Two months ago there was a severe spike around 2 pm Tucson time. As expected last month it had drifted to noon, and is now at 10 am. The first warning for me is that the Leica stops re-initializing (the Leica does this automatically about every ten seconds). After a few minutes it takes much longer for a horizontal shot, and the vertical prediction drops. If I lose lock, it won't initialize for another hour.
My question for the GPS gurus is, how can there be a severe spike with 15 satellites in the sky, fairly spread out (both GPS and GNSS).
> My question for the GPS gurus is, how can there be a severe spike with 15 satellites in the sky, fairly spread out (both GPS and GNSS).
Solar flares?
I'm not a GPS guru, so I'm probably wrong.....:-S
> The first warning for me is that the Leica stops re-initializing
[sarcasm]Ever since Trimble bought the Sun you will continue to have these problems until you purchase a solar flare deflection upgrade warranty[/sarcasm] :whistle:
> Two months ago there was a severe spike around 2 pm Tucson time. As expected last month it had drifted to noon, and is now at 10 am. The first warning for me is that the Leica stops re-initializing (the Leica does this automatically about every ten seconds). After a few minutes it takes much longer for a horizontal shot, and the vertical prediction drops. If I lose lock, it won't initialize for another hour.
>
> My question for the GPS gurus is, how can there be a severe spike with 15 satellites in the sky, fairly spread out (both GPS and GNSS).
Have you checked your Space Weather lately? A couple of months ago we were getting bad data at certain times of the day, coinciding with the same time you mentioned. There were bad x-ray spikes at that time of day for about an hour to 2 hours.
B-)
> My question for the GPS gurus is, how can there be a severe spike with 15 satellites in the sky...
Tedd would be able to explain more clearly than I can if he were here, sheeple. What we have here is clear evidence that government satellites are targeting Tucson with xray beams.
Seriously, I was given to understand that the Russians had recently applied a leap second to GLONASS which was not applied to GPS. This can cause some irregularies in initializations, which the latest firmware updates should fix. So it could be just a glitch in the software.
FWIW, space weather seems to be relatively benign right now.
I had considered the possibility it could be software related since I have not updated in several years, but I just hate to send the unit in for new firmware, partly because of the cost, but mostly because they re-set all of my favorite settings. I guess I better get it done. Better than losing an hour every day.
You can save ALL of the settings to your memory card, makes life easier!
SHG
>
> [sarcasm]Ever since Trimble bought the Sun you will continue to have these problems until you purchase a solar flare deflection upgrade warranty[/sarcasm]
😀 :good:
[sarcasm]Could have been worse, Autodesk could have bought it and we would all have to pay for a new seat each year even though the old one still worked.[/sarcasm]
> My question for the GPS gurus is, how can there be a severe spike with 15 satellites in the sky, fairly spread out (both GPS and GNSS).
Back when I used the System 300, occasionally I'd get 10 or even 11 satellites in view, this always took longer to fix, so I would raise the elevation mask, to knock out a few birds, and it would quickly fix every time.
It seemed that the software had too much calculating to do, with so many satellites.
Just a thought.
Yeah, most likely firmware or some setting.
Space weather/solar flares is not the problem.
Constellation is great.
There is no PDOP spike with 15 satellites.
> I had considered the possibility it could be software related since I have not updated in several years, but I just hate to send the unit in for new firmware, partly because of the cost, but mostly because they re-set all of my favorite settings. I guess I better get it done. Better than losing an hour every day.
Firmware
I had not realized my firmware was over five years out of date. That just might explain it. Worth the $900, easily. The units go off tomorrow. Thanks for the advice, guys.