【摘要】 地基GPS气象学中,大气加权平均温度Tm作为一个重要参数,影响着GPS信号湿延迟在垂直方向上转化为大气水汽的精度。文中首先介绍了几种常用的大气加权平均温度计算方法;然后利用郑州无线电探空资料,通过线性回归方法得出郑州地区大气加权平均温度的计算模型;最后将所得模型应用到郑州地区GPS可降水量计算中。通过与无线电探空实测结果对比分析,验证了该模型的可用性。更多还原

【Abstract】 In ground-based GPS / MET, weighted mean atmospheric temperature Tmis an important parameter which influences the GPS signal wet delay in the vertical direction into the precipitable water vapor. At first, several methods are introduced, which used to calculate weighted mean atmospheric temperature. Then linear regression is made to get the empirical formula of Tmwith Zhengzhou radiosonde data. Finally, the models was applied to remote sensing atmospheric water vapor with Zhengzhou GPS data. By comparison with the radiosonde data, the availability of the models has been validated.更多还原