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### 起始点位置偏差对精密GPS差分定位影响的研究

1. 武汉测绘科技大学
• 发布日期:1999-02-25

### Study on Impact of Origin Positioning Deviation of DGPS Precise Surveying

Cai Hongxiang (Wuhan Technical University of Surveying and Mapping,Wuhan 430070)

• Published:1999-02-25
• Supported by:
国家自然科学基金

Abstract: In this paper,the impact of the origin positioning deviation on precision of GPS baseline is discussed theoretically,simulated calculation of the GPS raw data is made and the result fits well with that calculated theoretically.The following conclusions could be drawn:the origin positioning deviation does not affect the internal accuracy but makes a systematic error that varies with the origin positioning deviation and tyB m(B m is a mean latitude of the baseline)to the result of baseline.Finally,suggestions are made as to how to get a more accurate WGS84 coordinates when carrying on DGPS(Differential GPS)precise surveying.