| DETERMINATION OF WEIGHTED MEAN TROPOSPHERIC TEMPERATURE USING GROUND METEOROLOGICAL MEASUREMENTS |
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| 作者姓名： | LIU Yanxiong CHEN Yongqi LIU Jingnan |
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| 作者单位： | Ph.D,GPS Center,Wuhan University,129 Luoyu Road,
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| 基金项目： | ProjectsupportedbytheHongKongPolytechnicUniversityGrantWorkProgram
(GV366) |
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| 摘 要： | 1 ＩｎｔｒｏｄｕｃｔｉｏｎＩｎ ｇｒｏｕｎｄ＿ｂａｓｅｄＧＰＳＭｅｔｅｏｒｏｌｏｇｙ ,ｔｈｅ ｐｒｅｃｉｐ ｉｔａｂｌｅｗａｔｅｒｖａｐｏｒｉｓｃｏｎｖｅｒｔｅｄｆｒｏｍｔｈｅｗｅｔｚｅｎｉｔｈｄｅｌａｙｏｆｔｈｅＧＰＳｓｉｇｎａｌ.Ｑｕａｌｉｔａｔｉｖｅｌｙ ,ｔｈｅＰｒｅｃｉｐ ｉｔａｂｌｅＷａｔｅｒＶａｐｏｒ (ＰＷＶ)ｃａｎｂｅｒｅｌａｔｅｄｔｏｔｈｅＷｅｔＺｅｎｉｔｈＤｅｌａｙ (ＷＺＤ)ｂｙＰＷＶ =Ｆ·ＷＺＤＦ =1 0 6ρｖ·Ｒｖ· ｋ3Ｔｍ +ｋ2( 1 )ｗｈｅｒｅｔｈｅｍａｐｐｉｎｇｓｃａｌｅｆａｃｔ…
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| 收稿时间： | 18 October 2011 |
Determination of weighted mean tropospheric temperature using ground meteorological measurements |
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| LIU Yanxiong,CHEN Yongqi,LIU Jingnan.DETERMINATION OF WEIGHTED MEAN TROPOSPHERIC TEMPERATURE USING GROUND METEOROLOGICAL MEASUREMENTS[J].Geo-Spatial Information Science,2001,4(1):14-18. |
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| Authors: | Liu Yanxiong Ph D Chen Yongqi Liu Jingnan |
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| Institution: | LIU Yanxiong CHEN Yongqi LIU Jingnan |
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| Abstract: | The weighted mean tropospheric temperature is a critical parameter in the conversion of wet zenith delay to precipitable water vapor in GPS Meteorology.This parameter can not be calculated from the radiosonde data in real time through the conventional methods.In this study,we first discuss the admissible error of weighted mean temperature to enable the accuracy of the conversion better than 1 mm,then summarize the performance of some of the existing methods. An empirical formula is established that satisfies the real_time requirement in GPS meteorology using Sequential Regression Analysis method.It is shown that this real_time formula as compared with other empirical methods is more accurate for local applications. |
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| Keywords: | weighted mean tropospheric temperature conversion parameter sequential regression analysis |
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