Publications by authors named "John P DiMarzio"
ICESat/GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction.
IEEE Trans Geosci Remote Sens
October 2017
Article Synopsis
- NASA's ICESat, operational from 2003 to 2009, was the first satellite to provide global lidar measurements of ice sheet elevations, sea-ice thickness, and vegetation structure.
- The Geoscience Laser Altimeter System (GLAS), ICESat's main instrument, determined distances using laser pulses but faced issues with signal distortion due to a wider-than-expected range of peak power from surfaces like snow and ice.
- A solution was developed to correct this "saturation range bias" through laboratory tests and comparisons with GPS data, which effectively reduced errors in elevation measurements, especially in regions like Bolivia and Antarctica.