SFJackBauer Posted July 23, 2016 Posted July 23, 2016 Could it be done? I hope you mean the periscope... Radar is heavily absorbed by water.
aaron886 Posted July 23, 2016 Posted July 23, 2016 No. An ELF wave is not going to reflect off of a tiny submarine. Right? :unsure:
Kartoffel Posted July 23, 2016 Posted July 23, 2016 Well, it was used to communicate with them but I am not so sure if it could detect them well. War is easy and is just like riding a bike. Except the bike is on fire and the ground is on fire and you are on fire and you realise you are in hell :joystick:
OutOnTheOP Posted July 24, 2016 Posted July 24, 2016 (edited) Well, it was used to communicate with them but I am not so sure if it could detect them well. Yes, but if I recall correctly, it requires a ridiculously long towed antenna array to do so (and I'm pretty sure the sub must set course to stream the array aligned to the transmitter), as the wavelength is so long the antenna cannot pick it up if it is not huge. Hence the earlier comment about detecting "tiny submarines". It's not that the submarine is physically tiny, it's that it's tiny compared to the wavelength, and anything smaller than the wavelength doesn't reflect the energy. Mostly, comms with subs are conducted through floating towed wire antennas operating on more conventional wavelengths. Edited July 24, 2016 by OutOnTheOP
aaron886 Posted July 24, 2016 Posted July 24, 2016 it's that it's tiny compared to the wavelength, That! That is what I meant. :music_whistling:
Emu Posted July 25, 2016 Author Posted July 25, 2016 If the wavelength is long compared to the RCS, doesn't it loop round them, like VHF and stealth fighters?
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