Select the example of Active sensor in Remote sensing, from the following sensors.

Concepts:

Remote sensing is the art and science of obtaining information about an object without physical contact with that object.

The passive sensor responds to physical stimuli. Light, heat, vibrations are detected from passive sensors as they occur in the environment. Examples are Electro-optical sensors, the Television cameras. Return Beam Vidicon.

Active sensors work along with transducers that create the stimuli to be detected and measured that interaction of those stimuli with the environment. Examples are Sonar or LIDAR systems, Laser scanners, etc.