Which component provides data by detecting energy in a remote sensing system?

• A. Platform
• B. Processor
• C. Sensor
• D. Ground Station

Answer: (C)

The key idea is how data is gathered in a remote sensing system: energy from the scene must be captured and transformed into usable information. The component that does this by detecting energy is the sensor. It sits on the drone or aircraft and receives electromagnetic energy—whether sunlight reflected off objects in visible or infrared light, or energy emitted/returned by objects in radar or LiDAR systems—and converts that energy into electrical signals that carry the data. Those signals can then be processed to create images or measurements.

The platform is just the vehicle carrying the equipment, not the detector. The processor handles converting raw sensor signals into usable information, and the ground station is where data is received, stored, or further processed after collection.