Data & Products

 

Naming

ssss = Site (4-character)
tt = Station (2-digit)
wwww = GPS week
yy = Year (2-digit)
yyyy = Year (4-digit)
mm = Month (2-digit)
mmm = Month (JAN, FEB, ... DEC)
d = Day of week (0-6)
dd = Day (2-digit)
doy = Day of year (001-366)
hh = Hours (00, 06, 12, 18)
h = Hour (a-x)
mi = Minute (2-digit)
N = version number
fre = Data frequency (e.g. 30S for 30-seconds)
t = Type of observation (M = Mixed, G = GPS, R = GLONASS)
b = Frequency band (S = S-band, X = X-band)
s = VLBI session type (K and U = 1-hour Intensive sessions, A and E = 24-hours sessions)

General products (inter-technique)


Celestial reference frames

Official webpage of IERS products

Earth orientation

Official webpage of IERS products
FTP server - International Earth rotation and reference systems service

Rapid and prediction
Monthly
  • Bulletin B files: Link to FTP (File names: bulletinb-xxx.txt, xxx = consecutive number)
Long-term

Terrestrial reference frames

FTP server IERS (Terrestrial reference frames)

Global Navigation Satellite Systems


Courtesy NASA/JPL-Caltech.

Official webpage of IGS products

Observation data

  • Hourly files:  CDDIS , KASI  (starting 2000) (folder = /yyyy/doy/hh)
  • Daily files:  CDDISKASI  (folder = /yyyy/doy/yyd),  IGNSIO  (only Rinex 2) (folder = /yyyy/doy)

File naming:

  • Daily Rinex 2: ssssdoy0.yyd (d = Hatanaka compressed, o = uncompressed)
  • Daily Rinex 3: ssssttcou_R_yyyydoyhhmi_01D_fre_tO.rnx (e.g. ALGO00CAN_R_20121601000_01D_30S_MO.rnx)
  • Hourly Rinex 2: ssssdoyh.yyd
  • Hourly Rinex 3: ssssttcou_R_yyyydoyhhmi_01H_fre_tO.rnx

Ephemerides & clocks

File naming:

  • GPS final orbits: igswwwwd.sp3
  • GPS rapid orbits: igrwwwwd.sp3
  • GPS ultra-rapid orbits: iguwwwwd_hh.sp3
  • GLONASS final orbits: iglwwwwd.sp3
  • GLONASS ultra-rapid orbits: igvwwwwd_hh.sp3
  • GPS final clocks: igswwwwd.clk

Earth rotation

  • Earth rotation parameters from GNSS: CDDIS , IGN , KASI , SIO (folder = /wwww)

File naming:

  • IGS final ERP (weekly): igswwww7.erp
  • IGS rapid ERP (daily): igrwwwwd.erp
  • IGS ultra-rapid ERP (6-hourly): iguwwwwd_hh.erp

Ionosphere products

File naming:

  • IGS final ionosphere maps (daily): igsgdoy0.yyi
  • IGS rapid ionosphere maps (daily): igrgdoy0.yyi

Troposphere products

File naming:

  • IGS total zenith path delays (daily files, data every 5 minutes): ssssdoy0.yyzpd

Satellite Laser Ranging


ggos_webpage_dataproducts_slr.jpg

Official webpage of ILRS data and products

Lunar laser ranging

Satellite laser ranging

File naming:

  • ILRS coordinates (weekly) + eop (daily): ilrsa.pos+eop.yymmdd.vN.snx

Very Long Baseline Interferometry


ggos_webpage_dataproducts_antenna.jpg

Official webpage of IVS data and products

Observation data

File naming:

  • Binary Goddard database files: yymmmddbs_V00N (e.g. 14AUG28XA_V001)
  • NGS card files: yymmmddbs_V00N

Earth orientation

Reference frames

Troposphere products

Bureau of Networks and Observations

Learn more

Bureau of Products and Standards

Learn more

Focus Area

Unified Height System

Learn more

Focus Area

Geohazards Monitoring

Learn more

Focus Area

Sea Level Change, Variability, and Forecasting

Learn more

Focus Area

Geodetic Space Weather Research

Learn more