Computer Science – Sound
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.c21a1135m&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #C21A-1135
Computer Science
Sound
0720 Glaciers, 0726 Ice Sheets, 0758 Remote Sensing, 0762 Mass Balance (1218, 1223), 0776 Glaciology (1621, 1827, 1863)
Scientific paper
The mission of Glaciers and Ice Sheets Mapping Orbiter (GISMO) radar is to measure ice thickness and map basal conditions (Jezek et al., 2006). Parts of West Antarctica and Greenland ice sheets are undergoing rapid changes. Many outlet glaciers in the southern part of the Greenland ice sheet have speeded up considerably over the last few years. One key to understanding the reason for observed changes is basal conditions. Surface clutter presents a major challenge in sounding of ice sheets and mapping of bed conditions from space. GISMO proposes to use interferometric phase filtering techniques to reduce surface clutter. The proposed radar will operate at incidence angles less than about 10 degrees for imaging the ice-bed interface from space. We are designing airborne radar for collecting data over the Greenland ice sheet to develop and test phase filtering algorithms. The radar will operate at two center frequencies; 450 MHz (P-Band) with a bandwidth of 50 MHz and 150 MHz (VHF-Band) with a bandwidth of 20 MHz. The radar consists of two transmitters and eight receivers that operate in both bands from a platform height of 10 km and an interferometric baseline between 20 m and 30 m. The 150-MHz radar operates with a peak transmit power of 800 W and 450-MHz works with 2 kW of peak power. We are upgrading the existing VHF (150 MHz) radar antenna array for operation at the center frequency of 450 MHz with a Voltage Standing Wave Ratio (VSWR) of less than 2 over a bandwidth of 50 MHz. We plan to conduct two field experiments in Greenland and Antarctica during the field seasons of 2006-2008. The radar system will be mounted on a P-3 Orion or similar aircraft. Our work will be conducted within the time frame of the International Polar Year. We would also like to explore the application of this polar sounder in the Earth System Science Partnership (ESSP), Jupiter Icy Moon Orbiter (JIMO), Mars and Lunar Sounders. In this poster we will present the hardware design and end-to-end radar system simulation results, and show a few sample results from data collected with our 150-MHz system during the 2006 field season. Jezek, K; Rodgriquez, E; Gogineni, P; Freeman, A; Curlander, J; Wu, X; Paden, J; Allen, C; Glaciers and ice sheets mapping orbiter concept, Journal of Geophysical Research, 111, E06S20, doi:10.1029/2005JE002572, 2006.
Akins T.
Allen Christine
Braaten D.
Gogineni S.,
Jara V. A.
No associations
LandOfFree
Airborne Radar Demonstrator for Imaging of Ice-Bed Interface does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Airborne Radar Demonstrator for Imaging of Ice-Bed Interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airborne Radar Demonstrator for Imaging of Ice-Bed Interface will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-960735