ZTD HIGH-FREQUENCY VARIATION DETECTION BASED ON
DYNAMIC PRECISE POINT POSITIONING
1)Hunan Provincial Key Laboratory of Clean Coal Resources Utilization and Mine Environmental
Protection,Hunan University of Science and Technology,Xiangtan 411201
2)The Climate Center of Hunan Province,Changsha 410119
3)Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030
Abstract:Static data were conversed as dynamic modal using dynamic Precise Point Positioning(PPP)technique.Comparison of the Zenith Tropospheric Delay(ZTD)of the dynamic PPP to the ZTD of static PPP indicates that the dynamic PPP technique by using higher sampling interval SCBs(30s or higher)can also obtain highprecision ZTDs.This study provides a new method to achieve water vapor acquisition.