Clock RINEX

A Clock RINEX (CLK) file is a standardized data format used to store high-precision clock information for both GNSS satellites and ground-based receivers. These files facilitate the exchange of precise timing data, which is crucial for applications requiring accurate synchronization, such as precise positioning and timing.

CLK RINEX content and structure

CLK files contain clock offset information, representing the time differences between the recorded clock (either satellite or receiver) and a reference timescale, typically Coordinated Universal Time (UTC) or GPS time.

Similar to other RINEX files, CLK files are composed of a header section and a data section. The header provides metadata about the file, including the version, creation date, and reference timescale. The data section lists the clock offsets for each satellite and receiver at specific epochs.

The development and standardization of CLK files have been guided by the International GNSS Service (IGS) to ensure consistency and interoperability across different GNSS data processing systems.

External references

For detailed specifications and guidelines, refer to the official RINEX CLK documentation provided by the International GNSS Service (IGS):