Data Set ID:

IceBridge POS/AV L1B Corrected Position and Attitude Data, Version 1

This data set contains georeferencing data from the Applanix 510 POS AV system flown with the Digital Mapping System (DMS) and other instruments over Greenland and Antarctica. Data parameters include latitude, longitude, altitude, velocity, roll, pitch, and heading. The data were collected as part of Operation IceBridge funded campaigns.

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Geographic Coverage

  • Platform Characteristics > Attitude Characteristics
Spatial Coverage:
N: 90, 
N: -53, 
S: 60, 
S: -90, 
E: 180, 
E: 180, 
W: -180
W: -180
Spatial Resolution: Not Specified
Temporal Coverage:
  • 27 March 2009 to 19 April 2018
(updated 2018)
Temporal Resolution: Varies
Data Format(s):
  • Binary
Platform(s) DC-8, P-3B
Sensor(s): NASA POS/AV
Version: V1
Data Contributor(s): Roseanne Dominguez

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Dominguez, R. 2010, updated 2018. IceBridge POS/AV L1B Corrected Position and Attitude Data, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: [Date Accessed].

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Full documentation for this data set is currently not available. If you have any questions regarding this data set, please contact NSIDC User Services Office either by e-mail to or by telephone at +1 303-492-6199.

NOTE to users who have downloaded the IceBridge POS/AV L1B Corrected Position and Attitude Data prior to January 25, 2011: 
As of 25 January 2011 these data have been updated to Version 01.1. Version 01.1 contains POS/AV data collected by the Applanix System connected to the DMS instrument. Prior to Version 01.1, the data were obtained from the Applanix System connected to the ATM instrument. There were no problems with the ATM version of the data, but the data were only available for flights on which ATM was operational. The DMS version is now in use for the sake of completion across all instruments.

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.

The directory structure for this data set is described in the 00READMEV01.1.txt file.

NSIDC provides two Applanix SBET file readers, and one MATLAB reader:

  • The Perl reader reads a binary SBET file and writes the data to standard output.
  • The C reader extracts only the latitude, longitude and altitude data from an SBET binary file, and outputs another binary file that can be modified for various purposes, for example to output ASCII formatted data.
  • MATLAB reader that reads Applanix aircraft data files.

For more information, please refer to the SBET_Format.pdf file.

See the POS AV Instrument Web page for more information on the POS AV instrument.

Data set DOI:

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Questions? Please contact:
NSIDC User Services
Phone: 1 303 492-6199