Rapid thinning of the Jakobshavn and a few other outlet glaciers in Greenland and the Antarctic has been observed in the past few years. The key to understanding these dramatic changes is basal conditions. None of the spaceborne radars, that have been providing a wealth of information about the ice surface, is capable of measuring ice thickness or mapping bed conditions. At the Center for Remote Sensing of Ice Sheets (CReSIS), we have developed an airborne radar system to map the internal and basal layers to obtain a 3-dimensional representation of the ice sheets in Polar Regions. We have also devised advanced signal processing techniques to overcome the effects of surface clutter.64 5.6 Calibration test set-up for the (a) 3-dB power splitter and (b) high power amplifiers . ... IQ modulator circuit. (b) In-house designed bias circuit 70 5.10 (a) Lowpass filter designed at CReSIS. (b) Measured s-parameters of the filter .
|Title||:||Dual-band Multi-channel Airborne Radar for Mapping the Internal and Basal Layers of Polar Ice Sheets|
|Author||:||Kiran C. Marathe|
|Publisher||:||ProQuest - 2008|