摘要
文章根据GPS精密单点定位原理,结合一例航测工程实践,以传统的事后相位差分解算结果为参考,通过对解算结果的比较统计,进行了GPS精密单点定位的精度分析,结果表明:在剔除系统误差后,二者的符合精度已达厘米级水平。同时把用PPP方法解算的动态数据应用于GPS辅助空三中,也得到了同双差方法相同量级的精度,满足相应航测规范规定的要求。证明GPS精密单点定位的潜在定位精度很高,可以大幅降低航摄外业工作量,提高作业效率和实用性,同时也为我国西部测图提供了一种新思路。
Based on the principle of GPS precise point positioning （PPP） and an aerial photogrammetry practice data, this paper caculated the precision of PPP in the practice, and compared it with another one computed using traditional differentiation positioning on the data. It showed that two precisions were cm level if system error was removed. When the dynamic data got from method was applicated into GPS-assisted aerotriangulation, the same precision could be got. It could meet the requirement of aerial photography. The result also showed that the PPP had high potential precision, it could reduce the field workload of the aerial photography, and improve operational efficiency and practicality, and provide a new idea for mapping of China＇s western region.
出处
《测绘科学》
CSCD
北大核心
2009年第5期5-7,共3页
Science of Surveying and Mapping
基金
数字航空摄影仪关键技术研究(编号:14601402024-01-02)
