>Make sure you have good skyview (aka good geometry) and very little
>multipath. Both effects can affect the precision of your solution
>much more than the ionospheric delay variation.
Main one is on the peak of a slate roof. Nothing else much higher
around except a large sycamore tree.
I promised a plot and here it is.
In a bit more detail:
(a) "GPSCV 800 km baseline" is single-frequency transfer between two
5071s with standard tubes. I've divided by sqrt(2), assuming both
clocks contribute equally to TOTDEV.
(b) "std tube spec" is from the 5071 manual, for comparison
(c)
