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  • 1
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    Remote sensing of thermal radiation from an aircraft - An analysis and evaluation of crop-freeze protection methods (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Thermal images from an aircraft-mounted scanner are used to evaluate the effectiveness of crop-freeze protection devices. Data from flights made while using fuel oil heaters, a wind machine and an undercanopy irrigation system are compared. Results show that the overall protection provided by irrigation (at approximately 2 C) is comparable to the less energy-efficient heater-wind machine combination. Protection provided by the wind machine alone (at approximately 1 C) was found to decrease linearly with distance from the machine by approximately 1 C/100 m. The flights were made over a 1.5 hectare citrus grove at an altitude of 450 m with an 8-14 micron detector. General meteorological conditions during the experiments, conducted during the nighttime, were cold (at approximately -6 C) and calm with clear skies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Applied Meteorology; 20; July 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    An analysis of LANDSAT MSS scene-to-scene registration accuracy (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Measurements were made for 12 registrations done by ERL for 8 registrations done by SRS. The results indicate that the ERL method is significantly more accurate in five of the eight comparison. The difference between the two methods are not significant in the other three cases. There are two possible reasons for the differences. First, the ERL model is a piecewise linear model and the EDITOR model is a cubic polynomial model. Second, the ERL program resamples using bilinear interpolation while the EDITOR software uses a nearest neighbor resampling. This study did not indicate how much of the difference is attributable to each factor. The average of all merged scene error values for ERL was 31.6 meters and the average for the eight common areas was 32.6 meters. The average of the eight merged scene error values for SRS was 40.1 meters.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E82-10285 , NASA-TM-84694 , DC-Y1-04156 , NSTL/ERL-198 , NAS 1.15:84694
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    AgRISTARS: Interim catalog ground data summary, data acquisition year 1979 (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: To honor numerous requests for information about data holdings, and to facilitate the requirements specifications process, a series of interim catalogs are being developed. The 1979 data acquisition year is covered in this volume with subsequent years to follow under different covers. This catalog lists by state those sample segment numbers for which aircraft data has been acquired and/or field inventory products produced.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E82-10032 , NASA-CR-161033 , MU-L1-04055 , LEMSCO-16207 , JSC-17119
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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