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Proceedings Paper

Atmospheric profiles from radio occultation measurements of GPS satellites
Author(s): E. Robert Kursinski; George A. Hajj; Kenneth R. Hardy
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Paper Abstract

Atmospheric profiles can be retrieved with techniques utilizing measurements of the propagation delay of signals from Global Positioning System (GPS) satellites observed by one or more receivers in low earth orbit. The observations are made in a limb-sounding geometry when the radio path between the transmitter and receiver passes through the atmosphere. The various components of the microwave refractivity of the earth's atmosphere are described and in particular the effect of liquid water suspended in the atmosphere is examined. We briefly describe the retrieval technique and the information it provides. We then discuss the impulse response of the retrieval technique and provide an intuitive description of the effect of horizontal structure on the retrieval process. We conclude with examples of the ability to separate temperature and water vapor densities in measurements made in the lower troposphere.

Paper Details

Date Published: 19 August 1993
PDF: 12 pages
Proc. SPIE 1935, Microwave Instrumentation for Remote Sensing of the Earth, (19 August 1993); doi: 10.1117/12.152584
Show Author Affiliations
E. Robert Kursinski, Jet Propulsion Lab. (United States)
George A. Hajj, Jet Propulsion Lab. (United States)
Kenneth R. Hardy, Lockheed Missiles & Space Co., Inc. (United States)


Published in SPIE Proceedings Vol. 1935:
Microwave Instrumentation for Remote Sensing of the Earth
James C. Shiue, Editor(s)

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