The Lamproie DSBV 62 linear towed array is used for passive detection, classification and position fixing of underwater targets. Panoramic broadband and narrow-band analysis of the detected signals is performed continuously and displayed on two high resolution colour TV screens. The array is designed to be towed by either a submarine or surface ship. When used by a surface ship the array can be towed either behind a long, heavy cable (critical angle tow), or behind a composite system. In the latter case the array is towed by a long, neutrally buoyant cable connected to a depressor, which itself is then connected to the towing vessel through a short heavy cable.
For submarine use the array is 'clipped-on'. Lamproie is able to track several targets concurrently, either in broad- or narrow-band, with a very fine bearing accuracy. Tracking can be automatic or manual. An automatic rejection system for narrow-band countermeasures protects trackers from sonar jamming. Narrow-band analysis can be performed concurrently on several beams, steered either under automatic tracking or manually.
LOFAR analysis includes refined vernier scale capabilities. DEMON analysis demodulates signals for cavitation detection. A high fidelity audio channel improves target identification.
For upgrade and ship-life-extension-programs (SLEP), a wet-end overhaul solution is available. To benefit from the insights of modern sonar processing and to solve obsolescence problems, a form-fit-fitting modern front-end conditioning unit and a processing capability is available. Life extension is an effective solution from operational and cost perspective as recognized by a number of navies.