| Summary: | 碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 95 === Currently, most of high precision GPS positioning trials over short baselines usually take a long period of time in surveying to obtain more accurate standard. In some GPS operation areas, however, it might waste time, human power and even budget without getting any solutions required eventually. The effect of a multipathing errors is considered as the main problem. One of its resolution is focused on reducing the effects of related errors during GPS operation at stations in many researches.
In this research, the investigation on the estimation and the elimination of the related station errors based on a code multipathing approach called CCQC is conducted with available data of various observation time in different environments of DGPS operation stations for a better positioning performance. At the first step, the result of many trials has shown that the bad position of many epochs is still required to be resolved for a entire refined performance. At the second step, all of the defected factors in the test trials are found and cancelled. The final stable and reliable results have shown that DGPS operation capabilities including the positioning accuracy and the shorten periods of surveying time can be significantly enhanced after two step procedures.
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