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针对目前TEQC数据质量检核软件尚不支持同时检核GPS/BDS/GLONASS/Galileo四系统观测数据质量的现状,该文基于开源代码的Anubis命令式窗口软件,重新编译Anubis软件代码,以扩展北斗导航系统新频点新信号数据的处理功能;依托Python平台实现Anubis软件的可视化界面封装以及质量检核结果的可视化输出,并对其软件功能和检核结果有效性进行验证。实验结果表明,改进后的Anubis软件能够以多种质量指标有效检核GNSS数据,满足检核新一代iGMAS接收机数据质量的需求。 相似文献
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为研究无人机低空倾斜摄影测量在武汉市海绵城市建设中的应用前景，以武汉市某厂区海绵城市竣工项目为例，使用精灵4实时动态差分(RTK)无人机进行外业低空摄影测量，同时使用常规测量手段进行辅助测量，获取航测外业原始数据与检核点数据；然后使用大疆智图软件对航测外业数据进行空中三角测量并查看精度报告，获取测区正射影像和三维模型；再使用南方地形地籍成图软件(CASS)的3D功能进行三维裸眼测图，绘制测区1∶500地形图，并根据检核点验证其精度；最后根据地形图及其他收集资料，制作厂区海绵城市、绿化、竣工相关图表并分析。结果表明，使用精灵4 RTK航测数据进行海绵城市竣工测量，最终成果满足成图精度的要求，可应用于海绵城市工程建设与验收。 相似文献
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无人机倾斜摄影测量的发展为全国第三次土地调查带来了新的作业方式,弥补了全站仪、RTK等传统作业方式效率较低的短板。本文通过对无人机倾斜摄影测量在全国第三次土地调查中的应用可行性进行分析介绍,研究其技术特点及作业流程,并通过某地区调查项目进行实际应用研究,获取测区外业影像数据,构建三维实景模型,然后利用测区布设的检核点对模型精度进行分析检验,结果表明：本项目构建的三维模型精度较高,满足规范精度和生产使用要求,同时大大提高了全国第三次土地调查作业效率,具有较强的现实意义。 相似文献
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《International Journal of Digital Earth》2013,6(1):80-87
Abstract Cultures throughout the world are associating with the rivers. People depend upon the rivers and their tributaries for food, water, transport, and many other aspects of their daily lives. Unfortunately, human beings have not calculated the accurate lengths for the great rivers even today. The lengths of the rivers are very different in popular textbooks, magazines, atlases and encyclopedias, etc. To accurately determine the lengths of the principal rivers of the world, the combination of satellite image analysis and field investigations to the source regions is proposed in this paper. The lengths of the Nile, Amazon, Yangtze, Mississippi, Yellow, Ob, Yenisey, Amur, Congo and Mekong, with lengths over or close to 5000 km, were calculated using the proposed method. The results may represent the most reliable and accurate lengths of the principal rivers of the world that are currently achievable. 相似文献
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In this letter, we are trying to resolve the electromagnetic problem for the movements of the superconducting particles of the protoplanetary cloud in the magnetic field of Saturn. The force of levitation (Meissner-Ochsenfeld phenomenon) is introduced to the field of planetary science for the first time. It is shown from our theoretical analysis that rings of Saturn might have a superconducting origin, and rings might levitate within magnetic equator plane of the planet. 相似文献
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