Airborne Radio - Frequency Division Duplex COFDM Transceivers DVB-T and MIMO

Troll’s Network LinkBox II provides unsurpassed air-to-ground connectivity for surveillance aircraft, tactical ground and command operations. A multi-band data link, payload controller and network hub LinkBox II combines multiple TX/RX modems, video processing, DC power and data management. IP based it acts as a high-performance microwave data terminal and comms controller with supercomputer accelerated encoding, decoding and encryption.

Standard configurations include bidirectional COFDM transmitter and receiver pairs that operate in multiple bands from 1.2GHz to 7GHz. MIMO transceivers can also be added to establish simultaneous connectivity for tactical mesh networks.  Users can control multiple channels of video and data to provide redundancy, increase bandwidth, quality or range. Channels are between 2 to 16 MHz and support data rates to 40Mbps.

Supercomputer Accelerated:
Network LinkBox II incorporates a 64-bit supercomputer with high-speed Arm processors allowing layered techniques like: video stabilization, blended imagery or synthetic overlays. One of many processing improvements, adding a layer of stabilization to sensor data can increase encoding speed and efficiency.*

High Quality HD-SDI Video I/O to 4k:
LinkBox II features multiple high quality 4k, SDI inputs and outputs with HDMI monitoring standard. Internal H.265, H.264 encoders are capable of routing one or more of these high-quality transport streams to a ground station while simultaneously recording to a built-in DVR. This allows mission exploitation to occur in real-time or play back from the aircraft with time delay. Particularly useful if reception becomes limited and bandwidth constrained, the DVR time delay ensures that air-to-ground video quality is maintained regardless of data link conditions onboard the aircraft.

LinkBox II supports a variety of mapping protocols. Used in conjunction with software defined video processing; object detection, tracking, CoT and map annotation, LinkBox II provides image intelligence from the center of the operation to its edge.

^{*Image stabilization helps to lengthen the distance between keyframes to speed-up encoding and improve video quality, transmission and exploitation value.}