关键词:
北斗卫星导航系统
大气可降水量
大气延迟
水汽探测
BeiDou satellite navigation system
PWV
troposphric delay
water vapor detection
北斗卫星导航系统
大气可降水量
大气延迟
水汽探测
Language of Keywords: English
Chinese
摘要:
The ground-based GNSS remote sensing water vapor detection got high spatial and temporal resolution atmospheric watervapordata byacquisitionsignalofsatellite navigationsystem,madeup the shortage of conventional sounding in space and time,which had important application value to the weather forecasting,climate research and artilicial influence on weather. This paper used BeiDou ex-perimental network data,combined with the radiosonde observation, made detailed comparative analysis among BeiDou, GPS and sounding system, gave the preliminary results of performance and accuracy of BeiDou vapor detection. The resutt of PWV were consistent detected by BeiDou, GPS and radio- sonde,whichwellreflectedthechangeregularity of PWV. PWVdetected byBeiDouwas morethan that of GPS,there was asystem error of2-3.3 mmbetweenthe *** twosystems were more consistent when the PWV relatively lower. There were systematic errors and standard deviation between the water vapor detection by BeiDou and radiosonde. Positioning and orbtt determination model need to be optimized. The stability of the system need to be improved. [ABSTRACT FROM AUTHOR]