nya cggtts

Precise Positioning and Clock comparison

This tutorial demonstrate how CGGTTS allows the comparison of remote clocks easily.
A CGGTTS solution is simply a PVT solution formatted differently.
So basically you will need to gather the same data as PVT solution solving, the same configuration and the same constraints will apply.

In this example, we use data from stations NYA100 and NYA200 from NASA CDDIS.
The clocks are located in Spitzberg, northern Norway:

Download the data

The data that we use in this resolution, covers Day 254 of year 2023.
We'll need one precise orbit COD0OPSULT_2023251.

## Quick analysis

Run rinex-cli -i on both files

rinex-cli -i \
    -f /tmp/NYA100NOR_S_20232540000_01D_30S_MO.crx.gz

rinex-cli -i \
    -f /tmp/NYA200NOR_R_20232540000_01D_30S_MO.crx.gz

From that we can deduce that both files use state of the art receivers and the sampling rate is steady.

If you want a more thorough and exportable report, prefer --qc to -i.