Determination of the Primary Specular Point in the Sunglint Pattern of a Polar-Orbiting Satellite Image

A mathematical procedure for calculating the location of the primary specular point (PSP) in polar-orbiting satellite data is described in step-by-step detail. For purposes of this discussion, the PSP is defined as 'that point on the great circle arc perpendicular to the satellite subpoint trac...

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Bibliographic Details
Main Authors: Tsui,Ted L, Fett,Robert W
Format: Report
Language:English
Subjects:
Great circle
IMAGE PROCESSING
MATHEMATICAL PREDICTION
METEOROLOGICAL SATELLITES
Numerical Mathematics
PE62759N
POLAR ORBIT TRAJECTORIES
POSITION FINDING
REFLECTION
Spacecraft Trajectories and Reentry
Spherical trigonometry
Sunglint
SUNLIGHT
TRIGONOMETRY
Unmanned Spacecraft
WU629
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Summary:A mathematical procedure for calculating the location of the primary specular point (PSP) in polar-orbiting satellite data is described in step-by-step detail. For purposes of this discussion, the PSP is defined as 'that point on the great circle arc perpendicular to the satellite subpoint track passing through the satellite subpoint and the solar subpoint where the angle of incidence of the sun's rays on a horizontal plane (measured from the local zenith) is equal to the angle of reflection of the sun's rays to the satellite in space.' The procedure can easily be developed into a small computer program that can be run on a minicomputer or on a programmable calculator. (Author)