remote sensing ppt
TRANSCRIPT
SEMINAR ON
REMOTE SENSING
Prepared By, Guided by,
Divyesh Patel Shafeequerrahman S. Ahmed
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”
REMOTE SENSING.....
WHAT?
HOW?
WHY?
WHERE?
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.
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
Types of REMOTE SENSING
Active Remote Sensing Passive Remote Sensing
How REMOTE SENSING done?
REMOTE SENSING RECEPTION
Why REMOTE SENSING is required?
Earthquake Prediction
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
APPLICATIONS OF REMOTE SENSING
• Agriculture• Forestry• Geology• Hydrology• Sea Ice• Land Cover & Land Use• Mapping• Oceans & Coastal Monitoring
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
CONCLUSION
THANK YOU