NAV RINEX files

To read a RINEX 2 or 3 NAV file:

nav = gr.load('tests/demo_MN.rnx')

Returns an xarray.Dataset of the data within the RINEX 3 or RINEX 2 Navigation file. Indexed by time x quantity

Indexing

Assume the NAV data is loaded in variable nav. Select satellite(s) (here, G13) by

nav.sel(sv='G13')

Pick any parameter (say, M0) across all satellites and time (or index by that first) by:

nav['M0']

Print start, stop times and measurement interval:

python -m georinex.time ~/my.rnx

Print start, stop times and measurement interval for all files in a directory:

python -m georinex.time ~/data *.rnx

Get vector of datetime.datetime in RINEX file:

times = gr.gettimes('~/my.rnx')

The "times" variable is the Epoch / ToC (Time of Clock).