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  • INSTRUMENTATION AND PHOTOGRAPHY  (2)
  • 1
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    Tradeoffs among several synthetic aperture radar image quality parameters - Results of a user survey study (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The imagery obtained with the aid of synthetic aperture radars (SAR) has been applied to several remote sensing disciplines such as geologic feature mapping, oceanic phenomena studies, and land use and urban morphology studies. The successful SAR experiment on Seasat and the Shuttle demonstrated the feasibility of global radar mapping at relatively high resolution from a spaceborn platform. The present investigation is concerned with the requirements of and the tradeoffs among several SAR image quality parameters. The results are presented from a survey study concerning the interpretability of a set of SAR images. The data used to generate these images were obtained by the Seasat SAR experiments. Attention is given to image scenes and the simulation experiment, image interpretation survey results, multiple-looks, the number of looks vs resolution, and number of bits vs resolution.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Photogrammetric Engineering and Remote Sensing (ISSN 0099-1112); 49; June 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Application of dielectric constant measurements to radar imagery interpretation (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A ground-truth scheme is briefly outlined, specifically, the measurement of the dielectric constant. Two portable instruments were designed specifically for this purpose: a Q-meter for measurement of dielectric constant and loss tangent, and an instrument to measure electrical properties of the two operating frequencies of the imaging radar. Several general cases of radar-earth surfaces interaction are described; also, examples of radar imagery and some data on ice and snow are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Conference on Earth Resources Observation and Information Analysis Systems; Mar 26, 1973 - Mar 28, 1973; Tullahoma, TN
    Format: text
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    NASA TECHNICAL REPORTS
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