How to spot the ship's motion compensation?
So we were watching the BBC Three Men in a boat when a boat was equipped with a fish finder sonar. And the question arises of how the screen shows a still image when the boat is pitching and rolling around? He a quick look around the Garmin website after a search engine does not throw up an obvious answer, but all in vain.
The beam is fairly normal wide, like a spotlight. The narrow focused beam is much more sensitive to this issue, but able to penetrate much deeper and sends it back reflections much more strong. The transducer is very sensitive, and will accept the return signal from surprising angles. A sound level of the industry such as Furuno shows reflections and bounce as phantom lines below the main image (zoom out and see), and this is useful to show the bottom hardness and inversion layers, etc. as a fisherman I was totally disinterested professional in terms of average – I want all the details now, every second or faster. Top End push for Furuno and Simrad its maximum, and still want more. Unless in very shallow water of the rise and fall of the boat is not too obvious. Walk up and down in the swell of a few feet at a time is clearly shown as the background, a sinusoidal waveform normal '. Radical sway due to the speed of movement tends to appear as interruptions signal, with a sort of scalloped appearance – but has much to do with the setup – I have my scroll speed set too fast, but is a tool I used a lot and want instant information. Slow play is a lot of stuff you do not see. The transducer is usually mounted in a place physically on the ship moves much less than the head no. A lot of effort is put into putting this in the most stable in the commercial center. Many recreational settings are well on the edge of the edge bottom of the transom, and you will not improve much on this if you can get closer to the keel with out interfering with the flow of water or the propeller. All units no matter how cheap, have a large assembly guide, if you still get the most out of your machine. You probably will not find information specific on this point, since manufacturers are not interested in entering a fight over how their systems work in difficult conditions with occasional users – When you can not predict how the transducer is mounted and so on. In the commercial market for installation technicians and sales staff are very well trained in how their systems work and must be mounted – I think this issue is a big part of the sales pitch, and features highly in negotiating a deal! Edit People like me can tell if the bottom is sand, shell, stone, clay, a mixture of some of them – even we in our local waters to identify the type and density of weeds – I can even say the color of the brush. When the signal is so fast in my set up I see the change in the time immediately reading the rocks boat, so it is real and very easy to make – basically living in Action.
Garmin Fishfinder 140, Garmin Fishfinder, Garmin Fishfinder 400c
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