Study On High-rate GPS Kinematic Positioning Data Precise Processing And Its Application

The traditional view is that the GPS geodetic research focused primarily on the earth’scrust long period variation characteristics, but with the GPS observation precision andprocessing method of continuous improvement and improve, high sampling rate and highsampling rate of GPS receiver, GPS measurements in the earth’s crust has the hugedevelopment instantaneous deformation. The purpose of this paper is the study caculatingmethods and applcation prospect of high dynamic GPS data sampling rate. On this basis, thispaper aimed at considering some of the factors at high sampling rate in the dynamic GPS dataprocessing for the following research:(1) Systematically analyze methods of the high sampling rate of GPS data processingand problems of frame of reference in GPS data processing. Different frequencies isdiscussed the linear combination and application of carrier phase. Analyzed the main factorsinfluencing the precision of GPS positioning and eliminating and reducing methods.(2) High precision dynamic positioning module TRACK later in the GAMIT areintroduced and developed by Tokyo Marine university GPSTOOLS GPS precise point dataprocessing software. System elaborated the TRACK parameter setting method and the fuzzydegree calculating method of TRACK module. At the same time, combining with thesoftware through the example analysis of the relative dynamic positioning and precise pointpositioning two processing methods in high sampling rate of GPS positioning precision indata processing.(3Analyzed the different sampling interval of satellite clock error’s influence on the precisepoint positioning data, choose several commonly used interpolation methods for5min and30s of the sampling interval differential clock data is encrypted, comparise and analyze ofvarious interpolation methods interpolation effect.(4By taking advantage of high sampling rate trajectory of on-board receiver on-boardexperimental data is analyzed, and the2010Mexico earthquake at5Hz observation data processed and analyzed of vibration displacement of ground surface deformation. Byanalyzing two examples to verify the research object in high sampling rate of GPS dynamicpositioning instantaneous changes the application prospect.