Impact of different sampling rates on precise point positioning performance using online processing service  

作　　者：Serdar Erol Reha Metin Alkan İ.Murat Ozulu Veli Ilçi 

机构地区：[1]Department of Geomatics Engineering,Istanbul Technical University,Istanbul,Turkey [2]Department of Technical Programs,Hitit University,Çorum,Turkey [3]Department of Geomatics Engineering,Ondokuz Mayıs University,Samsun,Turkey

出　　处：《Geo-Spatial Information Science》2021年第2期302-312,I0008,共12页地球空间信息科学学报（英文）

摘　　要：In this study,the effect of different sampling rates(i.e.observation recording interval)on the Precise Point Positioning(PPP)solutions in terms of accuracy was investigated.For this purpose,a field test was carried out inÇorum province,Turkey,on 11 September 2019.Within this context,a Geodetic Point(GP)was established and precisely coordinated.A static GNSS measurement was occupied on the GP for about 4-hour time at 0.10 second(s)/10 Hz measurement intervals with the Trimble R10 geodetic grade GNSS receiver.The original observation file was converted to RINEX format and then decimated into the different data sampling rates as 0.2 s,0.5 s,1 s,5 s,10 s,30 s,60 s,and 120 s.All these RINEX observation files were submitted to the Canadian Spatial Reference System-Precise Point Positioning(CSRS-PPP)online processing service the day after the data collection date by choosing both static and kinematic processing options.In this way,PPP-derived static coordinates,and the kinematic coordinates of each measurement epoch were calculated.The PPP-derived coordinates obtained from each decimated sampling intervals were compared to known coordinates of the GP for northing,easting,2D position,and height components.According to the static and kinematic processing results,high data sampling rates did not change the PPP solutions in terms of accuracy when compared to the results obtained using lower sampling rates.The results of this study imply that it was not necessary to collect GNSS data with high-rate intervals for many surveying projects requiring cm-level accuracy.

关 键 词：Precise Point Positioning(PPP) online GNSS postprocessing service high-rate GNSS sampling rate monitoring structure behavior 

分 类 号：P228.4[天文地球—大地测量学与测量工程]