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Active remote sensing uses its own electromagnetic radiation and use microwaves. It maps areas hard to map.

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Why would amapmarker use active remote sensing instead of passive remote sensing?

A mapmaker might use active remote sensing over passive remote sensing because active remote sensing provides its own source of energy to illuminate the target, allowing for more control over the data collected. This can result in better resolution and accuracy in mapping features of interest.


How is active remote sensing different from passive remote sensing?

Passive remote sensing picks up wave lengths of the light spectrum occurring on their own such light in photography. Active remote sensing will send out a wavelength of the spectrum and measure how it bounces back like radar.


Active and passive remote sensing?

Active remote sensing uses its own energy source to illuminate the target and measure the reflected signals, such as radar. Passive remote sensing relies on external energy sources, like the sun, and measures the natural radiation emitted or reflected by the target, such as with optical sensors.


What is the difference between active and passive remote sensing systems in geography?

Active remote sensing transmits energy to allow an image to be formed. Passive remote sensing collects energy reflected or emitted from a surface. Active systems direct a bean of energy at a surface and analyze the energy reflected back. An example of active sensing would be a radar. Passive systems are pretty much what the eyes see, and it's like a photograph. Passive sensing radiates visible light.


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What are three types of remote sensing?

Three types of remote sensing are passive remote sensing (detects natural radiation emitted or reflected by objects), active remote sensing (sends out its own radiation to illuminate objects), and aerial photography (capturing images of the Earth's surface from aircraft or satellites).


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