Knudsen Engineering Limited | 307 followers on LinkedIn. Sophisticated SingleBeam Sonar Solutions | KNUDSEN, a small technology-driven firm located in Perth, Ontario, Canada, designs and manufactures sophisticated sonar instrumentation for wide range of marine and defense applications including hydrographic survey, dredging, sub-bottom profiling, deep oceanographic research, and more recently, naval fleet navigation. A familiar face to the industry for 3 decades, the Company is recognized for its pioneering use of digital signal processing (DSP), rugged innovative high performance products and dedicated customer support. Current product lines span a commercial line of single beam echosounders with hundreds of installations across the world and include the Sounder Series of standard bathymetric survey systems for hydrography and dredging, the Chirp Series for scientific and deep water survey/sub-bottom profiling, and the Pinger Series for shallow water sub-bottom profiling.