Daily 30-second Hatanaka-compressed GLONASS observation data

doi:10.5067/GLONASS/glonass_daily_d_001

Data Center Citation
Data Citation
Summary
Description
Data Access
Documentation

Data Center Citation

Noll, Carey E., The Crustal Dynamics Data Information System: A resource to support scientific analysis using space geodesy, Advances in Space Research, Volume 45, Issue 12, 15 June 2010, Pages 1421-1440, ISSN 0273-1177, http://dx.doi.org/10.1016/j.asr.2010.01.018.

Data Citation

International GNSS Service, Daily 30-second Hatanaka-compressed observation data, Greenbelt, MD, U.S.A: NASA Crustal Dynamics Data Information System (CDDIS), Accessed [[enter user data access date]] at doi:10.5067/GLONASS/glonass_daily_d_001.

Other standard citation formats may be used for this data set and can be found at the DOI Citation Formatter website.

More information about CDDIS data citations and acknowledgments is available.

Summary

Name: Daily 30-second Hatanaka-compressed GLONASS observation data available from the Crustal Dynamics Data Information System (CDDIS)
Format: RINEX V2, UNIX compressed ASCII
Spatial Coverage: 90.0 to -90.0, 180.0 to -180.0
Temporal Coverage: 1992-01-01 to present
Temporal Resolution: Daily
File Size: 2.5 Mbytes/site/day
Platforms: Multiple GNSS

Description

GNSS receivers collect the signals from orbiting satellites to determine their location in three dimensions and calculate precise time. GNSS receivers detect, decode, and process both pseudorange (code) and phase transmitted by the GNSS satellites. The satellites transmit the ranging codes on two or more radio-frequency carriers, allowing the locations of GNSS receivers to be determined with varying degrees of accuracy, depending on the receiver and post-processing of the data. The receivers also calculate current local time to high precision facilitating time synchronization applications.

This dataset consists of ground-based Global Navigation Satellite System (GNSS) GLONASS Combined Broadcast Ephemeris Data (daily files of all distinct navigation messages received in one day) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS provide autonomous geo-spatial positioning with global coverage. The GLONASS data sets from ground receivers at the CDDIS consist of observations from the Russian GLObal NAvigation Satellite System (GLONASS); Russia's GLONASS is similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure. The daily GLONASS broadcast ephemeris files contain one day of GLONASS navigation (30-second sampling) data in RINEX format from a global permanent network of ground-based receivers, one file per day.

Data Access

The daily 30-second GLONASS Hatanaka-compressed observation data are online:

https://cddis.nasa.gov/archive/glonass/data/daily/

in subdirectories by year, day of year, and data type as follows:

YYYY/DDD/YYd/mmmmDDD#.YYd.ZRINEX V2 code table

YYYY/DDD/YYt/XXXXMRCCC_K_YYYYDDDHHMM_01D_30S_tt.FFF.gzRINEX V3 code table

Code	Meaning
mmmm	4-character site monument name
YYYY	4-digit year
YY	2-digit year
DDD	3-digit day of year
#	sequence number (0, 1, ...) indicating multiple files within a day; typically 0
.Z	UNIX compressed file

RINEX V3 file name codes

Code	Meaning
YYYY	4-digit year
DDD	3-digit day of year
YY	2-digit year
t	type of data: b = combined broadcast ephemeris data (doi:10.5067/GNSS/gnss_daily_b_001) d = Hatanaka-compressed observation data (doi:10.5067/GNSS/gnss_daily_d_001) f = Beidou broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_f_001) g = GLONASS broadcast ephemeris data (doi:10.5067/GNSS/gnss_daily_g_001) h = SBAS broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_h_001) i = IRNSS broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_i_001) l = Galileo broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_l_001) m = meteorological data (doi:10.5067/GNSS/gnss_daily_m_001) n = GPS broadcast ephemeris data (doi:10.5067/GNSS/gnss_daily_n_001) o = observation data (doi:10.5067/GNSS/gnss_daily_o_001) q = QZSS broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_q_001) s = observation summary files (output of TEQC) (doi:10.5067/GNSS/gnss_daily_s_001) x = mixed broadcast ephemeris data(doi:10.5067/GNSS/gnss_daily_x_001)
XXXX	4-character IGS station name
M	monument or marker number (0-9)
R	receiver number (0-9)
CCC	ISO country code
K	Data source: R = From Receiver data using vendor or other software S = From data Stream (RTCM or other) U = Unknown
YYYY	4-digit Gregorian year
DDD	3-digit day of year
HH	2-digit hour
MM	2-digit minute
tt	type of data: GO = GPS Observation data RO = GLONASS Observation data EO = Galileo Observation data JO = QZSS Observation data CO = BDS Observation data IO = IRNSS Observation data SO = SBAS Observation data MO = Mixed Observation data GN = GPS Navigation data RN = GLONASS Navigation data EN = Galileo Navigation data JN = QZSS Navigation data CN = BDS Navigation data IN = IRNSS Navigation data SN = SBAS Navigation data MN = Navigation data (All GNSS Constellations) MM = Meteorological Observation
FFF	File format: rnx = RINEX crx = Hatanaka Compressed RINEX
.gz	Compressed file

Documentation

http://cddis.nasa.gov/Data_and_Derived_Products/GNSS/daily_30second_data.html