Synthesis Methods In Cycle Slip Detection And Repairing Research Based On MATLAB

To carry out the cycle slip detecting and repairing carrier phase observations before the data processing of GPS satellite positioning, many researches of the cycle slip detecting and repairing carrier phase observations in domestic and overseas, but there is no universal method to solve the problem, therefore it systematically analyzes and sdudies the algorithm of the cycle slip detecting and repairing, The comprehensive method of combining single method of the cycle slip detecting and repairing.First of all, based on the basic theory of cycle slip detecting and repairing, it systematically analyzes the scopes and survey effects of the single method method, polynomial fitting, the ionosphere residual method, the width phase narrow reduce false method, the Blewitt method, wavelet transformation method, and Bayes methods in time series through the simulation of cycle slip to verify the reliability of the results.Then, to single method has its own advantages and limitations, it proposes comprehensive method of wavelet transformation and linear neural network and ionosphere residual method, phase pseudorange reduction method and MW group legal hybrid of cycle slip detecting and repairing algorithm of the methods. Based on the MATLAB platform design of cycle slip detecting and repairing system, it has a cycle slip detecting and repairing is convenient, intuitive, and dealing with reliable results, etc.Finally completing the GPS measurement data to comprehensive methods is used for the experiment. Experiments show that can effectively detect more than 1 week cycle; Method of wavelet transform and linear joint effort to explore the effectiveness of the repair methods of neural network are analyzed, and found that the wavelet can accurately detect 0.5 weeks cycle, using the neural networks can be limited to 1 week to jump to effectively repair last week. and creating a system of single and combination methods for cycle slip detecting and repairing based on MATLAB platform, which has the certain theoretical value and higher application of value and the guiding significance to the actual project.