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  • 1
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    Geometric correction of Landsat 4 and 5 Thematic Mapper data (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Landsat-4 was launched on July 16, 1982, while the launch of Landsat-5 took place on March 1, 1984. The earth-observing instruments employed were the Multispectral Scanner (MSS), which has flown since 1972 on Landsat satellites, and the Thematic Mapper (TM). The TM provides improved spatial radiance and spectral resolution. The improved capabilities of the TM, the use of different scanning mechanisms relative to the MSS, and the use of a new spacecraft with different mechanical operating characteristics led to a significant challenge in processing the TM and MSS data. The current paper has mainly the objective to present recent results which can provide information regarding the quality of processing as measured against specifications. The results obtained so far for the Thematic Mapper Image Processing System (TIPS), though limited, are found to be quite encouraging as far as the geometric processing of the TM is concerned.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Format: text
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  • 2
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    An Overview of the Thematic Mapper Geometric Correction System (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-12
    Description: The processing concepts which form the basis of the Thematic Mapper (TM) Geometric Correction System are examined. The principle flight and ground segment subsystems are discussed. Correction data is generated and compared to TM image data. Geometric accuracy is defined and investigated along with a general system overview.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center LANDSAT-4 Sci. Invest. Summ., Including Dec. 1983 Workshop Results, Vol. 1; p 92-100
    Format: text
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  • 3
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    An overview of the thematic mapper geometric correction system (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Geometric accuracy specifications for LANDSAT 4 are reviewed and the processing concepts which form the basis of NASA's thematic mapper geometric correction system are summarized for both the flight and ground segments. The flight segment includes the thematic mapper instrument, attitude measurement devices, attitude control, and ephemeris processing. For geometric correction the ground segment uses mirror scan correction data, payload correction data, and control point information to determine where TM detector samples fall on output map projection systems. Then the raw imagery is reformatted and resampled to produce image samples on a selected output projection grid system.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E83-10206 , NASA-CR-170052 , NAS 1.26:170052
    Format: application/pdf
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  • 4
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    Geometric correction process for the Landsat-4 Thematic Mapper (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The processing approaches which form the basis of the Landsat-4 Thematic Mapper (TM) geometric correction system are summarized. The correction is accomplished in two phases. In the first phase, correction data are generated. The spacecraft position, TM frame attitude, TM scanning mirror position, and detector sampling are found as a function of time through a combination of flight segment measurements, ground segment modeling, and control point information. The data, along with the earth position and geoid model, are used to determine the earth location for each TM image sample. Then, using map projections, correction data can be generated which define the location of each TM image sample on the output coordinate system. In the second phase, the correction data are used to resample TM detector samples onto the output coordinate system.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: 1983 International Geoscience and Remote Sensing Symposium (IGARSS ''83); Aug 31, 1983 - Sep 02, 1983; San Francisco, CA
    Format: text
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  • 5
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    Thematic Mapper geometric correction processing (1984)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: The Thematic Mapper Image Processing System is described from the point of view of geometric correction. The system performance requirements are discussed, and the Landsat-D flight segment is described. The ground processing and overall geometric system performance is addressed. Those aspects of the Thematic Mapper Image Processing System that differ significantly from those of the MSS System are emphasized.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: International Symposium on Remote Sensing of Environment; May 09, 1983 - May 13, 1983; Ann Arbor, MI
    Format: text
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  • 6
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    Landsat D Thematic Mapper image resampling for scan geometry correction (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Landsat D system is described, and the geometric correction processing for the Thematic Mapper (TM) is reviewed. The resampling procedure (the generation of a TM output image) is analyzed with emphasis on the effect of sampling geometry on output image. Effects of scan gaps and spacecraft jitter on output image are studied by means of a simulation of the sampling and resampling processes for three sampling geometries. Visual inspection of the resampling results shows that the resampling algorithm works excellently under all conditions and that distortion is visible only in the rare case of large gaps between scans.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Machine processing of remotely sensed data with special emphasis on range, forest, and wetlands assessment; Jun 23, 1981 - Jun 26, 1981; West Lafayette, IN
    Format: text
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