SIDE-LOOK RADAR: ITS USES AND LIMITATIONS AS A RECONNAISSANCE TOOL

THE SHORT-TIME IMAGING OF DARIEN PROVINCE, PANAMA, AND THE SUBSEQUENT ANALYSIS OF THE IMAGERY BY GEOSCIENTISTS INDICATED A GREAT POTENTIAL FOR SIDE-LOOK RADAR AS A RECONNAISSANCE TOOL IN MANY AREAS OF EARTH STUDY, PARTICULARLY WHERE CLIMATIC CONDITIONS ARE ADVERSE TO AERIAL PHOTOGRAPHY. EVALUATION OF ADDITIONAL RADAR IMAGERY FROM OTHER ENVIRONMENTS HAS DEMONSTRATED THE REALITY OF THIS POTENTIAL. RAPID, ALL-WEATHER IMAGING AND THE RESULTING SYNOPTIC, GROUND-RANGE PRESENTATION POINT TO RADAR AS A VALUABLE FIRST-LOOK TOOL. FROM ACQUISITION-SCALE IMAGERY OR FROM AN EASILY ASSEMBLED MOSAIC, RELIEF AND SLOPE DATA CAN BE OBTAINED; DRAINAGE PATTERNS AND BASINS CAN BE ACCURATELY DEFINED; AND BEDROCK GEOLOGY, SURFACE MATERIAL, AND VEGETATION STUDIES CAN BE CONDUCTED. STRUCTURAL CONFIGURATION OF BEDROCK AND FRACTURE PATTERNS CAN ALSO BE DETERMINED WITH A HIGH DEGREE OF ACCURACY. THE DUAL-POLARIZATION CAPABILITY OF RADAR PERMITS THE QUALITATIVE DETERMINATION OF SOIL MOISTURE CONTENT AND MAY PROVIDE ADDED VEGETATION DATA. THE CHARACTERISTICS OF THE RADAR SYSTEM AND THE FACTORS THAT INFLUENCE RADAR RETURN SHOULD BE KNOWN BY THE USER, NOT ONLY FOR INTERPRETATION BUT ALSO FOR MISSION PLANNING. THE ABILITY OF SIDE-LOOK RADAR TO RAPIDLY ACQUIRE DATA UNDER ALL WEATHER CONDITIONS OFFSETS THE LIMITATION OF THE RELATIVELY HIGH COST FOR SMALL-AREA SURVEYS AND A RESOLUTION CAPABILITY LESS THAN THAT OF THE AERIAL PHOTOGRAPH. THE PRIME VALUE OF RADAR IS REALIZED FROM ITS SYNOPTIC PRESENTATION IN THE EARLY STAGES OF A SURVEY.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 3-13
  • Monograph Title: Remote sensing for highway engineering
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202990
  • Record Type: Publication
  • ISBN: 030902093X
  • Files: TRIS, TRB
  • Created Date: May 15 1973 12:00AM