Image Stretching on a Curved Surface to Improve Satellite Gridding

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  • 1 Goddard Space Flight Center, NASA, Greenbelt, Md. 20771
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Abstract

A method for substantially reducing gridding errors due to satellite roll, pitch and yaw is given. A gimbal mounted curved screen, scaled to 1:7 500 000, is used to stretch the satellite image whereby visible landmarks coincide with a projected map outline. The resulting rms position errors averaged 10.7 km as compared with 25.6 and 34.9 km for two samples of satellite imagery upon which image stretching was not performed.

Abstract

A method for substantially reducing gridding errors due to satellite roll, pitch and yaw is given. A gimbal mounted curved screen, scaled to 1:7 500 000, is used to stretch the satellite image whereby visible landmarks coincide with a projected map outline. The resulting rms position errors averaged 10.7 km as compared with 25.6 and 34.9 km for two samples of satellite imagery upon which image stretching was not performed.

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