As maritime threats evolve with advances in underwater warfare and new technologies, navies around the world face growing challenges in safeguarding their seas. Defense companies must continuously innovate to stay ahead—and ASELSAN, Türkiye’s leading defense technology company, is rising to this challenge with pioneering solutions that strengthen the effectiveness and resilience of today’s naval forces. A prime example of this innovation is DÜFAS Low Frequency Towed Active/Passive Sonar System, developed to provide next-generation underwater detection and defense capabilities.
Driven by a vision to meet the diverse needs of both domestic and international customers, ASELSAN has developed deep expertise in maritime defense. Leveraging decades of experience, ASELSAN’s advanced naval solutions are gaining global recognition for their innovation, reliability, and effectiveness.
A testament to this commitment is DÜFAS 100/LR, an advanced detection system that identifies submarines and torpedoes at long ranges using both active and passive sonar modes. Built on bi-static and multi-static sonar architecture, it provides 360° omni-directional transmission for full coverage of the naval environment. This robust detection capability ensures effective operation even under challenging conditions, such as high-speed maneuvers and rough seas, enabling continuous, reliable surveillance.
DÜFAS system stands out with its torpedo countermeasure capability, offering recommended evasive tactics including ship maneuvers and the deployment of acoustic and expendable decoys. Seamlessly integrating with combat management systems, DÜFAS enables coordinated, real-time responses to underwater threats.
Key Capabilities of DÜFAS:
• Long-range automatic target detection and localization in active mode
• Long-range automatic torpedo detection, tracking, and classification in passive mode
• Torpedo countermeasure capability (optional)
• Bi-static and multi-static sonar architecture
• 360° omni-directional transmission
• Triplet towed array for resolving port/starboard ambiguity
• State-of-the-art adaptive signal processing
• Selectable pulse type and pulse length
• Operation under thermal layers for maximum surveillance
• Built-in test functions for system readiness
• Simulation capability for sonar performance prediction
• Designed to operate and survive at high speeds and high sea states
• Adaptable to combat management systems
• Integrated on-board training module
• With these advanced features, DÜFAS provides navies with a powerful tool for underwater situational awareness, threat detection, and defense—enhancing both operational security and mission effectiveness in today’s complex maritime environment.
