atmoshpheric effect on remote sensing data
TRANSCRIPT
BANARAS HINDU UNIVERSITYREMOTE SENSING &
GISSUBMITTED TO
DR.SUNITA SINGH SUBMITTED BY
VIVEKANAND SINGH YADAV
ATMOSPHERIC EFFECT ON
REMOTE SENSING DATA
Interactions with the Atmosphere
Scattering
ATMOSPHERIC WINDOWS
Gases absorb electromagnetic energy in very specific regions of the spectrum they influence
where(in the spectrum) we can “look” for remote sensing purpose.
Those areas of the spectrum which are not Everely influenced by atmospheric absorption and
thus are useful to remote sensors, are called atmospheric windows.
ABSORPTIONEFFECTIVE LOSS OF ENERGY TO ATMOSPHERE
CONSTITUENTS- MOST EFFICIENT ABSORBERS WATER VAPOR,CARBON
DIOXIDE AND OZONE.-ABSORPTION TAKES PLACE IN SPECIFIC WAVELENGTH
BANDS.
RADAR AND PASSIVE MICROWAVE OPERATE IN THE 1 MM TO 1 M REGION.
THE MOST EFFICIENT ABSOBERS OF SOLAR RADATION IN THIS REGRAD ARE WATER VAPOUR,CABON DIOXIDE AND
OZONE.The wavelenth ranges in which the atmosphere is particularly transmissive of energy are referred to
asAtmospheric windows.
EFFECT OF THE ATMOSPHERE
•Atmospheric composition causes wavelenght dependent absorption and scattering.
•Atmosphere effects degrade the quality of images.
•Some atmospheric effects are correctable before an image is analyzed and intepreted.
•Non selective scattering causes haze in remote sensed image.
•It is also decrease the contrast of the image.
Thank you