POINTED WATER-VAPOR RADIOMETER CORRECTIONS FOR ACCURATE GLOBAL POSITIONING SYSTEM SURVEYING

被引：29

作者：

WARE, R

ROCKEN, C

SOLHEIM, F

VANHOVE, T

ALBER, C

JOHNSON, J

机构：

[1] UNIV CORP ATMOSPHER RES, UNIV NAVSTAR CONSORTIUM, BOULDER, CO USA

[2] UNIV COLORADO, CCAR, BOULDER, CO 80309 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 1993年 / 20卷 / 23期

关键词：

D O I：

10.1029/93GL02936

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Delay of the Global Positioning System (GPS) signal due to atmospheric water vapor is a major source of error in GPS surveying. Improved vertical accuracy is important for sea level and polar isostasy measurements, geodesy, normal fault motion, subsidence, earthquake studies, air and ground-based gravimetry, ice dynamics, and volcanology. We conducted a GPS survey using water vapor radiometers (WVRs) pointed toward GPS satellites to correct for azimuthal variations in water vapor. We report 2.6 mm vertical precision on a 50-km baseline for 19 solution days. Kalman filter or least-square corrections to the same data do not account for azimuthal distribution of water vapor and are degraded by 70%.

引用

页码：2635 / 2638

页数：4

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