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Altimetry Using GPS-Reflection/Occultation InterferometryA Global Positioning System (GPS)- reflection/occultation interferometry was examined as a means of altimetry of water and ice surfaces in polar regions. In GPS-reflection/occultation interferometry, a GPS receiver aboard a satellite in a low orbit around the Earth is used to determine the temporally varying carrier- phase delay between (1) one component of a signal from a GPS transmitter propagating directly through the atmosphere just as the GPS transmitter falls below the horizon and (2) another component of the same signal, propagating along a slightly different path, reflected at glancing incidence upon the water or ice surface.
Document ID
20080047223
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other - NASA Tech Brief
External Source(s)
http://www.techbriefs.com/component/content/article/3367
Authors
Cardellach, Estel (California Inst. of Tech. Pasadena, CA, United States)
DeLaTorre, Manuel (California Inst. of Tech. Pasadena, CA, United States)
Hajj, George A. (California Inst. of Tech. Pasadena, CA, United States)
Ao, Chi (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
November 1, 2008
Publication Information
Publication: NASA Tech Briefs, November 2008
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NPO-41551
Distribution Limits
Public
Copyright
Public Use Permitted.

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