Remote Detection of Gases by Gas Correlation Spectroradiometry
We will discuss here the application of a pressure modulated radiometer (PMR) to the remote sensing of trace amounts of gases in the atmosphere as well as to the direct measurement of upper atmosphere winds. The range of altitudes which may be covered with this device vary from ground level up to the lower mesosphere. Gas concentrations corresponding to a mixing ratio of 1 ppm in a 10-meter column can be sensed from geosynchronous orbit. Even higher sensitivity can be achieved at shorter distances. The PMR has an extensive history of flight testing and has been used in earth meteorological satellites, numerous high altitude balloon flights and planetary exploration spacecraft.
KeywordsAbsorption Line Flight Testing Geosynchronous Orbit Atmosphere Wind Remote Detection
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