Related Links

Important Notices:

The following websites are provided by third-party and the links are for users' convenience only. The information provided in the following websites is the responsibility of the external source. Please read the Terms and Conditions as shown in the web site of Survey and Mapping Office, Lands Department before continue browsing.

Ministry of Natural Resources of the People Republic of China (Simplified Chinese only) BeiDou Navigation Satellite System

National Geodetic Survey (NGS), US Department of Commerce Index of Online Publications GNSS Antenna Calibration Continuous Operating Reference Stations (CORS) Other Geodetic Resources

The International GNSS Service (IGS) IGS Product Availability (e.g. Clock Product, Precise Orbit, etc.) RINEX Specifications

GNSS Constellation Status BeiDou Galileo GPS GLONASS

International Terrestrial Reference Frame (ITRF)

International Earth Rotation and Reference Systems Service (IERS)

The National Marine Electronics Association (NMEA)

The Radio Technical Commission for Maritime Services (RTCM)

University NAVSTAR Consortium (UNAVCO) - TEQC Toolkit