【摘要】 本文简要阐述了山基GPS掩星数据处理过程,介绍了雾灵山(40.60°N,117.48°E,~2118 m)山基GPS掩星观测实验的基本情况,将雾灵山山基GPS掩星折射率与探空折射率进行了比较.按照山基掩星和无线电探空在空间(经纬度)上相差在2°以内、时间上相差在1.5 h以内的条件,共选出了206个山基掩星折射率廓线样本用于比较分析.山基掩星折射率与探空折射率的个例比较,表明山基掩星折射率廓线合理,且和探空折射率基本一致.统计结果显示,在2100 m以下,山基掩星折射率与探空折射率相对偏差的平均值为-2.0%,标准偏差为7.3%.更多还原

【Abstract】 This article briefly describes the processing technology of mountain-based GPS radio occultation(MBRO) data.The MBRO experiment on Mt.Wuling(40.60°N,117.48°E,~2118 m) is introduced.Then the refractivity profiles of MBRO obtained during this experiment are compared with those of radiosonde.The MBROs that took place within 1.5 hours and 2 degrees from the radiosonde stations are choosed.Totally,206 samples for comparison analysis are obtained.The example comparison of refractivity obtained with MBRO and radiosonde shows that the refractivity profiles obtained by MBRO are reasonable and consistent with those of radiosondes.The statistical result shows that the mean and standard deviations of the relative difference between the MBRO and radiosonde below 2100m are-2.0% and 7.3%,respectively.更多还原