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IGS文件格式说明与下载方式- Renix atx ANTEX: The Antenna Exchange Format
Index of /pub/data/format
https://files.igs.org/pub/data/format/
GNSS中常用到的文件格式说明都可以在上述网站下载，包括Renix文件的各个版本 sp3 clk atx sinex等等。
在CDDIS上也有相关产品以及格式说明
GNSS product holdings
Products derived from GNSS data archived in the CDDIS are generated and submitted by the IGS analysis and associate analysis centers. IGS products support scientific research in:
- Realization of the International Terrestrial Reference Frame (ITRF)
- Monitoring deformation of the solid Earth
- Monitoring Earth rotation
- Monitoring variations in the hydrosphere (sea level, ice sheets, etc.)
- Scientific satellite orbit determination
- Monitoring the Earth’s ionosphere and troposphere
- Time and frequency transfer
IGS operational products include precise GNSS satellite ephemerides, positions and velocities of stations in the global GNSS network, EOPs (polar motion and rates, length-of-day), and station and satellite clock solutions. Other products derived from the CDDIS GNSS data holdings include troposphere Zenith Path Delay (ZPD) estimates (both dry and wet components) and global ionosphere maps, in support of IGS Working Groups or Pilot Projects.
Spatial coverage
- List of GNSS sites (Tracking Network)
- Map of GNSS sites
Temporal coverage
- GNSS orbit, station position, and EOP products since June 1992
- Troposphere Zenith Path Delay (ZPD) products since January 1997
- Ionosphere Total Electron Content (TEC) products since June 1998
Data volume
- Weekly and daily GNSS orbits, station position, and EOP files: ~1.5 Gbytes/week (compressed)
- Daily troposphere files: ~3 Mbytes/day (compressed)
- Daily ionosphere files: ~5 Mbytes/day (compressed)
Data formats
- GNSS precise orbits: SP3 and SP3c (typically) formats
- GNSS Earth rotation parameters: IGS-specified format
- GNSS station positions: Software INdependent EXchange (SINEX) format
- GNSS troposphere ZPD: IGS-specified format
- GNSS ionosphere TEC: Ionosphere Exchange (IONEX) format
Related resources
- Guide to using IGS products
- IGS Analysis Center Coordinator tips for using IGS products
- IGS data and product formats
- ITRF solutions
- Current IGS station coordinates
- IGS site logs
- IGS antenna correction file (igs14.atx)
2. atx 文件格式
atx 文件下载链接，nass的atx
https://geodesy.noaa.gov/ANTCAL/LoadFile?file=ngs14.atx
https://geodesy.noaa.gov/ANTCAL/LoadFile?file=ngs14.atxatx 文件格式说明下载链接，https://files.igs.org/pub/data/format/antex14.txt
https://files.igs.org/pub/data/format/antex14.txtatx 文件中文说明可参考(11条消息) PPP学习---天线相位中心改正文件格式学习_GNSS-by flying fish的博客-CSDN博客_antex文件15 September 2010 ANTEX: The Antenna Exchange Format, Version 1.4 *********************************************** M. Rothacher, R. Schmid Forschungseinrichtung Satellitengeod�sie TU M�nchen 1. VERSION 1.4 MODIFICATIONS The modifications leading to Version 1.4 include: - integration of Compass, QZSS and SBAS (1.4) - definition of the Galileo satellite numbers (1.4) - IGS sorting convention (1.4) - definition of the frequency number codes (1.3) - clarification of the satellite-fixed coordinate system (1.3) - IGS naming convention (1.3) - definition of the antenna corrections (1.3) - optional SVN number and COSPAR ID (1.3) - optional serial number for reference antenna (1.2) - new calibration method ROBOT (1.2) - antenna-specific SINEX CODE (1.1) 2. FILE EXTENSION It is recommended to use 'atx' as file extension. For official IGS models the following naming convention is used: mmmmm_wwww.atx | | | +------- wwww: GPS week of the last file change | +------------ mmmmm: 5-character model name (will only be changed, if existing values are changed) For official IGS models the following sorting convention is applied: SATELLITE ANTENNAS: --> sorted by satellite system (GPS -> GLONASS -> Galileo -> Compass -> QZSS -> SBAS) --> sorted by satellite code "sNN" --> sorted by 'VALID FROM' RECEIVER ANTENNAS: --> sorted by antenna code --> sorted by radome code (NONE -> other radome types) --> sorted by 'SERIAL NO' 3. DEFINITION OF THE ANTENNA CORRECTIONS In order to clarify the sign convention, the following shortened formulae are given: RECEIVER ANTENNA: mean phase center position = ARP (antenna reference point) position + phase center offset vector (given in a topocentric left-handed system: north, east and up component) observed