remote sensing ppt
TRANSCRIPT
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SEMINAR ON
REMOTE SENSING
Prepared By, Guided by,
Divyesh Patel Shafeequerrahman S. Ahmed
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INTRODUCTION• Early 1800’s – Louis Daguerre – beginning of photography• 1850s- 1900’s – Photographs taken by captive balloons, pigeons• World War I – Aerial photography• 1920s – Photogrammetry
– Routine applications for government programs
– Mapping, surveys, etc.• World War II – Use of electromagnetic spectrum increases to include
infrared and microwave• “Cold War” – extensive use of reconnaissance techniques – launching of
‘spy’ satellites• 1960s –TIROS – meteorological satellite
– First use of term “remote sensing”
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REMOTE SENSING.....
WHAT?
HOW?
WHY?
WHERE?
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What is REMOTE SENSING?
Remote Sensing is the science (and to some extent, art) of acquiring information about the Earth's surface without actually being in contact with it.
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REMOTE SENSING - PlatformPlatform Altitude(km.)
• Geostationary satellite - 36000
• Polar Orbiting satellite - 500-1000
• Space Shuttle - 240-350
• Jet Aircraft - 10-12
• Airplane - 0.3-7.5
• Ground - Few Metres
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Types of REMOTE SENSING
Active Remote Sensing Passive Remote Sensing
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How REMOTE SENSING done?
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REMOTE SENSING RECEPTION
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Why REMOTE SENSING is required?
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Earthquake Prediction
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DISADVANTAGES OF REMOTE SENSING
• Expensive to build and operate!!!! • Measurement uncertainty can be large• Data interpretation can be difficult
• need to understand theoretically how the instrument is making the measurements • need to understand measurement uncertainties • need to have some knowledge of the phenomena you are sampling
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APPLICATIONS OF REMOTE SENSING
• Agriculture• Forestry• Geology• Hydrology• Sea Ice• Land Cover & Land Use• Mapping• Oceans & Coastal Monitoring
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INDIAN REMOTE SENSINGSATELLITES
IRS-1A 17.03.1988 Technology Experiment Satellite (TES)
22.10.2001
IRS-1B 29.08.1991 IRS-P6 Resourcesat-1
17.10.2003
IRS-1E 20.09.1993 CARTOSAT -1 05.05.2005
IRS-P2 15.10.1994 CARTOSAT -2 10.01.2007
IRS-1C 28.12.1995 SRE - 1 10.01.2007
IRS-P3 21.03.1996 CARTOSAT -2A
28.04.2008
IRS-1D 29.09.1997 IMS-1 28.04.2008
IRS-P4 26.05.1999
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CONCLUSION
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THANK YOU