Rotating waveguide antenna (rotating marine radar)

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SUMMARY

The discussion centers on the functionality and design of rotating waveguide antennas, specifically in marine radar applications. Participants clarify that these antennas, often referred to as slotted waveguide arrays, utilize a rotating mechanism to emit and receive electromagnetic waves. The beam pattern is characterized by a wide vertical coverage and a narrow horizontal aperture, essential for tracking both airborne and maritime targets. Key brands like Furuno are mentioned as manufacturers of these antennas, which are designed to withstand harsh marine environments.

PREREQUISITES
  • Understanding of radar technology and electromagnetic wave propagation
  • Familiarity with antenna types, specifically slotted waveguide and parabolic antennas
  • Knowledge of radar signal processing and return signal analysis
  • Basic principles of mechanical rotation in antenna systems
NEXT STEPS
  • Research the operational principles of slotted waveguide antennas in radar systems
  • Study the differences between slotted waveguide arrays and parabolic antennas
  • Explore the mechanics of rotating joints in radar antennas
  • Investigate the RADAR range equation and its implications for signal strength and distance measurement
USEFUL FOR

Marine engineers, radar system designers, and anyone involved in maritime navigation and surveillance technology will benefit from this discussion.

  • #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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