GEOMETRIC EVALUATION OF SKYLAB S-192 CONICAL SCANNER IMAGERY

Geometric evaluation of imagery obtained by the Skylab S-192 multi-spectral conical scanner was carried out by the National Aeronautics and Space Administration, L.B. Johnson Space Center, Houston, Texas, in accordance with an overall implementation plan for sensor performance evaluation of the Skylab Earth Resources Experiment Package (EREP). The three-dimensional geometric fidelity of the S-192 scanner data, the S-192 sensor pointing accuracy from the spacecraft ephemeris data for location, and the two-dimensional reproduction of the S-192 scanner data on a screening film by the use of ephemeris data were evaluated. A dynamic mathematical model in three-dimensional space, describing the geometry of the dynamic data acquisition system of the Skylab S-192 conical scanner, was developed in order to study the geometric fidelity of the scanner data and the S-192 sensor pointing accuracy from the spacecraft ephemeris data. An affine linear transformation in two-dimensional space was employed for evaluating the accuracy of the two-dimensional reproduction of the S-192 digital data on a screening film by means of Cyber 73/Production Film Converter and by the use of spacecraft ephemeris data. Background information on the S-192 scanner, the mathematical models and their salient features, test results, limitations, and recommendations for the geometric evaluation of the S-192 scanner imagery are presented. /Author/

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  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  USA  22046
  • Authors:
    • Malhotra, R C
  • Publication Date: 1977-2

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  • Accession Number: 00149817
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 27 1977 12:00AM