The Network RTK Integrity Monitoring (IM) system comprises three monitoring stations located at Fanling (HKFN), Quarry Bay (HKQT), and Tate’s Cairn (TCHK). These stations
continuously monitor the performance of the SatRef Network RTK service by comparing RTK-surveyed coordinates with control coordinates. The real-time data streams of these RTK-surveyed coordinates are disseminated
in NMEA format via the Open Data Portal and the CSDI Portal, and can be accessed by means of NTRIP with the following settings.
Please read the Terms and Conditions of the corresponding Portal before using the service.
| Hostname: | ntrip.geodetic.gov.hk |
| Port: | 2101 |
| #Username and Password: | No Username and Password are required |
#Remarks: Some NTRIP client may not support nil input for the Username and Password fields. User may login using Username: "psi_user" and Password: "psi" instead.
NMEA-0183 Standard is used in this service. The rate of Mountpoint is 0.1 Hz.The NMEA-0183 GGA message string includes UTC of position fix, Latitude, Longitude, GPS Quality indicator, and other related data. For more details, please refer to the NMEA-0183 message: GGA documentation
| Mountpoint | Location of Station | NMEA-0183 Message | Site Log |
| HKFN_NMEA | Fanling | GGA | HKFN |
| HKQT_NMEA | Quarry Bay | GGA | HKQT |
| TCHK_NMEA | Tate's Cairn | GGA | TCHK |
| Tel : | (852) 3168 2666 |
| Fax : | (852) 3168 2668 |
| Email : | geodetic@landsd.gov.hk |