共查询到16条相似文献，搜索用时 125 毫秒
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为满足泉州市区域似大地水准面精化,通过精密GPS C级水平控制网的实践,对其精度及误差进行分析,认为对精密GPS水平控制网质量控制主要是起算数据、控制网的设计、定位测量及数据处理.依据工程项目,提出减少或消除其影响的措施. 相似文献
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以上海市高速公路网及若干主要国道的道路框架点ＧＰＳＤ控制网施测及观测数据处理为例,详细分析和总结了中长距离道嘱导线形式ＧＰＳ控制网的设计布设方法、网的稳定度和数据处理经验。 相似文献
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GPS技术在交通中的应用 总被引：1，自引：0，他引：1
文章介绍了GPS系统组成、定位原理、GPS交通控制网的建设步骤、GPS系统在交通运输中的应用(包括在道路工程、汽车导航和交通管理),最后对其前景作了展望. 相似文献
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文章介绍了GPS系统组成、定位原理、GPS交通控制网的建设步骤、GPS系统在交通运输中的应用（包括在道路工程、汽车导航和交通管理），最后对其前景作了展望。 相似文献
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鸳鸯湖矿区位于宁夏回族自治区宁东煤田,该次GPS作业利用3个三等三角点作为起算数据,2个四等三角点作为检核数据,进行网平差及高程拟合。外业数据质量检验结果表明其重复基线及同、异步环闭合差均小于限差,符合规范要求。内业数据处理采用广播星历网基线处理,无约束平差、约束平差基线分量改正绝对值均小于限差值。6个水准点的网平差高程拟合结果证实GPS高程精度优于三角高程。测量成果经宁夏测绘产品质量监督检查站检查,成果精度达到《全球定位系统（GPS）测量规范》（GB/T18314-2001）的有关精度要求。说明鸳鸯湖矿区清水营井田GPS控制网的成果可靠。 相似文献
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简要介绍了CORS系统的发展情况,分析了GPS C级控制网测量的精度,就GPS网的布设、基线解算、GPS网平差及检核进行有益的探讨,旨在发挥CORS的优势,解决GPS控制网测量中控制点缺乏的问题,提高CORS的应用水平。 相似文献
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天津市高精度GPS地面沉降监测网数据处理中的若干技术问题探讨 总被引：6，自引：0，他引：6
本文以天津市区地面沉降GPS监测网为例,探讨了高精度GPS地面沉降监测网数据处理中的若干技术问题。研究表明,GPS数据处理软件、GPS监测网的框架基准、大气延迟改正和粗差对计算结果的精度有很大影响。在对GPS原始观测数据进行后处理时,只有对影响计算精度的各种误差源进行有效改正,GPS高程分量的精度才有可能达到毫米级,才能满足地面沉降监测的要求。 相似文献
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《Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy》2000,25(4):409-414
A detailed study of the Earth tide effects on the GPS kinematic/static positioning is presented in this paper by using theoretical Earth tide computation and practical GPS data processing. Tidal effects could reach up to 30 cm in Denmark and Greenland depending on the measuring time and the position of reference station. With a baseline less than 80 km, the difference of the Earth tide effects could reach more than 5 mm. So, in precise applications of GPS positioning, the Earth tide effect has to be taken into account even for a relative small local GPS network. Several examples are given for demonstrating that the Earth tide effects can be viewed by GPS surveying. They are given through static GPS data static processing, static GPS data kinematic processing, and airborne kinematic GPS data processing. In these cases, the Earth tide effects can be subtracted from the GPS results. The determination of tidal parameter through static GPS data kinematic processing has also been tested. 相似文献
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本文通过在四川丹巴县梭坡乡亚喀则滑坡区布设的GPS监测网的测量,阐述了GPS在滑坡监测时监测点位选择、监测网布设、数据处理的方法。亚喀则滑坡的GPS监测结果表明,其精度达到毫米级,完全满足滑坡监测的精度要求。 相似文献
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In order to study contemporary crustal movement of Antarctic, China has not only constructed the deformation monitoring network in West Antarctic Fildes strait region, but also monitored the network by using DI-20 Geodimeter and GPS instruments, and participated the Antarctic GPS Campaign Observation organized by SCAR as well.During mathematics processing of crustal horizontal deformation observations, a method to bring deformation parameters into the error equations of observations is discussed in this paper. Several classical deformation models, such as rigid body displacement and strain, are introduced in detail. By analyzing the reference datum of statistical geodetic network, a conclusion is drawn that it is unfit to use rank-defected reference datum for the crustal deformation analysis, and another method is developed to set up different additional weight matrix for every different kind of parameter, the classical adjustment and rank-defected adjustment are well unified. Two methods of considering or non-considering the relation between point parameters and deformation parameters are compared, and the former is more appropriate than the latter. A series of programs are developed to implementing the method mentioned above and the analysis of West Antarctic Fileds deformation monitoring network. It is also involved GPS data processing and analysis of deformation results in the paper. The research results indicate that it seems exacting displacement in Fildes rift region, but the displacement is not large, just a little rift shear movement. 相似文献