BES Electronic Systems, Naval datalink

BES Electronic Systems

FDLU - TDMA Digital Data Link

via HF, VHF, UHF, INMARSAT

Navy and Coast Guard ships rely on their Command & Control systems in order to manage the force. A uniform tactical picture is created by transferring reliable data between participants via wireless data-link. The Fleet Data Link Unit (DLU), provides digital Datalink capabilities using standard voice radios

The need

Naval ships and Coast Guard C² data is generally provided in a digital format, while wireless communication is usually achieved through analog transmissions. The quality of reception is directly affected by the method of transmission, rate of data flow, environmental conditions and more. Unfortunately, the wireless medium is shared by many users, creating opportunities for loss of data as a result of simultaneous transmission.

Transferring similar data to many recipients (broadcast) is necessary in creating a successful data-link in the naval arena.

The complexities described above present an obstacle to the implementation of a successful data-link over the wireless medium.

DLU in 19" Rack

Rugged DLU

BES Systems' solution is a multiple Participant Naval TDMA data link.It updates ship's Command & Control via existing ship's radios, (HF, VHF, UHF, L Band, S Band) and INMARSAT. The DLU is built for large number of participant ships using broadcasting and peer to peer communication.

Data rate is up to 14,400 KB/sec. The DLU is a master-less system that enables a fleet of ships to share same C2 picture.

Connected to the local Command & Control Center, the Data Link Unit updates other participant ships with the local situation (Radar Sensors etc') in order to generate 'the Arena Picture.

Data Link Unit (DLU) modems (HF, VHF, UHF, L Band, S Band and SATCOM) are PC controlled and connected to ship radio transceivers.

Download datasheet

Line Type	HF	VHF	UHF	INMARSAT
Modem Networking	included Broadcast	included Broadcast	included Broadcast	External Point to Point
Transmission Nature	Slots	Slots	Slots	Break In
Error Correction	FEC	FEC	FEC	ARQ
Baud Rate	Up to 4000	Up to 19,200	Up to 19,200	9600

BES Systems Ltd. 6B Tfuzot Israel St. Givataim 53583 Israel, CAGE SK477

Tel: +972-3-5714998 Fax:+972-3-571-5085 email: asherlav@bes.co.il