An echo sounder is also known as sonar and sonar. Originally created to locate submarines, today it helps fishermen find places rich in prey, and allows them not to linger in vain in places where there are no fish.
Instructions
Step 1
The sonar work is based on the use of a sound wave. She is born in the transmitter of the echo sounder, after which she is sent towards the bottom of the reservoir. Having reached the bottom, the sound wave returns to the surface, where it is picked up by the echo sounder receiver.
Step 2
The receiver converts the reflected sound wave into an electrical signal, due to which an image appears on the echo sounder display. The longer the sent sound takes back, the deeper the object is under the water. The exact distance to the object helps to determine the property of the sound wave: the speed of its movement under water is always the same and is approximately 1400 m / s. Thus, the time spent by the sound wave on its way to the bottom of a reservoir or other object and back to the surface turns into the distance that it covered.
Step 3
Every second the echo sounder sends out new sound waves, doing this with a high intensity, which allows not only to receive data on stationary objects, but also on fish swimming in the zone accessible to the echo sounder. The viewing angle may differ depending on the type of echo sounder: some models have an angle of up to 90 degrees, while others only 10-20.
Step 4
The frequency of the sound wave can also vary, but most echo sounders have it around 200 kHz. The fish does not react in any way to the sound emitted by the echo sounder, because it does not hear this sound at all - just like a man. Thanks to this, you can easily search for fish spots in the reservoir without fear of scaring away all the local inhabitants.
Step 5
The clarity of the image on the display of the echo sounder, the presence of small details depends on the power of the transmitter of this device. The higher it is, the more likely it is to find the desired object in a clogged reservoir or at great depths. Another component of the echo sounder, the transducer, also plays an important role. It must convert even the weakest echo reflected from the bottom of deep reservoirs into an electrical impulse.
