Hello,

how to input covariance matrix to JAG-3D using GNSS receivers with, for example, horizontal accuracy: 5mm+0.5ppm, vertical accuracy: 10mm+0.5ppm.

JAG3D doesn't support full variance-covariance matrices. You can define the uncertainties of the baseline component (i.e. the variance taken from the variance-covariance matrix) or a distance dependent uncertainty model, which is similar to the uncertainty model of distance-measurements. If the horizontal and the vertical components haven't equal uncertainties, you have to calculate the uncertainties by your suggestion e.g. 5mm+0.5ppm and 10mm+0.5ppm.

/Micha