Help: Minimum elevation of a satellite above the horizon

Q&A forumCategory: QuestionsHelp: Minimum elevation of a satellite above the horizon
gsgeom asked 6 months ago

Hi, I state that I am a beginner. I purchased an “RTK Calibrated Surveyor Kit”. According to Italian law, it is not possible to use satellites at an angle less than 15 degrees on the horizon. Reading the zed-f9p integration manual I saw that I have to adjust the “CFG-NAVSPG-INFIL_MINELEV” parameter but I didn’t understand how to proceed. Can anyone help me? Thank you!

vvlachak replied 6 months ago

Hello gsgeom,
You asked a question, but I found an answer. I didn’t know which parameter is for the cut-off angle. Now I know… Thanks a lot 🙂 🙂 🙂

gsgeom replied 6 months ago

And now I know that in English the angle on the horizon is called the “cut-off angle”. Apparently google translator works. Thank you.

3 Answers
clive1 answered 6 months ago

I’d assume it would depend on the application and dependency on the outcome. I’ll assume a Professional Engineering or Survey report type application.
In uCenter you can change the parameters via View > Series 9 Advanced Configuration, and go set the appropriate values.
Also, for the time being, UBX-CFG-NAV5 could be used to select minimum elevation, minimum signal strengths, and satellite counts, etc.

ALBERTO FALAVIGNA answered 5 months ago
Ok thanks for the useful information (I'm Italian).
How do I proceed correctly to set the minimum degrees of elevation for the setting to be stored permanently?
Perhaps it is necessary to operate in the following way:
1) in view \ configuration view \ nav5-> put in “input filter navigation” 15 (degrees) in the box “min sv elevation - click on the“ send ”button;
2) in vista \ configuration view \ cfg -> put a check mark in "save current configuration" and click again on the "send" button with flash / BBr selected.

I made it too long!
Is there a faster and / or correct method?
clive1 replied 5 months ago

setelv15.txt (setting to BBR, FLASH and RAM)
CFG-SETVAL – 06 8A 09 00 00 07 00 00 A4 00 11 20 0F

ALBERTO FALAVIGNA answered 5 months ago

OK thanks clive1. Your suggestion is very interesting.