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Geometrically corrected large angle whiskbroom scanner for low earth orbiting satellites
Geometrically corrected large angle whiskbroom scanner for low earth orbiting satellites
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机译:用于低地球轨道卫星的几何校正大角度旋转扫帚扫描仪
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摘要
A scanning method and apparatus for providing a geometrically corrected large angle whiskbroom scan of a portion of the earth's surface using a linear array of radiation-sensitive detectors mounted in a low earth orbiting satellite contemplate: scanning a portion of the earth's surface with the array to define an irregularly-shaped swath on the surface which represents a field of view of the array, defining a regularly-shaped ground area of interest within the field of view of the array, dividing the area of interest into a number of pixel lines fewer in number than the number of detectors in the array and extending generally perpendicularly to the array, subdividing each pixel line into a plurality of pixels, each of which encompasses at least a portion of the field of view, selectively combining outputs from the detectors to provide a data signal representative of each pixel, and reconstructing a representation of the ground area of interest from the data signal.
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