A simple technique for classifications of earth resources using DOPD silion
V. K. Farkua
Department of postgraduate studies and Research in
Physics, R.D University, Jabalpur -482001 India
Abstract
In this work a technique for differentiating of different earth resources -ground, grass, stone, water bodies, crops etc have been described. The emitter and collector terminals of a transistor BC 107 were coupled to a simple oscillator and amplifier circuit The top of such a transistor was cut, so that and amplifier silicon material is capable of exposure to different intensities obtained from earth resources through reflection from them, The hetum- different resources beam, infrared and visible wavelengths were reflected from different resources .The results obtained through the circuit were analyzed.
Introduction
Remote sensing implies sensing from a distance. It obtains information about objects or phenomena by a scientific device I allied sensors without any physical contact between the objects l phenomenon and the sensing device, The most modern and widely used remote sensing techniques are based, on detection or sensing f electromagnetic radiations. The gamma rays, X-rays, ultra-vamped, visible rays infrared microwaves and radio waves form the electromagnetic spectrum in ascending order of their wavelengths and all these travel with the speed of light which is 300,000 Km sec The remote sensing in particular refers to the sensing or detection of electromagnetic radiations which are reflected, scattered or emitted but an object, Consequently remote sensing techniques are based on the sensors capable of detecting and measuring the reflected, scattered or emitted radiations in the modern remote sensing, techniques the scope of utilization of the electromagnetic spectrum to a wider range has been developed so that not only of visible but non visible electromagnetic spectrum and its interaction with matter is converted into interpretable information with matter is converted into interpretable information .hence human visibility has been extended to the no visible part of the electromagnetic spectrum too. Thus these days visible, infrared and microwave regions of the electromagnetic spectrum are being used in remote sensing for inventorying .mapping and monitoring earth resources /1,2/.
In the remote sensing technique used for earth resources surveys .the reorganization and classification of objects. in based on their characteristic electromagnetic signatures. In fact all earth materials have characteristic spectral signatures. Hence the reflections are different from different materials. This reflection when falls on doted silicon produces some voltage which when amplified and detected responds to a particular earth resource. Consequently. Classification of earth resources can be done in a laboratory by this simple electronic circuit,
Experimental Technique
A transistor BC 107 was taken, it was cut at its top, so that the silicon material inside its capsule is capable of? ….
