GROUND DIMENSION FROM SLANT-RANGE RADAR

Determining the horizontal ground distance between two points oriented at an angle on slant-range radar imagery requires several steps involving conversion of the slant-range component to a component in the horizontal plane, as well as applying the scale reciprocals to determine the values of the along-track and range components in terms of ground distance. Once these ground components have been calculated from the image measurements, then the resultant straight-line ground distance between the two points can be determined. A derivation with a nomograph reduces all the necessary conversion steps into one simple operation of merely multiplying the slant-range image measurement by a scale reciprocal selected from the nomograph to determine the ground distance between any two points oriented at any angle across the slant-range image, as a function of radar depression angle. The nomograph can easily be used for any imagery scale, and as such is a convenient timesaver for image analysts and interpreters. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00991112
• Corporate Authors:

  American Society of Photogrammetry

  105 North Virginia Avenue
  Falls Church, VA  United States  22046
• Authors:
  • Greer, J D
• Publication Date: 1975-8

Media Info

• Features: Figures;
• Pagination: p. 1043-46
• Serial:
  • Photogrammetric Engineering and Remote Sensing
  • Volume: 41
  • Issue Number: 8
  • Publisher: American Society for Photogrammetry and Remote Sensing
  • ISSN: 0099-1112

Subject/Index Terms

• TRT Terms: Distance; Imagery; Measurement; Nomographs; Productivity; Radar
• Uncontrolled Terms: Interpretation; Time savings
• Subject Areas: Design; Highways;

Filing Info

• Accession Number: 00125371
• Record Type: Publication
• Contract Numbers: NAS 5-21822
• Files: TRIS
• Created Date: Oct 18 1975 12:00AM