第1个回答 2009-06-07
本文对某高速铁路项目GPS控制网的复测过程进行了系统的论述，详细的说明了GPS测量的作业流程，同时也阐述了相关GPS技术原理。本文将项目复测后得出的成果与设计院成果进行比较，发现有一部分点位的复测坐标与设计坐标有较大出入。为了寻找问题原因及提高复测数据的可靠性，又对项目相关部分进行了第二次复测，第二次复测成果同样显示部分点位与设计院成果较差过大。本文通过对相关数据的仔细分析研究，得出了造成复测成果与设计院成果差异的原因，并提出了相应的解决方案，为设计单位提供了借鉴，避免了由于点位坐标错误而带来的工程损失。
In this paper, a high-speed railway project of GPS control network retest process on the system, a detailed description of the GPS measurement processes, but also on the relevant principles of GPS technology. This project after retest result of a comparison with the results and design and found that some of the points coordinates and design of test-retest differ materially from the coordinates. In order to find the cause of the problem and improve the reliability of test-retest data, the relevant parts of the project also conducted a second retest, retest results of the second part of the same points and show the results of poor design institute to be too large. Based on careful analysis of data research, arrive at the results caused by test-retest differences and the reasons for the outcome and Design Institute, and the corresponding solutions for the design of units of the reference to avoid errors due to point coordinates brought about by loss of the project.
第2个回答 2009-06-07
本文对某高速铁路项目GPS控制网的复测过程进行了系统的论述，详细的说明了GPS测量的作业流程，同时也阐述了相关GPS技术原理。本文将项目复测后得出的成果与设计院成果进行比较，发现有一部分点位的复测坐标与设计坐标有较大出入。为了寻找问题原因及提高复测数据的可靠性，又对项目相关部分进行了第二次复测，第二次复测成果同样显示部分点位与设计院成果较差过大。本文通过对相关数据的仔细分析研究，得出了造成复测成果与设计院成果差异的原因，并提出了相应的解决方案，为设计单位提供了借鉴，避免了由于点位坐标错误而带来的工程损失。
The main body of a book process has carried out systematic discussion on some high speed railway project GPS under the control of net re-testing, principle having explained the school assignment technological process that GPS measures , having set forth at the same time also the relevance GPS technology detailedly. Achievement and designing institute achievement the main body of a book is reached after a project is re-tested carry out comparison , find that to the bigger discrepancy re-testing a coordinate and designing that the coordinate has having part of place. Cause and rise re-test the data reliability for seeking problem , to project relevance part the second time having been in progress re-tests , second time re-tests the same achievement display part to count a place and the designing institute achievement range is too big. The main body of a book has been studied by the careful analysis to relevance data , has reached have brought about the cause re-testing achievement and designing institute achievement difference , have resolved and a scheme having brought forward small advantages's , have provided the project loss having drawn lessons , avoiding since the place coordinate wrong but brings about to the design organ.
这样就可以了。
第3个回答 2009-06-07
In this paper, a high-speed railway project of GPS control network retest process on the system, a detailed description of the GPS measurement processes, but also on the relevant principles of GPS technology. This project after retest result of a comparison with the results and design and found that some of the points coordinates and design of test-retest differ materially from the coordinates. In order to find the cause of the problem and improve the reliability of test-retest data, the relevant parts of the project also conducted a second retest, retest results of the second part of the same points and show the results of poor design institute to be too large. Based on careful analysis of data research,
Obtained results caused by test-retest differences and the reasons for the outcome and Design Institute, and the corresponding solutions for the design of units of the reference to avoid errors due to point coordinates losses brought about by the project.