GPS伪距差分定位技术的试验研究  

Experimental research of GPS pseudo-range differential position

作　　者：兰孝奇[1] 张兵良[1] 黄继红[2] 黄晓时[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098 [2]南京市国土资源信息中心,江苏南京210008

出　　处：《河海大学学报（自然科学版）》2004年第3期300-303,共4页Journal of Hohai University(Natural Sciences)

摘　　要：讨论了GPS伪距差分定位的原理及其数学模型,为了研究伪距差分定位精度,编写了GPS伪距差分定位软件,并对某GPS网的观测数据进行了大量的伪距差分定位试验计算.计算结果表明,GPS三类伪距观测值的差分定位精度基本相同;在距基准站50km范围内,观测10～60s时间的伪距差分定位精度可以达到0 2～0 4m.伪距差分定位技术在海上定位和GIS数据采集等领域有广泛应用前景.The theory and mathematical model for GPS pseudo-range differential position are discussed, and related software is compiled for research on the precision of pseudo-range differential position. A great deal of calculation based on the observed data from a GPS network shows that the precision of differential position is almost the same for three kinds of pseudo-range observed data, and that within a range of 50?km away from the base station, the precision of pseudo-range differential position for the observation time lasting 10～60 seconds can reach 02～04?m. The technique can be widely applied to marine position and GIS data acquisition.

关 键 词：全球定位系统 伪距差分定位 数学模型 流动站 

分 类 号：P228.4[天文地球—大地测量学与测量工程]