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remote sensing
NEXTTECH-2010

NATIONAL LEVEL TECHNICAL PAPER PRESENTATION & PROJECT EXHIBITION
ST.XAVIER’S TECHNICAL INSTITUTE

REMOTE SENSING, NETWORKING

REMOTE SENSING AND NETWORKING

ABSTRACT:
Remote Sensing is a result of advances in Telecommunication & Image processing technology. Remote sensing includes collection of information from a system by either absorbing or scanning EMR which are reflected from the system. This is done without disturbing the actual system under observation. Remote sensing is used for Digital Mapping, Coastal studies, to know about environmental variations, land constituents, forest survey, etc. This paper elaborates working & applications of Remote Sensing
INTRODUCTION:
Remote Sensing is the technology of acquiring information about material objects, area, or phenomenon, without coming into physical contact with the objects, or area, or phenomenon. Without direct contact, some means of transferring information through space must be utilized. In remote sensing, information is transferred by use of electromagnetic radiation (EMR). EMR is a form of energy that reveals its presence when it strikes the matter. Remote Sensing has a sensor which can detect the electromagnetic radiation coming from an object. Remote Sensing data also enables direct observation of the land surface or any other objects at repetitive intervals and therefore allow monitoring the changes occurring in it through aerial or satellite sensor.
Electromagnetic Radiation: Emission of EMR (Electro-Magnetic Radiation) occurs from every substance. This is due to transition of electrons from one energy state to the other, leading to emission of radiation at discrete wavelengths, thus resulting into line spectrum. The wavelengths, which are emitted by atoms, are also the ones, which are absorbed by them. Emission from solids and liquids occurs when they are heated and results in a continuous spectrum. This is called Thermal Emission and it is an important

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