Skip to main content

Description

SWIN files contain the VLBI fringe visibilities of an observing session (24 hours long or 1 hour long). The files are created by the International VLBI Service for Geodesy and Astrometry (IVS) correlation centers and constitute the raw output of the Distributed FX-style (DiFX) software correlator running on a Swinburne supercomputer. These data form the basis for the fringe fitting process and can also be used to make source maps of the observed quasars.

Version Description

VLBI Level 1A data in SWIN format

Product Summary

Platforms
GROUND-BASED OBSERVATIONS
Instruments
VLBI Station
Projects
IVS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2021-01-01
Data Partner
Crustal Dynamics Data Information System, Geodesy and Geophysics Laboratory, Earth Sciences Division, Sciences and Exploration Directorate, Goddard Space Flight Center, NASA (CDDIS)
Concept ID
C2042428712-CDDIS
Data State
ACTIVE
Number of Files/Granules
3305
Processing Level
1A
Science Keywords
GLOBAL COORDINATE REFERENCE SYSTEM

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

International VLBI Service for Geodesy and Astrometry (IVS). (2021). Very Long Baseline Interferometry (VLBI) SWIN data [Dataset]. NASA Crustal Dynamics Data Information System. https://doi.org/10.5067/VLBI/VLBI_L1A_SWIN_001 Date Accessed: 2026-08-12

File Naming Convention

YYYY/YYYYMMDD_exp_vVVV_swin.tar.bz2

Documents