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Multichannel Coherent Radar Depth Sounder

MCoRDS quick-look near waypoint PETFLA at the southernmost point of this mission, near the central ice divide, showing detailed internal layering even prior to SAR processing

MCoRDS data collection showing significant subglacial relief associated with Dyer Plateau pyramidal nunataks

MCoRDS and snow radar data collection over a transition from grounded ice to the floating Abbott Ice Shelf, showing the change in bed echo intensity and the detailed layering of the near-surface

Multichannel Coherent Radar Depth Sounder

The Center for Remote Sensing of Ice Sheets (CReSIS) has developed radars (MCoRDS) that operate over the frequency range from 140 to 230 MHz with multiple receivers developed for airborne sounding and imaging of ice sheets. MCoRDS radars have an adjustable radar bandwidth of 20 MHz to 60 MHz. Multiple receivers permit digital beamsteering for suppressing cross-track surface clutter that can mask weak ice-bed echoes and strip-map synthetic aperture radar (SAR) images of the ice-bed interface. With 200 W of peak transmit power, a loop sensitivity > 190 dB is achieved. These radars are flown on twin engine and long-range aircraft including NASA P-3 and DC-8.

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