I have stand alone GPS points and RTK points collected at the same time and I want to compute the accuracy (1 sigma) of the GPS points. Using the haversine formula, I computed the distance between the GPS points and corresponding RTK points
De = harv(lat_rtk, log_rtk, Lat_gps, Log_gps)
then I calculated the standard deviation of
sigma_De = std(De)
I'm using the Python.
How to find the
Sigma_east. The mean of error is not zero should the mean of error added to
sigma_DE to get the true accuracy.
I tried to use mathematics format notation
$x$ but it did not work.