Remote Sensing Lab

Remote Sensing

  • Photogeology and Remote Sensing is the science of obtaining information about an object/area through the analysis of data acquired by a device that is not in contact with the object/area under investigation.
  • Remote sensing data is interpreted on the basis of recognition element such as tone,colour,pattern,shape,size,association and shadow.
  • Human eye is best example of natural remote sensing as the Human eye collects information from only a part of the Electromagnetic radiation (visible light) reflected from the external object. The information collected on the retina is transmitted to the mind which physiologically processes these signals to form a complete picture.
Process of Acquiring data in remote sensing

Geographic Information System (GIS)

GIS is a computerized data system capable of data capture, input, manipulation, transformation, visualization, combination, query, analysis, modelling and output and is designed to capture, store, manipulate, analyze, manage and present spatial or geographic data. GIS technologies use digital information, for which various digitized data creation methods are used. The most common method of data creation is digitization, where a hard copy map or survey plan is transferred into a digital medium.

Geographic Information System (GIS)

Application OF Remote Sensing and GIS in Mineral Exploration

  • Aerial Photographs and Satellite images provides accurate, synoptic and bird eye view of the earth surface and thereby substantially contributes to the studies of earth resourses.
  • Satellite image enables direct observation of approximately 700 sq.km. area of land surface in a single satellite image and therefore allows a detailed study and interpretation of various Rock types, Geomorphic and Structural features like Fold, Fault, Lineament using recognition elements like Tone, Colour, Texture, Pattern, Shape, Size and Association.
  • Remotely Sensed data are critical for understanding earth resources as they can be collected even for the inaccessible geographic areas. Additionally, satellite data can be acquired repeatedly covering a large area.
  • Based on the above interpretation Regional Geological, Geomorphological and tectonic maps of a large area are prepared in a very short span of time.
  • These maps provide very useful information for detailed investigation aimed at mineral targeting and proximate sources of mineral wealth.