Retrieval of precipitable water vapor by using combined GPS/BDS/GLONASS/Galileo PPP method

doi:10.13474/j.cnki.11-2246.2020.0182

Abstract

Abstract: In order to further improve the performance of detecting precipitable water vapor (PWV) by using precise point positioning (PPP), this paper proposes a method of retrieval PWV by using GPS/BDS/GLONASS/Galileo combined PPP technology. Based on the measured data of three domestic multi-GNSS experimental project observation stations, the performance of GPS/BDS/GLONASS/Galileo combined PPP in atmospheric water vapor detection was evaluated. The experimental results show that: Compared with GPS PPP, GPS/BDS combination PPP and GPS/GLONASS combination PPP, GPS/BDS/GLONASS/Galileo combination PPP estimates the zenith tropospheric delay (ZTD) initialization time increased by 33%, 26%, 20% respectively, and it can obtain more accurate ZTD estimates and PWV information, and has better performance in atmospheric water vapor detection.

Key words: GNSS meteorology, PPP, multi-system fusion, precipitable water vapor retrieval, zenith total delay

CLC Number:

P228.4

LI Hongda, ZHANG Xianyun, LIAO Liufeng, LI Ting, NIE Shihai. Retrieval of precipitable water vapor by using combined GPS/BDS/GLONASS/Galileo PPP method[J]. Bulletin of Surveying and Mapping, 2020, 0(6): 63-66,98.

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