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ESS 421 - 1st half topics covered in class, reading, and labs

ESS 421 - 1st half topics covered in class, reading, and labs. Images and maps - (x,y,z, l ,t) Temporal data - Time-lapse movies Spatial data - Photos and interpretation Spectral data Electromagnetic spectrum Absorption and Beer’s law ( t =e -kz ) Transmission Reflection

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ESS 421 - 1st half topics covered in class, reading, and labs

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  1. ESS 421 - 1st halftopics covered in class, reading, and labs Images and maps - (x,y,z,l,t) Temporal data - Time-lapse movies Spatial data - Photos and interpretation Spectral data Electromagnetic spectrum Absorption and Beer’s law (t=e-kz) Transmission Reflection Scattering and Lambert’s law  R=Io(cos i)/p Interaction of light and materials Electronic processes (VNIR) - electron transition (VIS), sharing (UV), crystral field (NIR) Vibrations and overtones (SWIR-TIR) Gas, liquid, glass, crystalline Spectra of common materials leaves, soil, water, clouds, snow, iron oxides, hydrated minerals

  2. ESS 421 - 1st halfkey areas for midterm (Tuesday, 9 February 9:30-10:20) Questions may be drawn from labs, lectures, text Basic remote sensing parameters irradiance, radiance, and their units the electromagnetic spectrum thermal emission Atmospheric effects and scattering processes Scattering and reflection from surfaces Spectroscopy fundamentals Spectra of common materials

  3. Friday 4 February 2011 Class 10: Earth-orbiting satellites and Review No new reading assignment

  4. What was covered in the previous lecture • Wednesday’s lecture • 1) Spectroscopy • 2) volume interactions • - resonance • - electronic interactions • - vibrational interactions • 3) spectroscopy • - continuum vs. resonance bands • - spectral “mining” • - continuum analysis • 4) spectra of common Earth-surface materials • Today’s lecture: • Review • Satellites and orbits LECTURES Jan 05 1. Intro Jan 07 2. Images Jan 12 3. Photointerpretation Jan 14 4. Color theory Jan 19 5. Radiative transfer Jan 21 6. Atmospheric scattering Jan 26 7. Lambert’s Law Jan 28 8. Volume interactions • Feb 02 9. Spectroscopy previous • Feb 04 10. Satellites & Review today Feb 09 11. Midterm Feb 11 12. Image processing Feb 16 13. Spectral mixture analysis Feb 18 14. Classification Feb 23 15. Radar & Lidar Feb 25 16. Thermal infrared Mar 02 17. Mars spectroscopy (Matt Smith) Mar 04 18. Forest remote sensing (Van Kane) Mar 09 19. Thermal modeling (Iryna Danilina) Mar 11 20. Review Mar 16 21. Final Exam 2

  5. Orbit Platform Sensor C-130 Sputnik 1957 Sputnik 1999 EOS Sputnik 2 with Laika

  6. Airborne platforms – test beds, flexible paths SEBASS Hyperspectral TIR sensor in a Twin Otter

  7. Orbits Key elements: - eccentricity - inclination - periapsis

  8. Inclination Low inclination High inclination

  9. Hubble Space Telescope – low inclination most Shuttles - low inclination

  10. Exception: SRTM i=58º

  11. High-inclination orbits

  12. Special case – Sun-synchronous orbit (i ~ -81º) Satellite is overhead at same local solar time all year Why would you choose - late morning? - mid afternoon? - early morning?

  13. Global coverage

  14. Sensor characteristics • spatial resolution and field of view • spectral resolution • spectral coverage • number of bands • Spatial resolution depends on experiment • high – spatial detail, less emphasis on spectroscopy • moderate – environmental monitoring • low – weather, oceanography • Spectral resolution • panchromatic • multispectral • hyperspectral (imaging spectroscopy)

  15. Spectral coverage • Optical • reflected sunlight • thermal infrared • LiDAR • Microwave • passive • Radar • Gamma ray, X ray, geophysical (magnetic, gravity fields)

  16. Thematic Mapper LANDSAT – SUN-SYNCHRONOUS ORBIT

  17. Wednesday class: • Midterm, 366 JHN, 9:30 -10:20, closed book

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