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What is passive remote sensing and active remote sensing? |
| Passive Remote Sensing Remote sensing based on the energy from the sun is called passive remote sensing. This is made possible only through the help of a sensor fitted on a distant surface. Active Remote Sensing Remote sensing based on an artificial source of light or energy source is called active remote sensing. A fire example for this is the taking of pictures using a camera flash. Here camera is the sensor and the flash coming from the camera is the artificial energy source. |
