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为达到高度计几厘米测高精度,湿对流层校正范围为3~45 cm,精确计算湿对流层校正是至关重要的。本文利用美国国家环境预报中心(National Centers for Environmental Prediction,NCEP)数据,采用模型法计算高度计湿对流层校正。计算结果与无线电探空仪计算结果比较,偏差为0.01 cm,均方根为2 cm;与Jason-1模型法湿对流层校正产品比较,偏差为0.2 cm,均方根为1.4 cm。因此,利用NCEP数据计算高度计湿对流层校正精度较高,能够满足高度计大气湿对流层校正精度要求。为高度计大气湿对流层校正的计算提供1种新方法。
In order to achieve a few centimeters of altimeter accuracy and a wet tropospheric calibration range of 3 ~ 45 cm, accurate calculation of wet tropospheric corrections is crucial. In this paper, we use the model method to calculate altimeter wet tropospheric corrections using the National Centers for Environmental Prediction (NCEP) data. The calculated results are compared with those of the radiosonde. The deviation is 0.01 cm and the root mean square is 2 cm. Compared with the Jason-1 model wet tropospheric correction, the deviation is 0.2 cm and the root mean square is 1.4 cm. Therefore, using the NCEP data to calculate altimeter calibration accuracy of wet troposphere is high, which can meet the accuracy of atmospheric tropospheric calibration accuracy of altimeter. A New Method for Calculating Atmospheric Tropospheric Correction in Atmosphere.