GROUND TEMPERATURE AND THERMAL INFRARED

ALTHOUGH INCREASINGLY IMPORTANT BECAUSE OF ITS ABILITY TO PROVIDE INFORMATION NOT READILY AVAILABLE THROUGH OTHER REMOTE SENSING TECHNIQUES, INFRARED LINE SCAN IMAGERY HANDICAPPED BY THE FACT THAT HERETOFORE EQUIPMENT SELECTIONS AND OPERATING PROCEDURES HAVE BEEN BASED ALMOST ENTIRELY ON EXPERIENCE. AN ATTEMPT IS MADE TO PROVIDE THEORETICAL FOUNDATIONS FOR THIS WORK, ESPECIALLY WITH RESPECT TO THE EFFECT THAT AVERAGE GROUND TEMPERATURE HAS ON THE APPEARANCE OF AND INFORMATION CONTAINED IN IR IMAGERY. THE MAGNITUDE OF DETECTABLE TEMPERATURE DEPENDS NOT ONLY ON THE PARAMETERS OF THE IMAGING SYSTEM BUT ALSO ON SURFACE TEMPERATURE. THEORETICAL RELATIONS BETWEEN MINIMUM DETECTABLE TEMPERATURE DIFFERENCE AND TARGET (GROUND) TEMPERATURE SHOW THAT SENSITIVITY TO TEMPERATURE CHANGES DIMINISHED AS TARGET TEMPERATURE DECREASES. INDIUM ANTIMONIDE DETECTORS ARE MOST SENSITIVE TO THIS CHANGE THAN ARE MERCURY-DOPED GERMANIUM ONES. SOME PRACTICAL EXAMPLES OF TEMPERATURE-CHANGE DETECTION ARE GIVEN.

  • Supplemental Notes:
    • Vol 36, No 10, PP 1064-1072, 10 FIG, 9 REF
  • Authors:
    • Bastuscheck, C P
  • Publication Date: 1970-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00202875
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 7 1970 12:00AM