Timeline for Optimal frequency for penetrating 1 meter of water using radio waves?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 19, 2023 at 2:10 | vote | accept | Hypnos Stratagem | ||
| Jul 17, 2023 at 23:25 | comment | added | Hypnos Stratagem | That is a very good point about the antenna length. Even with electric shortening, the antenna would still be very large if one wished to not use MW of power. We are not considering using a 1MHz wavelength and electrically shortening it down by about 1/100th such that the antenna length is about 1m. The resolution of the image does not really matter as we are just trying to detect the presence of aluminum at the bottom of a 1m deep pond ( the outcome is binary - either it is detected or it is not detected). What do you think about that? | |
| Jul 17, 2023 at 20:36 | comment | added | Tiger Guy | ELF is also used for submarine communication. Both VLF & ELF have the disadvantage that you can't get very much data from the carrier signal. | |
| Jul 16, 2023 at 17:46 | history | answered | niels nielsen | CC BY-SA 4.0 |