Quality Control Of Baseline Solution And Reliable Examination Of Datum Points In Gps Network

Global positioning system(GPS) has been applied widely in kinds of engineering buildings along with the rapid development of "3S" technology. It is very important to improve the GPS data processing quality that how to analyze the error source of baseline solution, examine baseline solution precision through quality control target, and do manual analysis and processing about several techniques on baseline solution process. In addition, the quantity combination, position distributing and error magnitude of datum points will immediately influence GPS localization results precision. So it is necessary pledge of improving GPS data processing quality that the reliable examination of datum points and analysis the impact of adjustment result.In this paper, I researched baseline resolution error analysis in GPS network, baseline solution quality control method, relations between adjustment result precision, datum points quantity and position distribution, reliable examination of datum points etc., which based on the GPS data processing software and programs by using actual GPS network project observation. The aim is the subject in the GPS network the baseline resolution error source analysis, quality control target and method, influence of datum points distribution to control network precision, reliable examination of datum points etc. If we use two methods including restrain adjustment and indirect division groups applies in reliable examination, it can examine about 10cm gross error of datum points, discover and eliminate it which includes gross error. And it can improve resolving precision by analyzed target in the process of Baseline solution. It will enhance the precision of control network by the best configuration about the quantity and position of datum points in GPS network.The above question's research has provided the theory instruction to the reliable examination of datum points and the baseline solution quality control in GPS data processing. It is effective method to GPS control network data processing and quality inspection in the engineering project.