Question: Why are RADAR and LiDAR called active remote sensing? A. Their sensors are actively moving on board of drones, airplanes, and satellites. B. The source

Why are RADAR and LiDAR called "active" remote sensing? A. Their sensors are actively moving on board of drones, airplanes, and satellites. B. The source of energy is part of the remote sensor system. C. Sensors have moving/rotating mirrors. D. They workout

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