起算点精度对GPS基线的影响  

The impact of the known points precision on GPS baselines

作　　者：彭云[1] 周勇 

机构地区：[1]信息产业部综合勘察研究院嘉兴分院,浙江嘉兴314000 [2]浙江玉环县城建测量队,浙江玉环317600

出　　处：《桂林工学院学报》2004年第3期337-339,共3页Journal of Guilin University of Technology

基　　金：国家自然科学基金重点项目(19833030);国家自然科学基金面上项目(NSFC-10073017)

摘　　要：在工程测量中通常采用双差模型求解GPS基线,解算时要求知道一个端点的坐标,该坐标的精度对GPS基线的解算结果有影响.通过模拟计算发现,已知点的精度越低,基线的解算精度也越低。因此,为了保证GPS基线解算精度,必须采用高精度起算点,并给出了提高起算点精度的3种方法.GPS technology is widely applied in engineering survey. Usually, the baselines are found with the double difference model. The coordinates of an end point are required to be known in solving the baselines. The precision of the known points has impact on the solutions of the baselines. It is found out in stimulation that the lower the precision of the known points, the lower the precision of the solved baselines. So to guarantee the necessary precision in solving baselines, the precise known point is used.Three methods for improving the known points precision are put forward.

关 键 词：GPS技术 基线 精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]