Preparing For Antarctic Flights in the California Desert

NASA IceBridge scientists conduct GPS-guided ground tests at El Mirage to aid calibration of laser altimeter for precise readings over Antarctica.

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The constellation Ursa Major looms over a GPS-equipped survey vehicle and a ground station to its left at El Mirage Dry Lake. By comparing elevation readings from both GPS sources, researchers can build an elevation map to precisely calibrate the laser altimeter for ice thickness measurements.
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