5. (2 points) Assume you have a portion of a Landsat 7(ETM+) scene covering the Durham...
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5. (2 points) Assume you have a portion of a Landsat 7(ETM+) scene covering the Durham County, NC. Some pertinent information about the image includes: • Path: 16 • Row: 35 Acquisition Date: July 27, 2002 Start Time Stop Time 2002:208:15:41:26.9259374 2002:208:15:41:54.0019999 • Solar Zenith Angle: 28.10970201 (the solar elevation is 61.89029799°) As the Lab#6, you select target C and D at pixel location (323, 956) and (345, 916) and get the following pixel values(DN) at four different bands: 4) Target C Target D Band 1 72 65 Target A Target B Band 2 72 65 1) Examine spectral data in the table above (wavelength versus DN) for target C and D. and determine land cover type (vegetation or building) for each of them based on their spectral characteristics. State your reasoning. 2) As in Lab#6 exercise, you calculated Gain and B values: G=0.639764 B = =-5.1 for Band 4 and G=0.621653 B=-5.0 for Band 3. Instead of using ENVI software use the Gain, B value and formula you used in the Lab#6 to calculate the radiance for Target C and D. Band 3 Target A Target B Band 3 Band 3 72 65 Band 4 3) Assume Solar Spectral Irradiances for band 3 and 4 are 1533 and 1039 watts/(meter squared * um) respectively. Instead of using ENVI software, use parameters such as solar zenith angle and formula you used in the Lab#6 to calculate the reflectance and NDVI value for Target C and D. Band 4 207 106 Band 4 ENVI 5. (2 points) Assume you have a portion of a Landsat 7(ETM+) scene covering the Durham County, NC. Some pertinent information about the image includes: • Path: 16 • Row: 35 Acquisition Date: July 27, 2002 Start Time Stop Time 2002:208:15:41:26.9259374 2002:208:15:41:54.0019999 • Solar Zenith Angle: 28.10970201 (the solar elevation is 61.89029799°) As the Lab#6, you select target C and D at pixel location (323, 956) and (345, 916) and get the following pixel values(DN) at four different bands: 4) Target C Target D Band 1 72 65 Target A Target B Band 2 72 65 1) Examine spectral data in the table above (wavelength versus DN) for target C and D. and determine land cover type (vegetation or building) for each of them based on their spectral characteristics. State your reasoning. 2) As in Lab#6 exercise, you calculated Gain and B values: G=0.639764 B = =-5.1 for Band 4 and G=0.621653 B=-5.0 for Band 3. Instead of using ENVI software use the Gain, B value and formula you used in the Lab#6 to calculate the radiance for Target C and D. Band 3 Target A Target B Band 3 Band 3 72 65 Band 4 3) Assume Solar Spectral Irradiances for band 3 and 4 are 1533 and 1039 watts/(meter squared * um) respectively. Instead of using ENVI software, use parameters such as solar zenith angle and formula you used in the Lab#6 to calculate the reflectance and NDVI value for Target C and D. Band 4 207 106 Band 4 ENVI
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1 Determine Land Cover Type To determine the land cover type vegetation or building for each target based on their spectral characteristics you can an... View the full answer
Related Book For
Economics
ISBN: 978-0073375694
18th edition
Authors: Campbell R. McConnell, Stanley L. Brue, Sean M. Flynn
Posted Date:
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