IITC IPY Data Descriptions
Applied Research Laboratories, University of Texas at Austin
This page provides information pertaining to the tomography chain operated by the Applied Research Laboratories, University of Texas at Austin (ARL:UT) in Greenland.
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Dr. Trevor Garner
garner@arlut.utexas.edu
+1 (512) 835-3664
Applied Research Laboratories: University of Texas at Austin
P. O. Box 8029
Auston, TX 78713-8029, USA
Coherent Ionosphere Doppler Receiver (CIDR) systems measure the Doppler shift in the VHF and UHF. The relative electron content (rTEC) along the line-of-sight from the satellite to the receiver can be determined from these Doppler shifts. CIDR receivers in the polar region which are currently operational are located at:
- Sondre Stromfjord, Greenland (67.0°N, 50.9°W)
- Narsarsuaq, Greenland (61.2°N, 45.4°W)
Data coverage: At present over ten satellites are broadcasting the VHF/UHF signals. Typically, each satellite is within the CIDR field-of-view for 15-20 minutes over 160 degrees of elevation. While the data rate can be as high as 1kHz, the typical data rate is 1Hz.
Center Longitude: 48.6°W
Coverage: Greenland
NOTE: Coverage varies due to varying satellite viewing geometry.
Date of last update: 18 January 2007
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