Timeline for Wireless communication under water
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 4, 2019 at 18:40 | comment | added | Andy aka | electronics.stackexchange.com/questions/210799/… | |
| Sep 10, 2016 at 2:32 | comment | added | user6030 | Underwater exploration for oil uses methods that produce STRONG pulses of sound and then watches for reflections of those sounds from rock boundaries below the ocean floor. Those pulses can be strong enough to permanently deafen any nearby whales, which can then leave them unable to find food. | |
| Jul 22, 2015 at 10:52 | answer | added | Keith Martineau | timeline score: 2 | |
| Jul 17, 2015 at 15:49 | answer | added | rolinger | timeline score: 2 | |
| Jul 15, 2015 at 19:48 | comment | added | Anthony | @Majenko That's exactly what I was going to say. Polluting the water with acoustic communication is pretty inconsiderate of the animals that live in the area. | |
| Jul 14, 2015 at 3:48 | comment | added | PsychedGuy | Absorption loss, Multipath fading, propagation delay, shipping noise, wind speed, acidity, temperature, depth,salinity and bandwidth can affect the signal strength. And issues such as absorption and fading are highly prominent in shallow waters. | |
| Jul 12, 2015 at 0:06 | comment | added | KalleMP | If you are able you may find that having a tethered floating radio node at both ends may be easier. It does depend on how durable your link needs to be. If you are in an 'safe' area with bottom access you may find that a fibre cable lying on the bottom may also serve as it can support a few gigabits/s and not suffer waves or weather. | |
| Jul 5, 2015 at 22:21 | history | tweeted | twitter.com/#!/StackElectronix/status/617820571590598656 | ||
| Jul 5, 2015 at 21:16 | comment | added | Majenko | Spare a thought for the whales... | |
| Jul 5, 2015 at 20:42 | comment | added | Electronic Curious | Leon_EvoLogic has a a product S2C R 42/24, this modem is rated for communication up to 6000 meters but the problem is about positioning the modems. The antenna on the modems are not omni directional so its hard to position the model on the transmitter and the receiver side. | |
| S Jul 5, 2015 at 20:31 | comment | added | Barry | Potential pitfalls are reverberation, multi-paths, effects of rain and waves, effects of biologics, etc. Do you need omnidirectional capability or can you use a restricted beamwidth? Are there potential interfering noise sources present such as shipping. You can see that there are a lot of considerations to providing an underwater acoustic data link. If you provide more details on your application, the community can provide more answers. Of course, talking to your modem supplier is also a good idea. | |
| S Jul 5, 2015 at 20:31 | comment | added | Barry | You didn't provide enough information to be able to properly answer your questions. This includes the data rate which determines the needed bandwidth, the allowable error rate, the power available, the depth requirements, how close are the bottom and any other potential reflectors, how large a transducer can you accommodate, how much DC power is available, size and weight restrictions, etc. | |
| Jul 5, 2015 at 19:20 | comment | added | Leon Heller | What does EvoLogics have to say? | |
| Jul 5, 2015 at 18:34 | history | asked | Electronic Curious | CC BY-SA 3.0 |