大地测量与地球动力学2013，Vol.33Issue(3)：72-78,7.
基于插值气压的GPS反演大气可降水量研究
ESTIMATION OF PRECIPITABLE WATER VAPOR BASED ON INTERPOLATED PRESSURE DATA
摘要
Abstract
The meteorological data are obtained by pressure interpolation for the estimation of GPS precipitable water vapor (PWV) due to the lack of meteorological parameters at GPS sites.The pressure interpolation formula based on segmented height difference is derived by analyzing the relationship between the interpolated pressure at the GPS sites and the pressure at the nearby radiosonde (RS) stations,and the relationship between the interpolated pressure of the GPS sites and the height difference between the IGS stations and the nearby radiosonde stations using the standard atmosphere (SA) model.The new pressure interpolation formula has the same accuracy as the SA model,and the former is simple when the height difference is less than 100 m.GPS PWV is derived from the new pressure interpolation formula,Saastamoinen zenith hydrostatic delay (ZHD) model and the local weighted mean temperature of the atmosphere (Tm).By comparing with RS PWV,the results show that the new pressure interpolation model can be used to calculate GPS PWV with no meteorological data at GPS stations which the RMS error between GPS PWV obtained from the pressure interpolation formula based on segmented height difference and RS PWV is 1-3 mm.关键词
GPS/大气可降水量/Saastamoinen模型/气压插值/探空数据Key words
GPS/ precipitable water vapor (PWV) / Saastamoinen model / interpolation of pressure data/ radiosonde data分类
天文与地球科学引用本文复制引用
刘立龙,姚朝龙,熊思,黄良珂..基于插值气压的GPS反演大气可降水量研究[J].大地测量与地球动力学,2013,33(3):72-78,7.基金项目
国家自然科学基金(41064001) （41064001）
广西自然科学基金(2012GXNSFAA053183,2012GXNSFGA060001) （2012GXNSFAA053183,2012GXNSFGA060001）
广西研究生教育创新计划资助项目(YCSZ2013077) （YCSZ2013077）
广西空间信息与测绘重点实验室(桂科能1207115-07) （桂科能1207115-07）
