Garmin 010-01964-10 GT41-TH Chirp/Side/DownVu Xdcr Fish Finders

sonar is an important technology for marine vessels we'll be introducing garmin chirp sonar and other sonar technologies to explain how they can give you a clear picture of the seabed and fish schools first what is sonar sonar devices survey underwater terrain and targets by transmitting ultrasonic pulses which reflect off the seabed and objects in the water a fish finder emits ultrasonic pulses from a transducer when this pulse bounces off objects in the water such as fish plants or the seabed the echo is received by the transducer this signal's depth and intensity can be displayed as a sonar image on the screen of the fish finder how do traditional sonar and chirp sonar systems differ traditional sonar transmits at a set frequency and produces an image of limited resolution when it strikes an underwater object fish finders that use traditional sonar produce an image that is relatively