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

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