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Infrared horizon locatorA precise method and apparatus for locating the earth's infrared horizon from space that is independent of season and latitude is described. First and second integrations of the earth's radiance profile are made from space to earth with the second delayed with respect to the first. The second integration is multiplied by a predetermined constant R and then compared with the first integration. When the two are equal the horizon is located.
Document ID
19730011748
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Jalink, A., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 2, 2013
Publication Date
January 30, 1973
Subject Category
Instrumentation And Photography
Report/Patent Number
Patent Number: US-PATENT-3,714,432
Patent Application Number: US-PATENT-APPL-SN-146935
Patent Number: NASA-CASE-LAR-10726-1
Accession Number
73N20475
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-3,714,432|NASA-CASE-LAR-10726-1
Patent Application
US-PATENT-APPL-SN-146935

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