Rotating waveguide antenna (rotating marine radar)

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Rotating waveguide antennas, commonly seen on ships and shores, utilize a motor to physically rotate their beam, distinguishing them from phased array systems. These antennas often feature slotted waveguide designs, which allow for a wide vertical beam and a narrow horizontal beam, making them suitable for maritime applications. They function as both transmitters and receivers, with the slots enabling the antenna to radiate and receive electromagnetic waves effectively. The received signal strength is influenced by the distance from the target, following the radar range equation, which accounts for signal power loss over distance. Understanding the specific mechanics of these antennas, including their construction and operation, is essential for effective use in marine radar systems.
  • #31
artis said:
if a target would be say few meters from the antenna then indeed it would affect the antenna noticeably.
So it would work if you were right next to the target - so you would know where it was, anyway. Oh come on!
artis said:
But still if I can rephrase, let me ask like this,
Are there any instances where a radar's transmitted waves (yes I know they are high power , at least when they leave the antenna, near the antenna) can interfere with the reflected echo in such a way that is detrimental to the echo signal and lessens the chance of it being picked up?
Do you really not want to learn about Radar in the proper way. Your knowledge is so sketchy that you are coming to all sorts of daft conclusions rather than admit it. Multipath propagation from a moving target can produce varying interference patterns for a receiver but that really is nothing to do with Radar techniques. @Tom.G is being very kind and polite to you but even he has told you to get some reading done.
Would you be acting the same about Quantum Theory and Black Holes?
 
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  • #32
sophiecentaur said:
Do you really not want to learn about Radar in the proper way.

I think we have an answer.

sophiecentaur said:
Would you be acting the same about Quantum Theory and Black Holes?

One can look at past threads.

Tom.G said:
Now please,
GET A BOOK ON RADAR AND LEARN THE RUDIMENTS,
or
https://www.google.com/search?&q=radar+fundamentals+pdf.
or
at least use wikipedia.

Some of those are really excellent. I do worry a bit that they may not be starting in the right place. This is tagged at B-level, but the OP is making a bunch of I-level speculations. It's also moved from "how does this kind of radar antenna work" to "how does radar work".
 
  • #33
We are attracted to this sort of thread like moths to a flame.
 
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  • #34
sophiecentaur said:
We are attracted to this sort of thread like moths to a flame.
About to crash & burn here.
 
Last edited:
  • #35
And on that note, it's time to lock the thread.
 
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