Notes about the EPH file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The EPH file type is primarily associated with 'GPS Pathfinder Office' by Trinble Navigation Limited. The GPS Pathfinder Office software enables you to pre-plan field sessions. The data dictionary editor creates custom pick-lists, automatic repeat feature, and numeric values. In the field, the data dictionary prompts the field crew to enter specific information for data integrity and compatibility with your GIS or database. Ephemeris files contain information on the exact location and health of GPS satellites. They can be transferred from GPS receivers.