PrideLab / PRIDE-PPPAR

An open‑source software for Multi-GNSS PPP ambiguity resolution
http://pride.whu.edu.cn/
GNU General Public License v3.0
242 stars 99 forks source link

Formal errors of solutions too small - Interpretation of the cofactor matrix #22

Open matteocappuccio opened 3 months ago

matteocappuccio commented 3 months ago

Dear PRIDElab admins. We are analyzing the outputs of a multi-constellation static GNSS processing, and we are wondering about the effectiveness of its estimated error. We compute the standard deviations of the XYZ components as SigmaX/Y/Z=Sigma0*Sx/y/z. Values are in the order of10e-5 millimiters....which is nonsense. Are we doing some mistake about the dimensional interpretation of Sigma0 or of the cofactors? Could you please clarify this for us?

We thank you for your kind response.

Matteo & Luca pos_KIRU