QUALITY AND APPLICATIONS OF AEROSPACE IMAGERY

EXPERIMENTS WITH LABORATORY AND AERIAL PHOTOGRAPHS IN COMBINATION WITH THEORETICAL CONSIDERATIONS HAVE COMPARED THE IMAGING CHARACTERISTICS OF PHOTOGRAMMETRIC CAMERA SYSTEMS WITH THOSE OF RECONNAISSANCE, MULTISPECTRAL, AND RETURN-BEAM-VIDICON SYSTEMS CONSIDERED FOR AEROSPACE USE. FROM THESE EXPERIMENTS IT IS ESTIMATED THAT PHOTOGRAMMETRIC CAMERAS IN COMBINATION WITH HIGH-QUALITY RECONNAISSANCE FILMS WILL PROVIDE HIGH-ALTITUDE AERIAL PHOTOGRAPHY WITH IMAGE QUALITIES COMPARABLE TO THOSE OBTAINED WITH RECONNAISSANCE AND MULTISPECTRAL SYSTEMS. IT ALSO SEEMS POSSIBLE TO USE CURRENTLY AVAILABLE PHOTOGRAMMETRIC CAMERA SYSTEMS IN PLACE OF RECONNAISSANCE SYSTEMS TO OBTAIN SPACE PHOTOGRAPHS OF GOOD QUALITY AT ABOUT 1:380,000 SCALE. THESE PHOTOGRAPHS WOULD BE SUITABLE FOR THE COMPILATION OF PLANIMETRIC MAPS TO 1:24,000 SCALE IF ADEQUATE VIEWING MAGNIFICATION IS AVAILABLE IN THE PLOTTING INSTRUMENT. FURTHERMORE, SUCH PHOTOGRAPHS COULD ALSO BE USED TO ESTABLISH SUPPLEMENTAL CONTROL, TO PRODUCE PHOTOMAPS AND TO MAKE REASONABLY DETAILED STUDIES OF EARTH RESOURCES. THE ECONOMIC BENEFITS OF USING SMALLER-SCALE IMAGERY FOR MAPPING TASKS INCLUDE THE REPLACEMENT OF SEVERAL OLDER PLOTTING MACHINES BY ONE PRECISION MECHANICAL-PROJECTION OR ANALYTICAL INSTRUMENT OF GREATER VERSATILITY AND ACCURACY. DETAILED EARTH RESOURCES STUDIES ARE FEASIBLE WITH IMPROVED HIGH-ALTITUDE AERIAL PHOTOGRAPHS, PARTICULARLY IF BETTER COLOR-INFRARED FILMS CAN BE MANUFACTURED. THE SMALL-SCALE SPACE-IMAGERY TO BE PRODUCED BY THE ERTS-A SYSTEM WILL BE USEFUL FOR VERY GENERALIZED REGIONAL STUDIES OF EARTH RESOURCES. SKYLAB EXPERIMENTS ARE PLANNED TO PROVIDE MULTISPECTRAL AND HIGH-RESOLUTION PHOTOGRAPHS USEFUL FOR BOTH RESOURCE STUDIES AND PHOTOMAPPING; HOWEVER, THE INCLUSION OF A METRIC CAMERA IN SKYLAB WOULD GREATLY ENHANCE ITS VALUE TO THE CARTOGRAPHER. /AUTHOR/

  • Authors:
    • Welch, R
  • Publication Date: 1972-4

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  • Accession Number: 00202978
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 7 1972 12:00AM