1. CHAPTER 3 Satellites, Sensors and Data Forms FUNDAMENTALS A. Dermanis

2. LANDSAT 7 SATELLITESPOT 4 SATELLITE SATELLITES & SENSORS ETM+ Enhanced Thematic Mapper 7 bands 2 HRVIR High Resolution Visible Infrrared 4 bands A. Dermanis

3. REMOTE SENSING SATELLITES AND SENSORS Satellitefromuntilsensorsaltitude h (km) inclin. i (deg) period T (min) repeat cycle (days) Landsat 1, 2, 3 1972 (1)1983 (3)MSS, RBV9209910318 Landsat 4, 51982 (4)...MSS, TM705np98.916 Landsat 71999...ETM+705np98.916 SPOT 1, 2, 31986 (1)HRV832np10126 SPOT 41998HRVIR, VGT832np10126 NOAA 10 - 141986...AVHRR861 / 845np1 ADEOSAug 1996July 1997AVNIR, OCTS797np10141 Nimbus 7Dec 1986CZCS1000 IRS-1AMar 1988LISS-190410122 IRS-1BAug 1991LISS-290410122 IRS-P2Oct 1994LISS-210124 IRS-1C1995LISS-3, WIFS81710124 IRS-1DSep 1997LISS-3, WIFS736 / 825101 A. Dermanis

4. REMOTE SENSING SATELLITES AND SENSORS Satellitefromuntilsensorsaltitude h (km) inclin. i (deg) period T (min) repeat cycle (days) MOS-1Feb 1987MESSR, VTIR90899.117 MOS-1bFeb 1990MESSR, VTIR90899.117 RESURS-011985MSU-SK6789821 Orb View-2SeaWiFS705np98.91 GMSVISSR359000gs GOESGOES Imager359000gs Space Shuttle1983MOMS-01 Space Shuttle1993MOMS-02 Mir Space Station 1996MOMS-02P ERS-1July 1991ATSR ERS-2Apr. 1995ATSR-2 ENVISAT-11999AATSR EOS-AM-11999MODIS IkonosSept 199968198.198 A. Dermanis

5. Airborne Sensors DaedalusATMSTIMS bands00.32 – 0.38 10.38 – 0.42 20.42 – 0.45 30.45 – 0.50 40.50 – 0.55 50.55 – 0.60 60.60 – 0.65 70.65 – 0.69 80.70 – 0.79 90.80 – 0.89 100.92 – 1.10 113.0 – 5.0 128.0 –14.0 10.42 – 0.45 20.45 – 0.52 30.52 – 0.60 40.605 – 0.625 50.63 – 0.69 60.695 – 0.75 70.76 – 0.90 80.91 – 1.05 91.55 – 1.75 102.08 – 2.35 118.5 – 13.0 18.2 – 8.6 28.6 – 9.0 39.0 – 9.4 49.5 – 10.2 510.2 – 11.2 611.2 – 12.2 FOV (degrees)86 76 IFOV (mrad)2.5 dyn. range (bits)888 A. Dermanis

6. spectral region No. of bands TOTAL spectral resolution (nm) IFOV (mrad) pixels per line dynamic range (bits) GERIS0.40 – 1.08 1.0 – 2.0 2.0 – 2.5 24 7 3263 25.4 120 16.5 2.5, 3.3, 4.6512 or 102416 CASI0.4 – 0.92881.81.02 – 1.5351212 AVIRIS0.4 – 0.72 0.69 – 1.30 1.25 – 1.87 1.84 – 2.45 31 63 63224 9.7 9.6 8.8 11.6 155012 MIVIS0.433 – 0.833 1.15 – 1.55 2.00 – 2.50 8.20 – 12.70 20 8 64 10102 20 50  500 276512 MAIS0.45 – 1.1 1.40 – 2.50 8.2 – 12.2 32 771 20 30 400-800 varies8 HYDICE0.4 – 2.52067.6-14.90.532012 HYMAP0.44 – 0.88 0.881 – 1.335 1.4 – 1.81 1.95 – 2.94 128 16 13 12 16 2.5  2.0 51212 MODIS0.4 – 14.5 36 HYPERSPECTRAL SENSORS A. Dermanis

7. DATA RESOLUTION Spatial Resolution: no of pixels per ground area Increases when pixels become smaller Spectral Resolution:no of bands per wavelength Overall:increases with number of bands Locally:increases when wavelength difference between successive bands becomes smaller Temporal al Resolution:no of imaging repetitions per time Increases when days between revisiting an area become fewer Radiometric Resolution:no of values for grey tone variation = 2 p p = number of bits per single (integer) value Increases with number of bits p A. Dermanis

8. THE DATA Field Of View Instantaneous Field Of View one image for each band covering the same ground area no of bands for each band: image = matrix of pixels with R rows & C columns pixel x ij A. Dermanis

9. DATA FORMATS BSQ: Band Sequential BIL: Band Interleaved by Line BIL: Band Interleaved by Pixel A. Dermanis

10. DATA PRESENTATION The RGB Color System Each band in Black & White black  pixel value 1 (0 reserves as “no data” code) white  pixel value max (2 p ) 3 bands in a color composite red  pixel value of 1 st band green  pixel value of 2 nd band blue  pixel value of 3 rd band 1 st, 2 nd, 3 rd band = = any 3 bands in any order A. Dermanis

11. 3 2 14 3 27 4 27 5 45 7 4 Landsat Thematic Mapper 7 bands Band 1Band 2Band 3 Band 4Band 5Band 7Band 6 Color composites A. Dermanis