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Mobile robots for harsh environments provide useful means for automating the collection of research data in the field by reducing human involvement. MARVIN II has been designed and constructed to autonomously collect radar measurements to determine properties of the polar ice sheets. This paper discusses the lessons learned from a number of field(More)
We developed a Synthetic Apertur Radar (SAR) for imaging the ice-bed interface, and a wideband radar for measuring ice thickness and fine-resolution mapping of internal layers. We designed the synthetic aperture radar (SAR) to operate in bistatic or monostatic modes for generating two-dimensional re-flectivity maps of the bed, which can be used to determine(More)
A key variable in assessing the mass balance of an ice sheet is accumulation rate, Currently, accumulation rate is determined from sparsely distributed ice cores and pits. There are uncertainties in existing accumulation rates derived from these cores and pits. We developed an ultra wideband Frequency Modulated Continuous Wave (FMCW) radar for mapping(More)
During 1998, the University of Kansas Radar Systems and Remote Sensing Laborato~ performed ice thickness measurements along several flights in the southern part of Greenland. We used an improved coherent radar depth sounder operating at 150 MHz to collect these data. We obtained ice thickness data along flight lines for which no reliable thickness(More)
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