| 不同因素下的ZTD端部效应影响分析 |
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| 引用本文： | 张宇,郝金明,石鑫,于晓东.不同因素下的ZTD端部效应影响分析[J].测绘工程,2017,26(1). |
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| 作者姓名： | 张宇 郝金明 石鑫 于晓东 |
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| 作者单位： | 信息工程大学导航与空天目标工程学院,河南郑州,450001 |
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| 摘 要： | 任何平滑拟合方法对实际资料处理时均会产生端部效应,即处理结果在资料(弧)段的两端精度较差,端部效应问题,已成为区域GPS气象网准实时PWV(可降水量)解算的重要问题之一。Bernese数据处理软件在解算对流层天顶延迟方面独树一帜,以中国境内和其周边共5个IGS站2012年某天的数据为解算实例,在简要介绍Bernese解算对流层产品的基础上,采用单一变量的原则,研究分析不同截止高度角和时间分辨率对数据处理结果的端部效应影响和误差量级,并给出参考性建议。
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| 关 键 词： | 端部效应 平滑拟合 对流层天顶延迟 截止高度角 时间分辨率 |
Impact analysis of end effect with different factors in troposphere zenith delay |
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| ZHANG Yu,HAO Jinming,SHI Xin,YU Xiaodong.Impact analysis of end effect with different factors in troposphere zenith delay[J].Engineering of Surveying and Mapping,2017,26(1). |
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| Authors: | ZHANG Yu HAO Jinming SHI Xin YU Xiaodong |
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| Abstract: | Any smooth fitting method for actual material processing may produce end effect ,namely ,resultting in poorer accuracy in terms of consequence at the end of the material arc ,w hich has become one of the most important problems over regional GPS meteorological network quasi real‐time resolution related to precipitable water vapor . The Bernese software used for data processing is one of the most distinguishing methods in calculating tropospheric zenith delay .Taking five IGS stations within China and its perimeter zone with data of someday in 2012 as the example ,this paper adopts the principle of a single variable on the basis of introducing tropospheric products resolved by Bernese software ,and analyzes the end effect and its magnitude in error with different cut‐off angle and time resolution .Eventually ,some suggestions are put forward ,which provides a reference and help for GPS data processors and related professional students . |
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| Keywords: | end effect smooth fitting tropospheric zenith delay cut-off angle time resolution |
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