Read the updated post instead. This post is for an archive.
Some users may find their Alpha has better positioning accuracy when they use it to work with a local (Alpha) base, comparing to working with a public VRS/CORS base.
Here is a tip for those who want to try to improve their Alpha’s positioning accuracy at getting RTK/PPK correction data from VRS/CORS.
- RTK scenario
Download and run another configuration tool GNSS Viewer. Get Alpha connected with it.
Switch to position A (left-hand side) when you are going to config Alpha.
Click “Venus 8 ->Configure GNSS Constellation Type”
Check “GPS” ONLY.
This helps in some VRS/CORS cases because the Glonass signals provided by the VRS/CORS may not include a specific field needed by Alpha to calculate coordinates. In this case, omitting bad Glonass signals and using only GPS signals helps accuracy improvement.
By choosing “Update to SRAM+FLASH”, you can configure Alpha to remember the setting of using only GPS signals at next boot, in the case you are always working with VRS/CORS.
Switch to position B (right-hand side) when you are going to use Alpha as a ROVER. Keep it at position A if you are going to use Alpha as a ROVER.
- PPK scenario
- You can also configure in RTKPOST program so that only GPS signals are used.
Let me know if this helps in your exploration with Alpha.