IceBridge GPS/IMU L1B Primary Position and Attitude Solution

The documentation for this data set is currently under construction and will be available in the near future. If you have any questions regarding this data set, please contact NSIDC User Services Office either by filling out a contact form, by e-mail to, or by telephone at +1 303-492-6199.

The NASA IceBridge GPS/IMU L1B Primary Position and Attitude Solution (IPUTG1B) data set contains elevation, roll, pitch, heading, north-south acceleration, east-west acceleration, and vertical acceleration measurements over Antarctica using the Systron and Donner MMQ-50 Inertial Measurement Unit (IMU) and the Topcon GB-1000 GPS+ receiver. The data were collected by scientists working on the Investigating the Cryospheric Evolution of the Central Antarctic Plate (ICECAP) project, which is funded by the National Science Foundation (NSF) and the Natural Environment Research Council (NERC) with additional support from NASA Operation IceBridge. The data are stored in ASCII text format and are available via FTP for periodic, ongoing campaigns from 12 December 2010 to the present.

Operation IceBridge products may include test flight data that are not useful for research and scientific analysis. Test flights usually occur at the beginning of campaigns. Users should read flight reports for the flights that collected any of the data they intend to use. Check IceBridge campaign Flight Reports for dates and information about test flights.

Note on 2011 Antarctica data: On 02 May 2012, V01 2011 Antarctica data were replaced by V01.1. In V01.1, additional fields were added containing low-precision real-time position and orientation data resampled to match the times of the existing geophysical samples.

The directory structure for this data set is described in the 00README.txt file.

NASA Operation IceBridge supplements the Cryospheric Evolution of the Central Antarctic Plate (ICECAP) project with additional days of survey time. See the ICECAP Web page for more on the University of Texas ICECAP project.

Data set DOI:

Data are available via FTP and HTTPS.