distance = geometric distance to the mean phase center + phase center variations (zenith, azimuth) + other corrections (Here the azimuth counts clockwise from the North toward the East.) SATELLITE ANTENNA: mean phase center position = CM (center of mass) position + phase center offset vector (The phase center offset is given in a satellite-fixed right-handed coordinate system: - z-axis points toward the geocenter - y-axis (rotation axis of the solar panels) corresponds to the cross product of the z-axis with the vector from the satellite to the Sun - x-axis completes the right-handed system (x cross y = z)) observed distance = geometric distance to the mean phase center + phase center variations (nadir, azimuth) + other corrections (Here the azimuth counts clockwise from the y-axis toward the x-axis when looking in the direction of the negative z-axis or toward deep space, respectively. For the estimation of the azimuth angle under which a station is seen from the satellite, the yaw attitude (rotation about the z-axis) has to be considered. Furthermore, deviations from the nominal attitude occur during eclipse seasons when the Sun sensors fail.) 4. ANTEX VERSION 1.4 FORMAT DEFINITIONS +--------------------+------------------------------------------+------------+ | HEADER LABEL | DESCRIPTION | FORMAT | | (Columns 61-80) | | | +--------------------+------------------------------------------+------------+ |ANTEX VERSION / SYST| - Format version (1.4) | F8.1,12X, | | | - Satellite system: 'G': GPS | A1,39X | | | 'R': GLONASS | | | | 'E': Galileo | | | | 'C': Compass | | | | 'J': QZSS | | | | 'S': SBAS | | | | 'M': Mixed | | +--------------------+------------------------------------------+------------+ |PCV TYPE / REFANT | - Phase center variation type: | A1,19X, | | | 'A': absolute values | | | | 'R': relative values | | | | - Reference antenna type for relative | A20, | | | values (blank: AOAD/M_T) | | | | - Serial number of the reference antenna | A20 | | | (optional) | | +--------------------+------------------------------------------+------------+ *|COMMENT | Comment line(s) | A60 |* | | (only allowed at the specified position) | | +--------------------+------------------------------------------+------------+ |END OF HEADER | Last record in the header section. | 60X | +--------------------+------------------------------------------+------------+ |START OF ANTENNA | Record indicating the start of an antenna| 60X | | | section. | | +--------------------+------------------------------------------+------------+ |TYPE / SERIAL NO | Receiver antenna: | | | | - Antenna type: strict IGS | A20, | | | rcvr_ant.tab antenna and radome code | | | | - Serial number (blank: all representa- | A20, | | | tives of the specified antenna type) | | | | - blank | A10, | | | - blank | A10 | | | Satellite antenna: | | | | - Antenna type: strict IGS | | | | rcvr_ant.tab satellite antenna code | | | | Example: 'BLOCK IIA' | | | | - Satellite code "sNN" (blank: all | | | | representatives of the specified | | | | antenna type) | | | | For the selection of single satellites| | | | the satellite system flag ('G','R', | | | | 'E','C','J','S') together with the PRN| | | | number (GPS, Compass), the slot number| | | | (GLONASS), the SVID number (Galileo), | | | | the 'PRN number minus 192' (QZSS) or | | | | the 'PRN number minus 100' (SBAS) has | | | | to be specified. | | | | Example: 'G05' | | | | - Satellite code "sNNN" (optional) | | | | s - satellite system flag | | | | NNN - SVN number (GPS), GLONASS | | | | number, GSAT number (Galileo) | | | | or SVN number (QZSS); blank | | | | (Compass, SBAS) | | | | - COSPAR ID "YYYY-XXXA" (optional) | | | | YYYY - year of when the launch vehicle| | | | was put in orbit | | | | XXX - sequential launch vehicle | | | | number for that year | | | | A - alpha numeric sequence number | | | | within a launch | | +--------------------+------------------------------------------+------------+ |METH / BY / # / DATE| - Calibration method: | A20, | | | 'CHAMBER', 'FIELD', 'ROBOT', | | | | 'COPIED' from other antenna, | | | | 'CONVERTED' from igs_01.pcv or blank | | | | - Name of agency | A20, | | | - Number of individual antennas | I6,4X, | | | calibrated | | | | - Date | A10 | +--------------------+------------------------------------------+------------+ |DAZI | Increment of the azimuth: | 2X,F6.1, | | | 0 to 360 with increment 'DAZI' | 52X | | | (in degrees). | | | | 360 degrees have to be divisible by | | | | 'DAZI'. | | | | Common value for 'DAZI': 5.0 | | | | For non-azimuth-dependent phase center | | | | variations '0.0' has to be specified. | | +--------------------+------------------------------------------+------------+ |ZEN1 / ZEN2 / DZEN | Receiver antenna: | 2X,3F6.1, | | | Definition of the grid in zenith | 40X | | | angle: | | | | Zenith distance 'ZEN1' to 'ZEN2' with | | | | increment 'DZEN' (in degrees). 