R&S SMW-K44 User Manual page 191

Satellite Navigation
GLONASS files xxx.agl
●
Japanese Space Agency homepage
Provides QZSS or QZSS+GPS YUMA ( zzyyyyxxx.alm) or XML
(zzyyyyxxx.alm.xml) files, where
zz=q indicates the QZSS and zz=qg the QZSS+GPS files;
yyyy denotes the year and xxx the day of a year.
For detailed information on the content and frame structure of navigation data, refer to
the specifications.
RINEX download links
RINEX files are standard formats generated by Control Stations (CS) and many com-
mercial receivers. RINEX navigation files usually comprise the ephemeris sets for sev-
eral satellites with different TOE and TOC. One RINEX file is enough to describe satel-
lite orbits for a period longer than two hours and sometimes up to one day.
Use for example the following sources:
●
http://cddis.gsfc.nasa.gov/gnss_datasum.html#brdc
●
ftp://ftp.glonass-iac.ru/MCC/BRDC
●
http://qz-vision.jaxa.jp/USE/en/ephemeris
Provided are *.rnx or *.<xx>n, where <xx> denotes the year in two-digit format.
SBAS correction files download links
The *.ems and *.nstb files are files with augmentation messages broadcast by
EGNOS and WAAS.
You can find files in this format at:
●
EGNOS message server (EMS):
http://www.egnos-pro.esa.int/ems/index.html.
The provided files are hierarchy grouped per PRN (PRN#), per year (y#), per day
(d#) and per hour (h#). Each EMS file contains information on one PRN for the
time span of one hour.
Correction data is extracted form one of the loaded files; the exact PRN is configu-
rable.
●
*.ems
http://www.nstb.tc.faa.gov/DisplayNSTBDataDownload.htm.
Provided are files form different control stations. The files are grouped per day,
where each file contains information on several PRNs for the time span of 24
hours.
The downloaded files do not have an extension. Add the extension *.nstb man-
ually.
User Manual 1178.6379.02 ─ 01
Loading Historical Data
http://qz-vision.jaxa.jp/USE/en/almanac
191