Digital imagery can be transmitted from a remote sensing platform to a ground station using the...

• A. Fiber optic
• B. Satellite transponder
• C. Bluetooth
• D. RF datalink

Answer: (D)

Transmitting digital imagery from an airborne platform to a ground station relies on a wireless link designed for air-to-ground data transfer. A radio frequency datalink provides the necessary high-bandwidth, real-time (or near-real-time) communication over the line-of-sight distance between the aircraft and the ground station, with robustness and security features suited for payload data.

Fiber optic would require a physical connection, which isn’t practical for a moving platform. A satellite transponder would route data through space, adding latency, cost, and dependence on satellite availability, not the typical direct downlink. Bluetooth is intended for short-range, low-bandwidth connections and cannot handle imagery data over typical flight distances.