'DZEN' | | | | has to be > 0.0. | | | | 'ZEN1' and 'ZEN2' always have to be | | | | multiples of 'DZEN'. | | | | 'ZEN2' always has to be greater than | | | | 'ZEN1'. | | | | Common value for 'DZEN': 5.0 | | | | Example: ' 0.0 90.0 5.0' | | | | Satellite antenna: | | | | Definition of the grid in nadir | | | | angle: | | | | Nadir angle 'ZEN1' to 'ZEN2' with | | | | increment 'DZEN' (in degrees). 'DZEN' | | | | has to be > 0.0. | | | | 'ZEN1' and 'ZEN2' always have to be | | | | multiples of 'DZEN'. | | | | 'ZEN2' always has to be greater than | | | | 'ZEN1'. | | | | Common value for 'DZEN': 1.0 | | | | Example: ' 0.0 14.0 1.0' | | +--------------------+------------------------------------------+------------+ |# OF FREQUENCIES | Number of frequencies, for which phase | I6,54X | | | patterns are stored for the current | | | | antenna. | | +--------------------+------------------------------------------+------------+ *|VALID FROM | Start of validity period in GPS time | 5I6,F13.7, |* | | (4-digit year, month, day, hour, min, | 17X | | | sec) | | +--------------------+------------------------------------------+------------+ *|VALID UNTIL | End of validity period in GPS time | 5I6,F13.7, |* | | (4-digit year, month, day, hour, min, | 17X | | | sec) | | +--------------------+------------------------------------------+------------+ *|SINEX CODE | Name of the antenna calibration model to | A10,50X |* | | be used in the SINEX format (for | | | | referencing purposes) | | +--------------------+------------------------------------------+------------+ *|COMMENT | Comment line(s) | A60 |* | | (only allowed at the specified position) | | +--------------------+------------------------------------------+------------+ |START OF FREQUENCY | Record indicating the start of a new |3X,A1,I2,54X| | | frequency section. The satellite system | | | | flag ('G','R','E','C','J','S') has to be | | | | specified together with the frequency | | | | number code that has to be consistent | | | | with the RINEX definition: | | | | GPS: 'G01' - L1 | | | | 'G02' - L2 | | | | 'G05' - L5 | | | | GLONASS: 'R01' - G1 | | | | 'R02' - G2 | | | | Galileo: 'E01' - E1 | | | | 'E05' - E5a | | | | 'E07' - E5b | | | | 'E08' - E5 (E5a+E5b) | | | | 'E06' - E6 | | | | Compass: 'C01' - E1 | | | | 'C02' - E2 | | | | 'C07' - E5b | | | | 'C06' - E6 | | | | QZSS: 'J01' - L1 | | | | 'J02' - L2 | | | | 'J05' - L5 | | | | 'J06' - LEX | | | | SBAS: 'S01' - L1 | | | | 'S05' - L5 | | | | The frequency section includes the | | | | eccentricities of the mean antenna phase | | | | center and the phase pattern values. | | | | Neither other types of records nor | | | | comment lines are allowed within this | | | | section. | | +--------------------+------------------------------------------+------------+ |NORTH / EAST / UP | Receiver antenna: | 3F10.2,30X | | | Eccentricities of the mean antenna phase| | | | center relative to the antenna reference| | | | point (ARP). North, east and up | | | | component (in millimeters). | | | | Satellite antenna: | | | | Eccentricities of the mean antenna phase| | | | center relative to the center of mass of| | | | the satellite in X-, Y- and Z-direction | | | | (in millimeters). | | +--------------------+------------------------------------------+------------+ |(Values of a non- | The flag 'NOAZI' denotes a non-azimuth- | 3X,A5,mF8.2| |azimuth-dependent | dependent pattern that has to be | | |pattern) | specified in any case (also if 'DAZI' > | | | | 0.0). | | | | Phase pattern values in millimeters from | | | | 'ZEN1' to 'ZEN2' (with increment 'DZEN').