Active remote sensing and Passive remote sensing are the two most common types of remote sensing. Active remote sensing emits energy itself onto objects and areas and a sensor picks up and measures the reflected radiation. . Radar is an example of active remote sensing where the time between discharge and return is measured, securing the location, direction, and speed of the object. Passive sensors distinguish natural radiation that's reflected by the item or its surroundings. Reflection from the sun is the most common form of passive remote sensing. One example of this type of passive sensing is photography.
"Digital aerial photography showing devastation in Ocean Springs, Mississippi. This imagery was acquired by NOAA on August 30, 2005, one day after Hurricane Katrina slammed the region."
Radar shown here provides the monitoring of ice sheets which can be used to assess the threat of rising sea levels.
This shows the interaction between satellite and radiation in order to form images.
Activity 1
This is the 1-channel Thematic display type map showing MODIS NDVI that I made after learning the basic applications of multispec.
Activity 2
Shown below are 3 finalized map images showing Linear, Equal area, and Gaussian stretches, in ordewr from left to right. We also learned how to use min/max and that is represented by showing enire range, 2% clipped, and 4% clipped, alos from left to right.
Activity 2
Shown below are 3 finalized map images showing Linear, Equal area, and Gaussian stretches, in ordewr from left to right. We also learned how to use min/max and that is represented by showing enire range, 2% clipped, and 4% clipped, alos from left to right.
This map portrays unsupervised classification with each cluster showing a different area of soil/vegetation
Activity 4
This map shows supervised classification of an image file by selecting training areas for selected classes from known areas.
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