Radiation and the Atmosphere B - as the energy travels from its source to the target, it will come in contact with and interact with the atmosphere it passes through. This interaction may take place a second time as the energy travels from the target to the sensor. Interaction with the Target C - once the energy makes its way to the target through the atmosphere, it interacts with the target depending on the properties of both the target and the radiation. Recording of Energy by the Sensor D - after the energy has been scattered by, or emitted from the target, we require a sensor remote - not in contact with the target to collect and record the electromagnetic radiation.
Application G - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem. These seven elements comprise the remote sensing process from beginning to end. We will be covering all of these in sequential order throughout the five chapters of this tutorial, building upon the information learned as we go.
Enjoy the journey! Of our five senses sight, hearing, taste, smell, touch , three may be considered forms of "remote sensing", where the source of information is at some distance. The other two rely on direct contact with the source of information - which are they? Can "remote sensing" employ anything other than electromagnetic radiation?
The answer is While the term 'remote sensing' typically assumes the use of electromagnetic radiation, the more general definition of 'acquiring information at a distance', does not preclude other forms of energy.
The use of sound is an obvious alternative; thus you can claim that your telephone conversation is indeed 'remote sensing'. You will not receive a reply. For enquiries, contact us. What is Remote Sensing? For the purposes of this tutorial, we will use the following definition: "Remote sensing is the science and to some extent, art of acquiring information about the Earth's surface without actually being in contact with it.
This interactive module is intended as an overview at a senior high school or early university level and touches on physics, environmental sciences, mathematics, computer sciences and geography. For teachers and students we have additional details and suggestions for using the tutorial. This educational material within these tutorials is provided as is and may be copied in any form and used for non-commercial purposes provided that the content of the original material is not altered and it is clearly indicated that the Canada Centre for Mapping and Earth Observation or Canada Centre for remote Sensing , Natural Resources Canada is the originator of this material.
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