SONARS1 1

The true motion display showedships track, the fish target andmotion in colors. The first Multibeam sonar, the SM600, gave better range,greater target definition and was easier to understand. All at a much lower cost. At the beginning of the eighties Simrad introduceddigital signal processing a system which is still uniqueto Simrad today. It offers faster and more accurate processing in addition to simplifying the electronicsand also makes it possible to upgrade without extrahardware. In the early eighties Simrad introducedthe SX202, which was the first 90
o vertical tilt sonar on the market. The development of advanced transducer technologydemands considerable patience, accuracy and hours of testing.