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State Remote Sensing

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BASICS OF REMOTE SENSING

Introduction : -

Remote sensing obviously implies sensing from distance .It is nothing but an extension of an eye, it is generally understood to imply the acquisition of information about object/phenomena by scientific means or devices called sensors without there being any physical contact between any sensor and object. “Remote Sensing refers to the sensing or detection of electromagnetic radiation (E.M) which are reflected/scattered or emitted by an object.” The term Remote Sensing was given by Ewlyn L. in 1960.He was a geographer. The first aerial photograph in the history was given by Fellin Tournachone nick named Nadar, when he used a balloon to photograph the Paris Suburb Prtit, on a sunny autumn day 1858.

Remote Sensing System: -
Remote Sensing has essentially come to be exploited for inventory mapping &monitoring of earth resources .The information so generated is extremely important for resources managers & decision makers. Major elements are: -

1.Data acquisition
2.Data processing &analysis

Data acquisition process: -
0 Source of energy
1 Energy in EM radiation
2 Propagation of radiation through earth station
3 Sensors (Active &Passive)
4 Platform (Air borne, Space borne & Ground borne)
Recording of Sensors either in picture form or electronically, numerical form 5 Transmission of data in India: -
Shadnagar , Hyderabad
MCU (Master Control Unit) at:-
Lucknow Shadnagar

Data processing and analysis involves following: -

1. Conversion of electronic data into pictorial form of computer compatible tapes (ccts). Acquisition of ground data comprising ancillary information and spectral signature to save a reference data. 2....