Remote Sensing:
Remote sensing is the process by which the electromagnetic energy (reflected light) reflected from an object to a device, often a satellite, is collected. When light from the sun hits an object, it then reflects off that object back into space, and will eventually hit a sensor on a spaceborne platform way out in space. The sensor then records and measures the reflected energy. Remote sensing can be used to aid in a number of different fields including monitoring shorelines, measure ocean temperature, can track erosion rates and has many natural resource applications. An example of how remote sensing could be used in my field of interest is to measure the health of a forest. A healthy, full forest will reflect more electromagnetic energy. If a forest is suffering from deforestation or poor health, the area will reflect less electromagnetic energy which allows scientists to record/measure the health of forests.
To better help explain how remote sensing works, look at the picture above. It can be seen that the sun is emitting solar radiation which eventually comes into target with objects on Earth. Once contact is made, the solar radiation will be reflected off that target object, to a sensor on an aircraft above which can record and measure the reflected electromagnetic energy. This information is then used to study research from a wide variety of applications.
Exercises 1-4
The map below is the finalized map from exercise 1inwhich we had to familiarize ourselves with the basic applications of multispec. The map below is set to thematic display.
The next map shows the different displays in order of linear, equal area and Gaussian
The next map shows unsupervised classification with clusters where each cluster represents a different section of interest
Lastly the last map shows a classified map with associated images
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