UHF to Ku

Bidirectional
ETHERNET DATA LINKS

Today we all expect real-time data and video streamed on-demand to everything from our hand-held devices to our desktop. Bidirectional data link radios operate as an Ethernet gateway between the air and ground systems. Data, including “video over IP” can be routed between the aircraft and ground system the same as any node on a network. It stands to reason that aircraft operations would greatly benefit from a transparent data link where the operators (and sensors) on the aircraft can remain connected to their command center with a fully bidirectional data link. It would be as if a network cable was routed to the aircraft. Both forward error correction and “hand-shaking” can be employed for data reliability. Data can also be encrypted prior to transmission to prevent eavesdropping.

Troll Systems

Troll Systems is a market leader in providing long-range, Ethernet/IP based data links and intelligent tracking antennas for ISR systems.  Troll data links provide robust, high-speed connections between airborne and ground assets and support a variety of secure radio waveforms and network topologies for defense applications.  Troll’s automated, high performance tracking antenna systems have been proven to increase range and improve throughput from airborne and mobile terrestrial platforms including rotary, fixed wing, and maritime systems.

unidirectional and bidirectional video data links
Bidirectional Communication 2

Troll designs directional tracking antennas, transmission and control systems from UHF to 17GHz

UHF to Ku

Unidirectional
DOWN LINK VIDEO AND DATA SYSTEMS

Modern unidirectional video links rely on DVB-T digital transmission to send a single digital video stream from an aircraft to a ground station. Each transmission channel requires 8MHz bandwidth. Typical transmitters first “encode” the video signal using an MPEG2 or MPEG4 video encoder. “One-way” audio and data can also be added. To minimize errors in the transmission, forward error correction is used to send extra coded data to the ground receiver to improve recovery of any partially corrupted transmissions. In addition many of Troll’s customers encrypt their data prior to transmission to prevent unwanted reception by unauthorized users.

Troll Systems

Troll Systems is a market leader in providing long-range, Ethernet/IP based data links and intelligent tracking antennas for ISR, airborne law enforcement and commercial broadcast ENG systems.  Troll data links provide robust, high-speed connections between airborne and ground assets and support a variety of secure radio waveforms and network topologies for defense and civilian applications.  Troll’s automated, high performance tracking antenna systems have been proven to increase range and improve throughput from airborne and mobile terrestrial platforms that include rotary, fixed wing, and maritime systems.

unidirectional and bidirectional video data links
Bidirectional Communication 2

Troll designs directional tracking antennas and control software from UHF to 18GHz