CAPABILITIES AND LIMITATIONS OF REMOTE SENSORS

MODERN REMOTE SENSOR IMAGERY HAS GREATLY IMPROVED IN RECENT YEARS. UNTIL RECENTLY, AIRBORNE IMAGERY, WHETHER FOR MAPPING OR INTELLIGENCE PURPOSES, WAS COLLECTED ON SUNNY, CLOUD-FREE DAYS WITHIN PREDETERMINED TIME PERIODS. NOW PASSIVE AND ACTIVE REMOTE SENSORS CAN COLLECT DATA TWENTY-FOUR HOURS A DAY IN THE VISIBLE, INFRARED AND MICROWAVE REGIONS OF THE ELECTROMAGNETIC SPECTRUM. NO INDIVIDUAL SENSOR HAS REACHED SUCH A STATE OF DEVELOPMENT THAT ITS STORE OF INFORMATION CANNOT BE INCREASED BY SUPPLEMENTAL USE OF OTHER SYSTEMS. RADAR, FOR EXAMPLE, COLLECTS ITS DATA THROUGH CLOUDS OR AT NIGHT. INFRARED SYSTEMS DETECT THERMAL VARIATIONS BETWEEN ADJACENT FEATURES. NEITHER SYSTEM, HOWEVER, APPROACHES MODERN CAMERAS IN RESOLUTION, DYNAMIC RANGE AND DETAIL. /AUTHOR/

  • Supplemental Notes:
    • Vol 30, No 6, PP 1005-1010, 9 FIG, 5 PHOT
  • Authors:
    • Leonardo, E S
  • Publication Date: 1961-10

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Filing Info

  • Accession Number: 00202864
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 28 1970 12:00AM