4 ms·
You can get multiple devices and compare the output. Doesn't give you absolute accuracy of course. But you can set one as "master" and diff to that.
by gsich 6y ago
You can get multiple devices and compare the output. Doesn't give you absolute accuracy of course. But you can set one as "master" and diff to that.
- PaulHoule 6y agoI dunno. Back in the day when "selective availability" was turned on they added "brown noise" with strong low frequency components that would defeat attempts to use temporal averaging to approve GPS accuracy. I remember setting a receiver up outside and looking at the tracks go in circles like a spirograph.
- gsich 6y agoSelective availability is off since almost 2 decades.
- PaulHoule 6y agoThat's how long ago it was.
- gsich 6y agoYes. But what does location accuracy have in common with PPS accuracy besides that you need a fix?
- willis936 6y agoEverything! :D GPS measures the time difference between multiple satellites that broadcast their location and time. You need very accurate timing information to have accurate location. Timing error that manifests itself in PPS would also manifest itself in location data.