Technical Universityof Denmark

Radar Deployment and

Results

IIP Team

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Background• Radars

– Installation in Calgary• Measure antenna

pattern

– to measure ice thickness, image ice bed and map layers at depth

• Antennas– Twin Otter

Antenna arrays

Equipment rack

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Background-- Specifications• VHF Radar• To measure thickness, map layers

and image ice-bed interface– Center freq = 150 MHz– Bandwidth = 20

MHz – Loop sensitivity > 210 dB– Depth resolution = 3-4.5 m in

ice– Image

• Resolution – Cross-track = 40-

100 m– Along track =

100 m• Swath width

– Min = 1000 m

– Maximum~1500 m

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Sample Results

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A-scopes

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Noise problem

• The laser had to be operated to get the INS data. The laser increased the noise floor by about 10 dB every now and then (it was triggering at 5 kHz). – From Pannir on May 23, 2006

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Issues

• Calibration– To determine imbalance in channels

• Amplitude• Phase

– Ocean data• We are analyzing these data

– Noise problem• Radiated noise

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Wet surfaces

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Sample results

Depth sounder mode SAR image mosaic (Paden, 2006)

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Higher frequency

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Summary

• The mission is successful– Obtained good data for the IIP project– Collected a good data set over fast

flowing glaciers– Data are being processed.