normal operation of the system,and the experimental results are compared with the MATLAB experimental data.This paper has initially completed the research on the star map recognition simulation system.The functional modules of the system are designed and packaged,and the system simulation model is built under the Scilab/Xcos platform.By running the simulation system,the experimental results are compared with the MATLAB experimental data to prove that the calculation accuracy of the simulation system meets the requirements.