Jan
07-20-1999, 10:38 AM
Hi,
If fishfinder transducers are used for a sidescan it will be usefull to find a way to make their beam as narrow as possible.
Perhaps the next idea might work.
The other day I was driving at night and notice that where the light beams overlapped eachother there was, obviously, a stripe of light twice as bright as the individual beams.
This stripe of light was much narrower that the individual beams (Not a big supprise...)
It made me wonder if this could be used for the transducer.
Let 2 fishfinder transducers emit their baloon shaped soundcone overlapping eachother a bit.
Would the sound reflected from the 'double lit' part of the beam be louder then the sound reflected from the 'single lit' part ?
If so, we could filter the 'double lit' echo's and have practicaly a much narrower beam then we started off with.
Also the sound returned would be stronger.
Do you think this will work ?
Regards,
Jan
If fishfinder transducers are used for a sidescan it will be usefull to find a way to make their beam as narrow as possible.
Perhaps the next idea might work.
The other day I was driving at night and notice that where the light beams overlapped eachother there was, obviously, a stripe of light twice as bright as the individual beams.
This stripe of light was much narrower that the individual beams (Not a big supprise...)
It made me wonder if this could be used for the transducer.
Let 2 fishfinder transducers emit their baloon shaped soundcone overlapping eachother a bit.
Would the sound reflected from the 'double lit' part of the beam be louder then the sound reflected from the 'single lit' part ?
If so, we could filter the 'double lit' echo's and have practicaly a much narrower beam then we started off with.
Also the sound returned would be stronger.
Do you think this will work ?
Regards,
Jan