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  1. 1
    Integration of radar altimeter, precision navigation, and digital terrain data for low-altitude flight

    Integration of radar altimeter, precision navigation, and digital terrain data for low-altitude flight by Zelenka, Richard E.

    Moffett Field, Calif. : [Springfield, Va.] : National Aeronautics and Space Administration, Ames Research Center ; [For sale by the National Technical Information Service], 1992
    Format: Government Document Book


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  2. 2
    Appraisal of digital terrain elevation data for low-altitude flight

    Appraisal of digital terrain elevation data for low-altitude flight by Zelenka, Richard E.

    Moffett Field, Calif. : [Springfield, Va.] : National Aeronautics and Space Administration, Ames Research Center ; [For sale by the National Technical Information Service], 1992
    Format: Government Document Book


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