| | | | All values on one line. | | +--------------------+------------------------------------------+------------+ *|(Values of an | The azimuth-dependent pattern has to be | F8.1,mF8.2 |* |azimuth-dependent | specified, if 'DAZI' > 0.0. The first | | |pattern) | value in each line denotes the azimuth | | | | angle followed by the phase pattern | | | | values in millimeters from 'ZEN1' to | | | | 'ZEN2' (with increment 'DZEN'). | | | | All values of one azimuth angle on one | | | | line. | | +--------------------+------------------------------------------+------------+ |END OF FREQUENCY | Record indicating the end of a frequency |3X,A1,I2,54X| | | section (see also 'START OF FREQUENCY'). | | +--------------------+------------------------------------------+------------+ *|START OF FREQ RMS | Record indicating the start of an rms |3X,A1,I2,54X|* | | value section related to the specified | | | | frequency. | | | | The section includes the rms values of | | | | the phase center eccentricities and of | | | | the phase pattern values. | | | | Neither other types of records nor | | | | comment lines are allowed within this | | | | section. | | +--------------------+------------------------------------------+------------+ *|NORTH / EAST / UP | Rms of the eccentricities (in milli- | 3F10.2,30X |* | | meters). | | +--------------------+------------------------------------------+------------+ *|(Rms values of the | The flag 'NOAZI' denotes the rms values | 3X,A5,mF8.2|* |non-azimuth- | of the non-azimuth-dependent pattern. | | |dependent pattern) | Phase pattern rms values in millimeters | | | | from 'ZEN1' to 'ZEN2' (with increment | | | | 'DZEN'). | | | | All values on one line. | | +--------------------+------------------------------------------+------------+ *|(Rms values of the | Rms values of the azimuth-dependent | F8.1,mF8.2 |* |azimuth-dependent | pattern, if 'DAZI' > 0.0. The first | | |pattern) | value in each line denotes the azimuth | | | | angle followed by the phase pattern rms | | | | values in millimeters from 'ZEN1' to | | | | 'ZEN2' (with increment 'DZEN'). | | | | All values of one azimuth angle on one | | | | line. | | +--------------------+------------------------------------------+------------+ *|END OF FREQ RMS | Record indicating the end of an rms value|3X,A1,I2,54X|* | | section (see also 'START OF FREQ RMS'). | | +--------------------+------------------------------------------+------------+ |END OF ANTENNA | Record indicating the end of an antenna | 60X | | | section. | | +--------------------+------------------------------------------+------------+ Records marked with * are optional 5. COMMENTS - For information on GPS satellites (SVN, PRN, etc.) please refer to ftp://tycho.usno.navy.mil/pub/gps/gpsb1.txt and ftp://tycho.usno.navy.mil/pub/gps/gpsb2.txt or http://gge.unb.ca/Resources/GPSConstellationStatus.txt - For information on GLONASS satellites (GLONASS number, slot number, etc.) please refer to http://www.glonass-ianc.rsa.ru/ or http://gge.unb.ca/Resources/GLONASSConstellationStatus.txt or http://web.archive.org/web/20060304211606/http://www.glonass-center.ru/hist_e.html - For information on Compass satellites please refer to http://www.beidou.gov.cn/ - For information on QZSS satellites (PRN, etc.) please refer to http://qzss.jaxa.jp/is-qzss/IS-QZSS_11_E.pdf or http://www.losangeles.af.mil/library/factsheets/factsheet.asp?id=8618 - For information on SBAS satellites (PRN, etc.) please refer to http://www.losangeles.af.mil/library/factsheets/factsheet.asp?id=8618 - For COSPAR IDs please refer to http://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp or http://ilrs.gsfc.nasa.gov/satellite_missions/list_of_satellites/gl40_general.html - For IGS standard antenna names please refer to ftp://igs.org/igscb/station/general/rcvr_ant.tab - For further antenna calibration results please refer to http://www.ngs.noaa.gov/ANTCAL/ or http://gnpcvdb.geopp.de/ 6. REFERENCES Rothacher, M., Mader, G. (2003): "Receiver and satellite antenna phase center offsets and variations." In: T�treault, P., Neilan, R., Gowey, K. (eds.) Proceedings of the Network, Data and Analysis Centre 2002 Workshop, pp. 141-152, Ottawa. (http://igs.org/igscb/resource/pubs/02_ott/session_8.pdf) Schmid, R., Mader, G., Herring, T. (2005): "From relative to absolute antenna phase center corrections." In: Meindl, M. (ed.) Proceedings of the IGS Workshop and Symposium 2004, Bern. (http://igs.org/igscb/resource/pubs/04_rtberne/Session10_1.pdf) -
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- 原文地址：https://blog.csdn.net/hyisoe/article/details/125442016