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  • 11
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    A remote sensing-aided small grains inventory using sequential Landsat imagery (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A procedure for manual acreage estimation from Landsat imagery is proposed which involves a stepwise sequence of area stratification, simple size estimation, acreage estimation, and acreage precision calculation. The sample design consists of a systematic point sample of the Landsat imagery for crop type presence calibrated by a double sample of several image points having crop season-coincident ground data. The sample point layout chosen for cost-efficiency in manual sampling is a doubly aligned point matrix. The significant advantage of this sampling approach is that crop information is available from throughout the agricultural reporting unit. For technique demonstration purposes three strata were selected for sampling. The proposed technique can complement more sophisticated computer-based acreage estimation methodologies, and refinements in the sampling techniques promise significant improvements for operational utility.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Fall Convention; Oct 26, 1975 - Oct 31, 1975; Phoenix, AZ
    Format: text
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    NASA TECHNICAL REPORTS
  • 12
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    Development of techniques for producing static strata maps and development of photointerpretation methods based on multitemporal LANDSAT data (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The progress of research conducted in support of the Large Area Crop Inventory Experiment (LACIE) is documented. Specific tasks include (1) evaluation of the static stratification procedure and modification of that procedure if warranted, and (2) the development of alternative photointerpretative techniques to the present LACIE procedures for the identification and selection of training fields (areas).
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E83-10160 , NASA-CR-167760 , NAS 1.26:167760 , SSL-SER-ISSUE-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    Labeling research in support of through-the-season area estimation (1982)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The development of LANDSAT-based through-the-season labeling procedures for corn and soybeans is discussed. A model for predicting labeling accuracy within key time periods throughout the growing season is outlined. Two methods for establishing the starting point of one key time period, viz., early season, are described. In addition, spectral-temporal characteristics for separating crops in the early season time period are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E83-10190 , NASA-CR-167804 , SR-B2-04375 , NAS 1.26:167804
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 14
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    Development of techniques for producing static strata maps and development of photointerpretive methods based on multitemporal LANDSAT data (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Progress in the evaluation of the static stratification procedure and the development of alternative photointerpretive techniques to the present LACIE procedure for the identification of training fields is reported. Statistically significant signature controlling variables were defined for use in refining the stratification procedure. A subset of the 1973-74 Kansas LACIE segments for wheat was analyzed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E83-10156 , NASA-CR-167761 , NAS 1.26:167761 , SSL-SER-18-ISSUE-60
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 15
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    Two phase sampling for wheat acreage estimation (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A two-phase Landsat-based sample allocation and wheat proportion estimation method was developed. The technique employs manual, Landsat full frame-based wheat or cultivated land proportion estimates from a large number of segments comprising a first sample phase to optimally allocate a small phase-two sample of computer or manually processed segments. Proportion estimates from each phase are then linked by regression or probability proportional to estimated size estimators to provide wheat proportion estimates and standard errors by reporting unit. Application to the Kansas Southwest CRD (Crop Reporting District) for 1974 produced a wheat acreage estimate for that CRD within 2.42% of the USDA SRS-based estimate using a lower CRD inventory budget than for a simulated reference LACIE (Large Area Crop Inventory Experiment) system.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Symposium on Remote Sensing of Environment; Apr 25, 1977 - Apr 29, 1977; Ann Arbor, MI
    Format: text
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  • 16
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    Quantitative evaluation of multiband photographic techniques Final report (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Quantitative evaluation of multiband photographic techniques using combination of black and white and color photos
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-115055
    Format: application/pdf
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  • 17
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    Agricultural interpretation technique development (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E74-10267 , NASA-CR-136653
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 18
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    Multiband photography - Forestry and agricultural applications. (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The usefulness of multiband photography in forestry and agricultural applications was evaluated by a large group of skilled photo interpreters within four California test sites. Environmental parameters selected included crop types, forest vegetation types, and tree species composition. Quantitative analyses were made of the interpretability of (1) multiband black and white photos viewed separately, (2) multiband black and white photos combined into true and false color composites, and (3) color and color infrared photos obtained simultaneously with the multiband black and white photography. Tests indicated that multiband photography consistently yielded higher interpretation accuracies than any types of single-band photography. Black and white multiband photos which were properly procured and displayed as false-color composite imagery in all cases rendered as much (or as little) information as conventional tri-emulsion color or infrared color film.
    Keywords: GEOPHYSICS
    Type: American Society of Photogrammetry, Fall Convention, Symposium on Computational Photogrammetry; Sep 07, 1971 - Sep 11, 1971; San Francisco, CA
    Format: text
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  • 19
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    Study-development of improved photointerpretative techniques to wheat identification (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10379 , NASA-CR-144630
    Format: application/pdf
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