A block of 24 overlapping synthetic aperture side-looking radar images flown over a well-mapped area of about 90,000 km sq covering parts of Ohio, West Virginia, Virginia, and Kentucky provided an opportunity to evaluate the mapping accuracy achieved in current radar mosaicking projects. The maps of scale 1:24 000 that are available in the imaged area permitted the study of the geometric errors of the radar mosaics and of individual radar strips. An estimate was obtained for the effect of the distribution and density of ground control points and for the accuracy of different mosaicking methods that are currently employed with synthetic aperture radar images. It is shown that a successful radar mosaicking process requires the elimination of image errors of up to several kilometers. These errors are introduced as a result of the limited precision of the inertial aircraft mavigation. An example of a radar mapping effort in which the navigation errors could be eliminated is presented. The resulting radar mosaics have residual RMS mapping erros of planimentry of about plus/minus 150 m.

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  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  United States  22046
  • Authors:
    • Leberl, F
    • Jensen, H
    • Kaplan, J A
  • Publication Date: 1976-8

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Filing Info

  • Accession Number: 00139734
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 21 1976 12:00AM