A directional testing model of space block is studied for effective utilization of optical equipment as theodolite, which gives out the influencing range of testing error on the calculated results. Thus, gists for guaranteeing actual measuring accuracy and improving testing efficiency are provided. And, the open question in accurate measurement of space block direction can be solved. In this paper, angular information of two different marker points on space block are used for directional testing, through which a partial derivative based error propagation model is built. The rationality and credibility of this model is verified by Monte Carlo simulation. Besides, its calculation results are validated through conventional variance test method in the end. The validation results indicate the rationality and credibility of the partial derivative based error propagation model. The error propagation model can be used to study measuring error distributions on different areas of space block, which lays a firm foundation for optimizing measuring stations distribution, and guarantees measure precision.
['Hongquan Wu', 'Guangling Dong', 'Chi He', 'Wei Ma', 'Jietao Xie', 'Ruibing Shi', 'Hongqiang Wei']
Error Modeling and Simulation for Directional Testing of Space Block