Namin Tech "Dual-Frequency Simultaneous Display" Ushers in the "Dual-Screen" Era of Underwater Detection
Namin Tech has pioneered the industry-first "Dual-Frequency Simultaneous Display" patented technology, leveraging its core R&D strengths to solve the fundamental challenge of underwater detection — balancing close-range detail with long-range obstacle avoidance. Redefining the new heights of underwater detection.
Dual-Frequency Simultaneous Display
Ushering in the "Dual-Screen" Era of Underwater Detection
The "Dual-Frequency Simultaneous Display" technology is akin to equipping underwater detection devices with a "wide-angle + telephoto" dual-lens system — clearly presenting fine underwater targets and obstacle contours up close on one screen, while simultaneously scanning the wide-area underwater situation at long range on the other. Operators gain comprehensive awareness of both near and far information, with global context and fine detail in sync.
Near and Far in Sync, No Switching Required
Low frequency handles long-range, wide-area scanning (wide-angle), while high frequency handles close-range, high-definition detail (telephoto). Both frames are displayed simultaneously in real time on the same screen, eliminating the need for manual frequency switching and boosting situational awareness efficiency by over 50%.
Global View + Detail, See Everything at Once
Low-frequency far-field imaging provides the overall underwater environment and approximate target locations; high-frequency near-field imaging reveals target contours, materials, and fine features — full coverage without blind spots, clarity without blur, making it especially suited for turbid waters and complex terrain.
Strong Adaptability to Complex Environments
Dual-frequency complementarity ensures stable imaging even in turbid, low-light, and low-visibility conditions where optical devices fail. It is adaptable across multiple platforms — ship-mounted, USV, ROV — meeting diverse requirements in firefighting, maritime operations, flood control, dam inspection, and more.
Reduced Misjudgment, Enhanced Operation Quality
Side-by-side comparison of high- and low-frequency images on the same screen reduces information blind spots and misjudgments inherent in single-frequency operation. This makes underwater structural inspection, pipeline investigation, and target identification more reliable. When paired with AI recognition, targets can be automatically annotated with position and size.
Low Frequency: Wide-Angle for Distance
High Frequency: Telephoto for Clarity
The core of Namin Tech's "Dual-Frequency Simultaneous Display" technology lies in the sonar's ability to emit sound waves at different frequencies in a time-division manner, enabling dual-frequency collaborative operation. High-frequency sound waves, with their short wavelength and high resolution, focus on close-range detection, clearly capturing fine contours and textural features of underwater targets to support precision inspection and target identification. Low-frequency sound waves, with long propagation range and low attenuation characteristics, concentrate on long-range area scanning, effectively detecting distant obstacles, underwater terrain variations, and other environmental information, issuing timely collision-avoidance warnings to prevent underwater equipment damage from blind-spot collisions, significantly enhancing operational safety.
Advantageous Roles in Application Scenarios
Underwater Emergency Search & Rescue
· No frequency switching needed — quickly locate persons overboard and shipwreck debris, with over 50% improvement in situational awareness efficiency, significantly boosting search and rescue success rates.
Municipal Pipeline Networks
· Dual-frequency synchronization: high frequency identifies pipe wall corrosion, deformation, sedimentation, and concealed connections; low frequency determines pipeline routing and subsidence zones.
Marine Engineering & Scientific Research
· Low frequency tracks pipeline routes over long distances; high frequency identifies anti-corrosion coating damage, suspension, exposure, and third-party damage.
Aquaculture & Fisheries
· Wide-area survey of water terrain and fish school distribution; high-definition inspection of net cage damage and underwater debris, supporting stable and increased aquaculture yield.
Port & Maritime Operations
· Waterway dredging and obstacle survey: low frequency wide scan for full coverage, high frequency for identifying small targets such as reefs, shipwrecks, and fishing nets, ensuring navigational safety.
· Pier pile foundation / fender inspection: high frequency clearly reveals rebar corrosion, concrete spalling, and deformation; low frequency captures overall structural condition.
Namin Tech's Dual-Frequency Simultaneous Display breaks through the traditional sonar bottleneck where "range and clarity" cannot be achieved simultaneously. With synchronized dual-frequency imaging and comprehensive global-plus-detail awareness, it has become a key technology in underwater detection, significantly enhancing operational efficiency and decision-making reliability across multiple industries, empowering underwater detection operations to be more efficient, precise, and safe!