Digital signal processing of UHF radio echo sounding data from northern Ellesmere Island ...

• Main Author: Prager, Bradley Thomas
• Format: Text
• Language: English
• Published: University of British Columbia 2010
• Subjects: Ellesmere Island; Ice cap; Ice Shelves
• Online Access: https://dx.doi.org/10.14288/1.0052939; https://doi.library.ubc.ca/10.14288/1.0052939

This thesis is a preliminary attempt to apply digital signal processing techniques to ice radar data. Seismic processing inspired many of the techniques: linear filtering, differentiating, automatic gain control, and stacking. The processing is designed to enhance the radar section by reducing noise and increasing the amplitude of small reflections, making reflections easier to locate. Once reflections have been located, ice thickness and reflector properties can be interpreted from the data. Ice thickness and power reflection coefficient (PRC) can always be obtained; if the depth to the reflector undergoes a sufficiently large change, the propagation loss rate of the ice can also be calculated. The processing and interpretation techniques are applied to ice radar data from a 1981 survey on northern Ellesmere Island. Ice thickness, PRC, and propagation loss rate for the following areas are calculated: Milne and Disraeli Glaciers, Milne and Ward Hunt Ice Shelves, and a small ice cap surrounding Mt. Oxford. ...