Focused synthetic aperture radar processing of echogram data with delay and sum antenna array processing, Greenland, 2016

• Main Authors: Paden, John, Li, Jilu
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2017
• Subjects: Radar depth sounder; Echogram; Ice thickness; Greenland; Center for Remote Sensing of Ice Sheets (CReSIS); glacier; Ice Sheet
• Online Access: https://dx.doi.org/10.18739/a26d5pb6q; https://arcticdata.io/catalog/view/doi:10.18739/A26D5PB6Q

To better understand processes affecting the ice sheets and to supply boundary condition information into ice sheet models and ice thickness for other ice sheet analysis, the Center for Remote Sensing of Ice Sheets (CReSIS) has designed, developed, and deployed a near high frequency (33-37 MHz) radar depth sounder in Greenland. An uninhabited aerial vehicle (UAV), dubbed the G1XB, was modified to carry this HF sounder. This dataset contains data collected at Russell Glacier in Greenland to demonstrate the system. This product uses focused synthetic aperture array (SAR) processing to improve resolution in along-track. The array processing technique used to combine the multiple channels is based on the periodogram method also known as delay and sum beamforming. The data product format is a Mathworks MATLAB file. Files are named according to the format: Data{$image_id}_{$frame_id}.mat. The {$image_id} is a string which may be empty when it is a composite image or is of the form “img_II” where II is the 2-digit zero-padded image number always starting with 1 and incrementing from there. The frame ID is a concatenation of the segment ID and a frame number and follows the format YYYYMMDD_SS_FFF where FFF is the frame number from 000 to 999. For example, “Data_img_01_20080630_02_001.mat” contains data for image 01 from segment 02, frame 001, taken on 2008-06-30. More information can be found in “Readme.pdf”.