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Use of a new high-speed digital data acquisition system in airborne ice-sounding

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3 Author(s)
Wright, D.L. ; US Geol. Survey, Denver, CO, USA ; Bradley, J.A. ; Hodge, S.M.

A high-speed digital data acquisition and signal averaging system for borehole, surface, and airborne radio-frequency geophysical measurements was designed and built by the US Geological Survey. The system permits signal averaging at rates high enough to achieve significant signal-to-noise- enhancement in profiling, even in airborne applications. The first field use of the system took place in Greenland in 1987 for recording data on a 150 by 150-km grid centered on the summit of the Greenland ice sheet. About 6000-line km were flown and recorded using the new system. The data can be used to site a proposed scientific corehole through the ice sheet

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:27 ,  Issue: 5 )