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#1
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Forward Looking Scanning Sonar Mounts
I am working with a company (www.blueviewtech.com) to commercialize a
low-cost high-definition imaging system. I am looking for feedback/suggestions from boaters who have experience with other FLS type sonar. In particular, I am interested in your experience with the different mounts (transom vs. thru-hull) for these system. This feedback will be very helpful in shaping the companies first recreational boating high-definition imaging sonar product. |
#2
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Forward Looking Scanning Sonar Mounts
In article ,
"Scott Bachelor" wrote: I am working with a company (www.blueviewtech.com) to commercialize a low-cost high-definition imaging system. I am looking for feedback/suggestions from boaters who have experience with other FLS type sonar. In particular, I am interested in your experience with the different mounts (transom vs. thru-hull) for these system. This feedback will be very helpful in shaping the companies first recreational boating high-definition imaging sonar product. Add, or market, a third option: Shooting through the hull. Most of the time, we want the sensor forward, but not put a hole in the hull. Most transducers work if properly sealed to the hull; you'll want to ensure yours does. A particular need is to see just in front of the boat and 4-8' down -- a close to horizontal pattern. The only use I can see is when I am trying to nose into a narrow channel. Anything deeper than the keel is safe. And it should transmit NMEA info for relay on other instruments. Other than that, be careful not to advertize the product here if/when it comes to market, as that's a no-no. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
#3
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Forward Looking Scanning Sonar Mounts
I don;t think a forward looking transducer lends itself to shooting
through the hull. Doug s/v Callista "Jere Lull" wrote in message ... In article , "Scott Bachelor" wrote: I am working with a company (www.blueviewtech.com) to commercialize a low-cost high-definition imaging system. I am looking for feedback/suggestions from boaters who have experience with other FLS type sonar. In particular, I am interested in your experience with the different mounts (transom vs. thru-hull) for these system. This feedback will be very helpful in shaping the companies first recreational boating high-definition imaging sonar product. Add, or market, a third option: Shooting through the hull. Most of the time, we want the sensor forward, but not put a hole in the hull. Most transducers work if properly sealed to the hull; you'll want to ensure yours does. A particular need is to see just in front of the boat and 4-8' down -- a close to horizontal pattern. The only use I can see is when I am trying to nose into a narrow channel. Anything deeper than the keel is safe. And it should transmit NMEA info for relay on other instruments. Other than that, be careful not to advertize the product here if/when it comes to market, as that's a no-no. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
#4
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Forward Looking Scanning Sonar Mounts
Jere,
The ability to trasmit and receive thru the hull would be a great feature, but to get the beams looking forward through the hull will be difficult. The hull material will severely degrade the acoustic signal and not allow us to produce the high resolution images. We are trying to minimize the size of the transducer to allow easier placement of the unit. Thanks, Scott "Jere Lull" wrote in message ... In article , "Scott Bachelor" wrote: I am working with a company (www.blueviewtech.com) to commercialize a low-cost high-definition imaging system. I am looking for feedback/suggestions from boaters who have experience with other FLS type sonar. In particular, I am interested in your experience with the different mounts (transom vs. thru-hull) for these system. This feedback will be very helpful in shaping the companies first recreational boating high-definition imaging sonar product. Add, or market, a third option: Shooting through the hull. Most of the time, we want the sensor forward, but not put a hole in the hull. Most transducers work if properly sealed to the hull; you'll want to ensure yours does. A particular need is to see just in front of the boat and 4-8' down -- a close to horizontal pattern. The only use I can see is when I am trying to nose into a narrow channel. Anything deeper than the keel is safe. And it should transmit NMEA info for relay on other instruments. Other than that, be careful not to advertize the product here if/when it comes to market, as that's a no-no. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
#5
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Forward Looking Scanning Sonar Mounts
In article ,
"Scott Bachelor" wrote: Jere, The ability to trasmit and receive thru the hull would be a great feature, but to get the beams looking forward through the hull will be difficult. The hull material will severely degrade the acoustic signal and not allow us to produce the high resolution images. We are trying to minimize the size of the transducer to allow easier placement of the unit. Thanks, Scott I hope your using a Frequency above 200Khz. Anything below that isn't going to give you the resolution that your seeking. Bruce in alaska -- add a 2 before @ |
#6
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Forward Looking Scanning Sonar Mounts
In article ,
"Doug Dotson" wrote: I don;t think a forward looking transducer lends itself to shooting through the hull. Doug s/v Callista Not only that but the hull tends to cause the beamwidth of the transducer to spread, radically, when Through-Hull installations are used, for receiving the return signals. Bruce in alaska -- add a 2 before @ |
#7
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Forward Looking Scanning Sonar Mounts
Scott Bachelor wrote:
Jere, The ability to trasmit and receive thru the hull would be a great feature, but to get the beams looking forward through the hull will be difficult. The hull material will severely degrade the acoustic signal and not allow us to produce the high resolution images. We are trying to minimize the size of the transducer to allow easier placement of the unit. Thanks, Scott "Jere Lull" wrote in message ... In article , "Scott Bachelor" wrote: I am working with a company (www.blueviewtech.com) to commercialize a low-cost high-definition imaging system. I am looking for feedback/suggestions from boaters who have experience with other FLS type sonar. In particular, I am interested in your experience with the different mounts (transom vs. thru-hull) for these system. This feedback will be very helpful in shaping the companies first recreational boating high-definition imaging sonar product. Add, or market, a third option: Shooting through the hull. Most of the time, we want the sensor forward, but not put a hole in the hull. Most transducers work if properly sealed to the hull; you'll want to ensure yours does. A particular need is to see just in front of the boat and 4-8' down -- a close to horizontal pattern. The only use I can see is when I am trying to nose into a narrow channel. Anything deeper than the keel is safe. And it should transmit NMEA info for relay on other instruments. Other than that, be careful not to advertize the product here if/when it comes to market, as that's a no-no. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ Any sonar expected to provide a visual representation or zoned alarms of the underwater ahead will use an array of at least 2 or 3 sonar receiver sensors, displaced in two dimensions wrt the expected field of view. The image will be constructed from a computer time analysis of bipolarised paired pulse signals, using gated time differences to effectively scan locations for returns. You don't need great resolution to spot rocks big enough to hole your boat at say, 50 feet. In suspect waters, you should be going slow. Charts would be cheaper. Lost containers and high seas speed would complicate matters, requiring violent autopilot turns without warning to provide any benefit to speeders. We ain't likely to see this technology until all of our so called "enemies" figure out how to do this on their own, and start mass producing it for consumers. The Chinese will be the ones to make money on this, considering modern American industrial practices which now seemingly extend even to military-industrial concerns. Or is a military-industrial mindset a common plague? What enemies? No-one will win any war involving boomers,except those who sell them. If you were to write a program to do this (and that would be the hardest part) the CIA would put you in jail. All in the name of paranoia, eh? Terry K |
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