摘要
一般来说,观测时间越长,基线解算结果质量就越好。然而当观测时间达到一定长度时,再延长观测时间对提高基线解算结果质量的效果并不明显。本文通过对实测工程GPS网的基线进行分时解算,并对解算结果质量进行比较与分析,得出了以下结论:在观测条件良好时,对边长较短(5km以下)的工程GPS网,其观测时间可以比规范规定的时间缩短10-20min(即缩短1/4-1/2的观测时间)。这个结论对进一步提高GPS测量的效率具有积极的意义。
Generally, the longer the observation time is, the better the resolving quality of the baseline is. However, when the observation time reaches a definite length, it is not obvious to improve the resolving quality of baseline through extending the observation time. In this paper through data process- ing of an actual engineering GPS network by dividing the observation sess and comparing the resolving quality, we can make such a conclusion listed bellow： under a nicer observation condition and the engi- neering GPS network of shorter baseline （shorter than 5 kilometers）, the observation time can shorten 10-20 minutes less than specifications for GPS surveys （shorten the observation time of 1/4--1/2）. It has an active significance for enhancing the efficiency ulteriorly of GPS surveys.
出处
《全球定位系统》
2007年第4期30-32,共3页
Gnss World of China
基金
广西自然科学基金项目(桂科自0640178)
广西教育厅科研项目(桂教科研[2004]20号)
关键词
GPS
必要观测时间
基线处理
基线质量
GPS
necessary observation time
baseline processing
quality of baseline
