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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
Difference between sensor and scanner?
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Rahul kumar Best Answer
Scanner is a device for examining, reading, or monitoring something, in particular. More simply, scanner is a device that scans and converts the information into digital data. Two simple type of scanners used in remote sensing are whiskbroom and pushbroom scanner. Sensors collect data recorded by sensor by detecting the energy that is reflected from Earth. These sensors can be on satellites or mounted on aircraft. Remote sensors can be either passive or active. Active sensors have its own source of light or illumination and actively sends a pulse and measures the backscatter reflected back to the sensor. Whereas passive sensors measure reflected sunlight emitted from the sun. When the sun shines, passive sensors measure this energy.
can u exaplain sensor defination again?
Sensor is a device that gathers EMR energy, converts into signal and present it in a form (image) suitable for obtaining information about the object under investigation.