The Method Research On High-precision Baseline Solution Of GPS/BDS Combination

Static baseline solution,with phase observation of two or more sites,is the solution procession of their relative vectors due to their relativity.And the GNSS of baseline solution is also developing rapidly in recent years.Recently,international GNSS includes Global Positioning System of America,the GLONASS of Russian and the BDS of China,and the Galileo of European.With the continuous development of GNSS positioning technology,the positioning accuracy has been also improved.But the cycle slip detecting and repairing,the selection of stochastic model,fuzzy degree of fixed is still a hot spot of research at home and abroad in GNSS.In this paper,the BDS/GPS integrated precision positioning theory and algorithm was studied thoroughly,and my research is mainly focused on the cycle slip detection,stochastic model,fuzzy degree of fixation,and calculating baseline with my own program.And the main contents and conclusions are as follows:1.Discuss the crucial questions in prelimainary preparation of data,which includes GPS and GPS,unified coordinate system,the time system,the unity of the space and time benchmark,the characteristics of various error and processing method,and the influence of the error magnitude.2.Rearch the cycle slip dection by the ionosphere residual and the method of combination of M-W,select the function model,and rearch the influence of equal weight and Helmert.Finally fixed the ambiguity solve the baseline.3.By establishing the error equation,and the least squares principle to find the floating point solution,then according to LAMBDA to fix the ambiguity.Finilly,replace the fixed solution to find out the result.4.Using the c++ language to make the program of GPS/BDS Baseline solution on the program named Visual Studio.