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Custom fibre optic and RF systems

Custom fibre optic and RF systems

Fibre Optic and RF Systems

PPM Systems designs and manufactures RF over fibre systems.

Carrying RF signals over fibre has many advantages including:

  • Wide bandwidth
  • Path length to 30km
  • INFOSEC & Tempest compliant (no emissions/immunity issues)
  • EMC & EMP resilient
  • Light-weight and man portable.

Fibre optically linked remote antenna platforms, such as Rodent 4, remote several antennas (operating in different bands) over very long distances without any signal loss or degradation.

PPM Systems provides a rapid prototype, evaluation and short run production capability combined with a technical partnership with the customer – COTS, MOTS and fully custom solutions for military and defence customers.

 

Applications

Typical applications of RF over Fibre include VLF/HF through VHF/UHF to satellite band transmissions.  Radio-over-fibre range from PPM Systems is widely deployed in defence scenarios such as:

  • Surveillance & signal intelligence (SigInt)
  • Tactical radio links (VLF, HF, VHF, UHF, GSM, Tetra, P25)
  • IED detection & force protection
  • VSAT / satellite communications
  • Sonar & communication buoys
  • Secure network data centres (MSF/DCF, GPS, DVB-T, GSM, Tetra)
  • OEM military equipment.
Rodent 4 Antenna Platform - NEW!

PPM Systems Rodent 4The Rodent 4 antenna platform provides a convenient way to deploy signals intelligence (SIGINT) antennas over hundreds of metres, allowing personnel to remain at a safe distance from the targeted zone.

Wideband RF over fibre links are employed to transmit RF signals from the remote antenna platform back to receiving equipment. This receiving equipment can be mounted in a vehicle or can be dismounted. The Rodent 4 is typically deployed to the target zone using a remote controlled vehicle (RCV) but can also be hand-carried.

Rodent 4 replaces Rodent III (Rodent 3).

 

Rodent 4 Datasheet
Military Comms
  • RF system and Radio-over-Fibre design
  • Ruggedised equipment including optical cable and connectivity
  • Specialist antennas and probes
  • Electromagnetically shielded equipment
  • Urgent operational requirement (UOR) experience
  • Rapid prototyping and short run production.

 

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SIGINT RF over Fibre Links

ViaLiteHD 3U Rack Chassis in CARC Tan for DefenceViaLite RF over fibre Signals Intelligence (SIGINT) links for Government use. The links’ spurious-free superior dynamic range allows small signals to be intercepted alongside large signals, as well as the interception of the entire frequency spectrum.

 

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GPS/GNSS RF over Fibre Links

Network time servers require an accurate time signal, which is usually produced by GPS/GNSS.  Where a time server isn’t near a building roof or no copper is allowed into the building, RF over fibre is required for the GPS connection.

 

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ViaLite RF over Fibre Systems

ViaLite RF over fibre allows link distances of up to 100 km in a single hop. Rapid single fibre deployment systems and covert housings can be provided to meet the requirements of Special Forces for deploy and forget observation posts. A range of further RF over fibre links are available for varying applications.

Wave division multiplexing techniques, such as DWDM, allow up to 96 signals on a single optical fibre while maintaining signal quality and isolation.

 

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Tactical HQ Remote Antennas

In an application such as a Tactical HQ or Forward Operating Base (FOB), RF over fibre can be used to re-position communication antennas well outside the Tactical Area of Responsibility (TAOR).  This provides the following benefits:

  • Radio range improved from “hill top” located antenna
  • Removes “co-site” antenna interference
  • Electromagnetic stealth for HQ / FOB
  • Encrypted radio assets remain within the TAOR
  • Rapid field deployment
  • Urban and over-the-hill coverage from Aerostat or Helikite mounted antennas
  • Low signal loss, for operation from a few metres to 30km
  • Man-portable equipment available, small and lightweight.

 

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More Information?

Telephone +44 (0) 1793 784389 or email: sales@ppmsystems.com

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