Week4-Intro-to-sensors-sept20th-2010

Week4-Intro-to-sensors-sept20th-2010 - 9/20/2010 1...

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Unformatted text preview: 9/20/2010 1 Environmental Remote Sensing Remote Sensing Technology and Terminology What Can Be Done with RS Data? Remote Sensing of Biophysical Variables. Location and Elevation/Bathymetry Temperature Soil Moisture Foliage Biochemistry Chlorophyll Biomass (carbon) W ater Content PAR Continued What Can Be Done with RS Data? Remote Sensing of Biophysical Variables (continued) Surface Roughness Vegetation Type Land-cover class Vegetation associations Hydrological Variables Evapotranspiration Snow and Ice Extent Precipitation W ater Vapor What Can Be Done with RS Data? Remote Sensing of Biophysical Variables (continued) Atmospheric Variables Tropospheric chemistry Temperature Water Vapor Wind Speed/Direction. AND SO ON: What is your question about the surface of the Earth, or the atmosphere above it, or the geology beneath it? STEP 1: Before Any Data Can Be Ordered, Any Decisions About Platforms, Resolution, Etc. Can Be Made, or Any Analyses Contemplated, THE INVESTIGATOR MUST DETERMINE THE QUESTION HE OR SHE WISHES TO ANSWER . All Other Decisions Depend On, and Flow From, This First Step . Jensens Perspective 9/20/2010 2 Jensens Process- pretty much the labs to be completed in this course! Flow Chart Diagramming Data Process/ Operation Decision Document Preparation Display Band 4 (NIR) Band 3 (Red) NIR-Red NIR+Red NDVI Flow What Is A Digital Image? 7 0 5 3 4 1 6 4 8 4 8 5 8 1 8 8 9 1 8 7 7 9 7 7 4 5 3 8 5 9 7 7 8 4 8 6 8 5 8 5 8 0 8 2 6 9 4 4 3 2 4 5 7 2 8 6 8 2 7 8 8 8 7 9 8 6 8 7 6 5 4 0 4 1 7 5 7 9 7 8 9 3 8 6 9 3 1 0 6 1 0 6 8 4 5 6 4 3 5 8 7 5 1 0 4 1 0 4 1 0 0 1 0 1 9 5 9 1 8 3 5 1 3 9 5 6 1 0 5 1 1 0 9 7 8 8 8 4 8 5 8 7 7 7 5 9 4 4 9 6 1 0 3 8 9 7 9 7 9 7 5 7 7 7 9 7 4 7 2 8 7 9 3 9 7 9 0 8 2 7 6 7 0 6 7 6 1 7 1 7 9 8 1 8 8 9 7 9 3 8 5 7 8 7 4 7 0 7 2 8 1 7 5 7 8 8 5 9 4 9 7 9 2 8 4 8 0 7 2 Pixel What you see What your computer sees Digital Number (DN) Digital numbers (DNs) typical y range from 0 to 255; 0 to 511; 0 to 1023, etc. These ranges are binary scales: 2 8 =256; 2 9 =512; 2 10 =1024. What Is A Digital Image? 7 0 5 3 4 1 6 4 8 4 8 5 8 1 8 8 9 1 8 7 7 9 7 7 4 5 3 8 5 9 7 7 8 4 8 6 8 5 8 5 8 0 8 2 6 9 4 4 3 2 4 5 7 2 8 6 8 2 7 8 8 8 7 9 8 6 8 7 6 5 4 0 4 1 7 5 7 9 7 8 9 3 8 6 9 3 1 0 6 1 0 6 8 4 5 6 4 3 5 8 7 5 1 0 4 1 0 4 1 0 0 1 0 1 9 5 9 1 8 3 5 1 3 9 5 6 1 0 5 1 1 0 9 7 8 8 8 4 8 5 8 7 7 7 5 9 4 4 9 6 1 0 3 8 9 7 9 7 9 7 5 7 7 7 9 7 4 7 2 8 7 9 3 9 7 9 0 8 2 7 6 7 0 6 7 6 1 7 1 7 9 8 1 8 8 9 7 9 3 8 5 7 8 7 4 7 0 7 2 8 1 7 5 7 8 8 5 9 4 9 7 9 2 8 4 8 0 7 2 7 0 5 3 4 1 6 4 8 4 8 5 8 1 8 8 9 1 8 7 7 9 7 7 4 5 3 8 5 9 7 7 8 4 8 6 8 5 8 5 8 0 8 2 6 9 4 4 3 2 4 5 7 2 8 6 8 2 7 8 8 8 7 9 8 6 8 7 6 5 4 0 4 1 7 5 7 9 7 8 9 3 8 6 9 3 1 0 6 1 0 6 8 4 5 6 4 3 5 8 7 5 1 0 4 1 0 4 1 0 0 1 0 1 9 5 9 1 8 3 5 1 3 9 5 6 1 0 5 1 1 0 9 7 8 8 8 4 8 5 8 7 7 7 5 9 4 4 9 6 1 0 3 8 9 7 9 7 9 7 5 7 7 7 9 7 4 7 2 8 7 9 3 9 7 9 0 8 2...
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Week4-Intro-to-sensors-sept20th-2010 - 9/20/2010 1...

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