Low frequency active sonar
We have over 30 years of practical experience with low frequency active sonar (LFAS). This radar system provides protection against submarines (Anti-Submarine Warfare). Find out what we do for the Dutch Ministry of Defence using LFAS.
Initial research on experimental ALF system
We believe sonar research can only be successful through intensive experimentation at sea. For that reason, we conduct annual LFAS experiments at sea, working closely with the Dutch Defence Materiel Organisation.
We began research into the experimental ALF system in 1990. This was in collaboration with Thales Underwater Systems for the Dutch Ministry of Defence.
Testing with new type of LFAS system
We’re currently testing new concepts and algorithms at sea using the successor to the ALF system. This semi-operational Interim Removable LFAS system consists of the Socrates Sonar Source, which we developed. This system is also used by the Royal Netherlands Navy on board operational platforms to gain operational experience.
This new type of sonar brings new scientific challenges, which we’re keen to tackle through research. Our research topics are waveform design, array processing, false alarm reduction, wide-band sonar signal processing, and sonar performance prediction.
This research programme has led the Royal Netherlands Navy to purchase an operational LFAS (Multistatic Active Passive System) from Ultra Electronics Maritime Systems, with signal processing supplied by TNO.
Leaflet on Anechoic Basin
Find out how to take underwater measurements in our anechoic basin
Ton van KoerselFunctie:Senior Business Developer UWW
“Our navy deserves the best possible submarine”. He may not quite collect model submarines in his spare time, but otherwise the life of senior business developer Ton van Koersel is almost entirely dominated by undersea warfare.
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Acoustics and sonar
The TNO Acoustics and sonar group strives to support governments and industry in the Netherlands and abroad to better understand, use and control sound.
With its significant knowledge base, the Electronic defence team provides an operational advantage to our customers.
Environmental effects of sonar
Marine mammal research is a key spin-off of the work of the Acoustics and Sonar department. This department wants to maintain and extend the national technology base in the field of sonar systems, the submarine environment and – defence against – submarine weapons.
Ocean resilience and transparency
Various civil parties use our expertise in the field of the ocean environment, including shipping, the offshore industry, ports and construction companies.
Military use of space
TNO has made four recommendations to make us less vulnerable to satellite failure or misuse on a civilian and military level.