Passive Long Range Sonar

Long range passive detection, classification and localization of silent targets, in deep and littoral waters.

  • Long range detection & localization
    Taking full advantage of the physical aperture of the array (length x height).
  • Excellent bearing resolution and bearing discrimination
    Owing to the wide aperture of the array and the use of the Adaptive Beamforming.
  • Low sensitivity to flow noise
    Sustained performance proven at sea up to high operational speeds (> 15 Knots).
  • Easy installation onboard, ideal for upgrades
    Only requires to weld rails on the hull. Use of bolted clamping bows to secure the panels.
  • Easy maintenance and low Life Cycle Cost
    Simple install/un-install procedures.
    High reliability enabling minimum maintenance.

 

PEDIGREE

Proven at sea with many NATO and non-NATO Navies, on new-built and upgrade programs (SSN, SSK, SSBN)

Brazil (4)
Chile (2)
French Navy (all submarine Classes, 6 systems at sea + 6 ordered)
India (6)
Malaysia (2)
Another Asian Navy operating in equatorial/tropical environment (4)
Another South-American Navy operating in Pacific Ocean conditions (2)

A large installed base to build on world-wide operational and training experience.

OPERATIONAL HIGHLIGHTS

TUS PFAS enables full use of the large available space on the flanks of the submarine to install acoustic arrays of maximum aperture (length x height). The use of Adaptive Beamforming provides a very efficient rejection of the own ship noise and flow noise, which increases detection and classification performances even at high operational speed. Excellent bearing resolution/discrimination also enable increased Target Motion Analysis performance.

A particular highlight of the TUS PFAS is its very reduced baffle which contributes to a large bearing coverage.

MAIN CHARACTERISTICS

System features:

  • For any type of mono-hull submarine
  • Modular design: number of array panels driven by the hull length
  • Stand-Alone or fully integrated in a Sonar Suite

 

Sub-system features:

  • Fully proven at sea PVDF (polyvinylidene diflouride) Acoustic sensor technology
  • Ultra Thin Panels: Depth < 70 mm
  • Extended bandwidth possible if required
  • Instant localisation due to long array and high bandwith
     

TECHNICAL FEATURES

Typical length up to 27 m, modularly by steps of 0.5 m
Typical Bandwidth up to 6400 Hz
Bearing Discrimination Better than 1° (sources with same SNR)
Bearing Accuracy Better than 0.5° (standard deviation)