...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geodesy >Forecast Vienna Mapping Functions 1 for real-time analysis of space geodetic observations
【24h】

Forecast Vienna Mapping Functions 1 for real-time analysis of space geodetic observations

机译：预测维也纳制图功能1可实时分析空间大地观测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Vienna Mapping Functions 1 (VMF1) as provided by the Institute of Geodesy and Geophysics (IGG) at the Vienna University of Technology are the most accurate mapping functions for the troposphere delays that are available globally and for the entire history of space geodetic observations. So far, the VMF1 coefficients have been released with a time delay of almost two days; however, many scientific applications require their availability in near realtime, e.g. the Ultra Rapid solutions of the International GNSS Service (IGS) or the analysis of the Intensive sessions of the International VLBI Service (IVS). Here we present coefficients of the VMF1 as well as the hydrostatic and wet zenith delays that have been determined from forecasting data of the European Centre for Medium-Range Weather Forecasts (ECMWF) and provided on global grids. The comparison with parameters derived from ECMWF analysis data shows that the agreement is at the 1 mm level in terms of station height, and that the differences are larger for the wet mapping functions than for the hydrostatic mapping functions and the hydrostatic zenith delays. These new products (VMF1-FC and hydrostatic zenith delays from forecast data) can be used in real-time analysis of geodetic data without significant loss of accuracy.
机译：维也纳工业大学大地测量与地球物理研究所（IGG）提供的维也纳制图功能1（VMF1）是对流层延迟最精确的制图功能，对流层延迟在全球范围内以及整个空间大地观测的历史中都可以使用。到目前为止，VMF1系数的发布已延迟了将近两天。但是，许多科学应用要求它们接近实时，例如国际GNSS服务（IGS）的超快速解决方案或国际VLBI服务（IVS）密集会议的分析。在这里，我们介绍了VMF1的系数，以及根据欧洲中距离天气预报中心（ECMWF）的预报数据确定并在全球网格上提供的静水压和湿天顶延迟。与从ECMWF分析数据得出的参数的比较表明，就站高而言，该协议处于1 mm高度，并且湿测图函数的差异大于静水测绘函数和静水天顶延迟的差异。这些新产品（VMF1-FC和来自预测数据的静水天顶延迟）可用于大地测量数据的实时分析，而不会显着降低准确性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号