Landsat Surface Reflectance Quality Assurance Extraction ...

Landsat Surface Reflectance Quality Assurance Extraction (Version 1.7)

Techniques and Methods 11?C7

U.S. Department of the Interior U.S. Geological Survey

Landsat Surface Reflectance Quality Assurance Extraction (Version 1.7)

Chapter 7 of Geographic Information Systems Tools and Applications

Book 11, Collection and Delineation of Spatial Data

Techniques and Methods 11?C7

U.S. Department of the Interior U.S. Geological Survey

U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director

U.S. Geological Survey, Reston, Virginia: 2013 Revised and reprinted: 2013

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Suggested citation: Jones, J.W., Starbuck, M.J., and Jenkerson, C.B., 2013, Landsat surface reflectance quality assurance extraction (version 1.7): U.S. Geological Survey Techniques and Methods, book 11, chap. C7, 9 p.

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Contents

Abstract............................................................................................................................................................1 Introduction.....................................................................................................................................................1 Data Access and Acquisition.......................................................................................................................3 Software Access and Acquisition...............................................................................................................3 Software Installation and Setup...................................................................................................................3 Running the Command Named "unpack_sds_bits".................................................................................4 Adding QA Data to ENVI................................................................................................................................5 Adding QA Data to ERDAS Imagine.............................................................................................................6 Reference Cited..............................................................................................................................................9

Figures

1. Screen capture showing that band names have been edited to reflect their content in the "Available Bands List" and the selection of the ENVI "Pixel-Based Mosaicking" tool (for compiling files)........................................................................................5

2. Screen capture showing that the files already loaded in ENVI must be imported into the mosaicking tool................................................................................................................5

3. Screen capture showing the display of a cloud mask on top of the other band layers as a result of importing in sequence in ENVI................................................................6

4. Screen capture showing the designation of an output file name and the specification of the background value (that is, parameter editing) in ENVI........................6

5. Screen capture showing the use of the ERDAS "Subset Image" option.............................7 6. Screen capture showing the use of the ERDAS "Export" option (see fig. 7)......................7 7. Screen capture showing how to define the ERDAS output file format................................8 8. Screen capture showing the appropriate file type and media parameter to use

when importing the output of the previous step in ERDAS.....................................................8 9. Screen capture showing the selection of BIP and unsigned 1 Bit as the

parameters to use as part of the processing in ERDAS..........................................................8 10. Screen capture showing the use of ERDAS "ImageInfo" to apply the

georeferencing information to the resulting image.................................................................8 11. Screen capture showing the specification of the spheroid and datum names

and the Universal Transverse Mercator (UTM) zone number...............................................9 12. Screen capture showing display of spectral-test-based land/water mask

(bit 11; layer 5 in ERDAS)..............................................................................................................9 13. Screen capture showing view of the individual bit values for each quality

assurance (QA) bit.........................................................................................................................9

Table

1. Bit descriptions for lndsr.filename.hdf Band 8 named "lndsr.filename.hdf" (quality assurance)......................................................................................................................................2

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Abbreviations and Acronyms

ACCA ASCII BIP CDR DOS ECV ENVI EOS ERDAS EROS ESPA GIS HDF LDOPE LEDAPS LP DAAC LSRP MODIS NASA QA SDS SR USGS UTM

Landsat Automated Cloud-Cover Assessment American Standard Code for Information Interchange Band Interleaved by Pixel climate data record disk operating system essential climate variable software package for image processing Earth Observing System software for image processing USGS Earth Resource Observation and Science Center EROS Science Processing Architecture geographic information system Hierarchical Data Format Land Data Operational Product Evaluation Landsat Ecosystem Disturbance Adaptive Processing System NASA Land Processes Distributed Active Archive Center Landsat Surface Reflectance Product Moderate Resolution Imaging Spectroradiometer National Aeronautics and Space Administration quality assurance Science Data Set surface reflectance U.S. Geological Survey Universal Transverse Mercator

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