REMOTE SENSING AND GIS
J.Thomas Britto
Dept of civil engineering
Thomasbritto3@gmail.com
P.R.engineering college, Thanjavur
ABSTRACT
Remote sensing is the science and art of obtaining information about an object, area phenomenon through an analysis of the data acquired by a device which is not in contact with the object, area or phenomenon under investigation. In the present context, the definition of remote sensing is restricted to mean the process of acquiring information about any object without physically contacting it in anyway regardless whether the observer is immediately adjacent to the object or millions of miles of miles away. It is further required that such sensing may be achieved in the absence of any matter in the intervening space between the object and the observer. Consequently, the information about the object, area or any phenomenon must be available in a form that can be impressed on a carrier vacuum. The information carrier, or communication link, is electromagnetic energy. Remote sensing data basically consist of wavelength intensity information acquired by collecting the electromagnetic radiation leaving the object at specific wavelength and measuring its intensity.
******
0 comments:
Post a Comment