01-02-2013, 12:00 PM
Introduction to Remote Sensing & GIS
1Remote Sensing.ppt (Size: 2.44 MB / Downloads: 58)
Remote Sensing Defined
Remote Sensing is:
“The art and science of obtaining information about an object without being in direct contact with the object” (Jensen 2000).
There is a medium of transmission involved.
Remote Sensing Defined
Environmental Remote Sensing:
… the collection of information about Earth surfaces and phenomena using sensors not in physical contact with the surfaces and phenomena of interest.
We will focus on data collected from an overhead perspective via transmission of electromagnetic radiation.
Geographic Information System
An Information System that is used to input, store , retrieve, manipulate, analyze and output geographically referenced data or geospatial data, in order to support decision making for planning and management of land use, natural resources, environment, transportation, urban facilities, and other administrative records
Benefits of GIS
Geospatial data are better maintained in a standard format.
Revision and updating are easier.
Geospatial data and information are easier to search, analysis and represent.
More value added product.
Geospatial data can be shared and exchanged freely.
Productivity of the staff improved and more efficient.
Time and money are saved.
Better decision can be made.