meerkatz
LE
Dedicated ASW assets?
The LCS will dash ahead of the TG at 50kts and then stream the TA and defeat the lurking denizens of the deep!
Yes, that's the sound of a hundred sundodgers laughing their heads off.
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CVF and Carrier Strike thread
- Thread starter Adjutant
- Start date
LE
Dedicated ASW assets?
The LCS will dash ahead of the TG at 50kts and then stream the TA and defeat the lurking denizens of the deep!
Yes, that's the sound of a hundred sundodgers laughing their heads off.
Simpering Civvie
War Hero
No wah, as my question was about detecting a following plane, not boat. That's why I said radar and not sonar.
Lindermyer
LE
Please tell me this is a wind up and our education system has not really dropped to this level
Simpering Civvie
War Hero
@Lindermyer, it was an open question on how it could be done. Radio waves can and do pass the air/water boundary (albeit refracted and distorted), while sound waves can't.
The question was basically one of if the sub can know if it's being followed by a plane, the use of "radar" was just for illustrative purposes.
Lastly, I may be ill informed but I'm not stupid! Also had an excellent and broad education.
The question was basically one of if the sub can know if it's being followed by a plane, the use of "radar" was just for illustrative purposes.
Lastly, I may be ill informed but I'm not stupid! Also had an excellent and broad education.
Lindermyer
LE
Consider the very low end compared to the upper end of the frequency spectrum
Consider Weather Radar
Consider Weather Radar
Simpering Civvie
War Hero
Isn't weather radar quite high frequency? And it's air-reflect off water droplets-receive in air.
What I was thinking of (and I'm not sure it even exists) would be water based broadcaster-> pass the water/air boundary-> strike aluminium object in air-> reflect back-> pass air/water boundary-> hit water based receiver.
I've been told already that if such a system exists, it's not for public consumption.
What I was thinking of (and I'm not sure it even exists) would be water based broadcaster-> pass the water/air boundary-> strike aluminium object in air-> reflect back-> pass air/water boundary-> hit water based receiver.
I've been told already that if such a system exists, it's not for public consumption.
meerkatz
LE
@Lindermyer, it was an open question on how it could be done. Radio waves can and do pass the air/water boundary (albeit refracted and distorted), while sound waves can't.
The question was basically one of if the sub can know if it's being followed by a plane, the use of "radar" was just for illustrative purposes.
Lastly, I may be ill informed but I'm not stupid! Also had an excellent and broad education.
Sound does cross the air water boundary
Lindermyer
LE
Radar doesn't work by reflection or by bouncing off things.
Lindermyer
LE
One assumes he has never dived in a public swimming pool
meerkatz
LE
Simpering Civvie
War Hero
Everything I know about it must have been wrong then....
meerkatz
LE
So use your sonar to listen for the sound of active sonobuoys or their splash?.
Use your sonar to listen for the sound of the MPAs engine?
Use your look stick to look for any sign of a patrolling MPA?
No, go active on a radar and tell any MPA within a few hundred miles exactly where you are.
Use your sonar to listen for the sound of the MPAs engine?
Use your look stick to look for any sign of a patrolling MPA?
No, go active on a radar and tell any MPA within a few hundred miles exactly where you are.
Lindermyer
LE
I think that's probably a useful premise to start from.
Simpering Civvie
War Hero
Thanks for the answer, as I said it was an open question. I also specifically excluded sonobuoys, as I understand that some MPAs have other ways of following.
Also heard that sticking your scopes up would flag you to a search radar.
Simpering Civvie
War Hero
So how does it work? I'm sure others would want to know too...
Yokel
LE
Also had an excellent and broad education.
Not on things such as radio propagation though.
Like a fart in the bath!
Yokel
LE
Isn't weather radar quite high frequency? And it's air-reflect off water droplets-receive in air.
What I was thinking of (and I'm not sure it even exists) would be water based broadcaster-> pass the water/air boundary-> strike aluminium object in air-> reflect back-> pass air/water boundary-> hit water based receiver.
I've been told already that if such a system exists, it's not for public consumption.
Which is a shame, as the inventor would be a good candidate for a Nobel prize. Have you ever struggled with anything such as receiving a TV picture on a rainy day? Think how much attenuation a signal from a normal sized naval radar would suffer from just a few metres of sea water?
There is a reason why radio communication with submarines is VLF and ELF - with implications for antenna size.
D
Deleted 3147
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Which is leagues above the C2 pilot......that really is rubber dog shit/Hong Kong territory; all the perils of CATS/traps with feck all bragging rights/glamour
D
Deleted 3147
Guest
Yes but radar, as has been said, it was too open, exposes the boat too much. There are better way, which are passive and allow for counter detection as varying ranges. Which one is used (or is best employed) will depend on how the aircraft are operating (passive or active).
D
Deleted 3147
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