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  #11   Report Post  
Donal
 
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Default Ghost


"Joe" wrote in message
om...
"Donal" wrote in message

...
"Joe" wrote in message
om...
If you see a ghost on radar are you seeing boobsie?

If not what are you seeing, and how would you define a ghost?

Good for 1.5 asa points


Joe, I'm only answering because I know that it will really hurt you to

give
me some points!


A Ghost is the image that appears on your radar screen as a result of

the
signal that bounced off the real target, and then bounced off of your

boat
before being bounced off the real target again.


Where did you get that line of BS Donal? Is that a yachtmaster physic

explaination?

No it isn't. I got it from the manual that came from my Radar. However, I
have noticed that somebody else has said that the signal may have bounced
off a third party to produce the ghost. I agree with them.




I know that you weren't able to understand that explanation - so I'll

have
another go. A Ghost is a false image on your Radar screen.


Thats not correct either.

Anyone else wanna try to provide the correct answer before I set Donal

strait?

Go on Joe .... set me strait.

Regarghds


Donal
--




  #12   Report Post  
Joe
 
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Default Ghost

"Donal" wrote in message ...
"Joe" wrote in message
om...
"Donal" wrote in message

...
"Joe" wrote in message
om...
If you see a ghost on radar are you seeing boobsie?

If not what are you seeing, and how would you define a ghost?

Good for 1.5 asa points

Joe, I'm only answering because I know that it will really hurt you to

give
me some points!


A Ghost is the image that appears on your radar screen as a result of

the
signal that bounced off the real target, and then bounced off of your

boat
before being bounced off the real target again.


Where did you get that line of BS Donal? Is that a yachtmaster physic

explaination?

No it isn't. I got it from the manual that came from my Radar. However, I
have noticed that somebody else has said that the signal may have bounced
off a third party to produce the ghost. I agree with them.




I know that you weren't able to understand that explanation - so I'll

have
another go. A Ghost is a false image on your Radar screen.


Thats not correct either.

Anyone else wanna try to provide the correct answer before I set Donal

strait?

Go on Joe .... set me strait.

Regarghds


Ok Its a radar signal thats source can not be readily determined. Or
its a signal that is not repeated on each and every sweep that is made
by your radar.

Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.

You should write your radar mfg. and let them know the true meaning of
a ghost, they assume that a ghost is not a real target and in doing so
they might get someone hurt if they are running at high speeds. Often
huge stumps return ghost signals as they bob in and out of the water.

Joe



Donal
--

  #13   Report Post  
Nav
 
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Default Ghost



Joe wrote:

Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.



So what is an radar angel?

Cheers

  #14   Report Post  
otnmbrd
 
Posts: n/a
Default Ghost



Joe wrote:


Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.


Prime example of "One man's ghost" is another man's intermittent target.
I wouldn't call any of you wrong, once I understood what your
description was, though your above does not fall into MY description of
"ghost" even though I can see where it might from your perspective.


otn

  #15   Report Post  
Bart Senior
 
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Default Ghost


Bart Senior wrote

Source for next bit was Dutton's.

A ghost image is a false image moving in parallel
of a real object being tracked. They tend to be
more of an arc shape or fuzzy in shape compared
to the sharper image or a real object.


My interpretation based on my radar training.

They are formed by the signal taking a longer
path to the object. Most commonly from a reflection
off some other part of a larger vessel. This could
change the beam shape of the radar. Sometimes
you can get echos off thunderstorms.


This next bit was a joke. An optical coupler can't be shorted out
because it's is a card with holes cut in and and blocks
or passes light to a sensor.

Or perhaps your optical coupler has shorted out. grin


Joe wrote

If you see a ghost on radar are you seeing boobsie?

If not what are you seeing, and how would you define a ghost?





  #16   Report Post  
Donal
 
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Default Ghost


"otnmbrd" wrote in message
ink.net...


Joe wrote:


Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.


Prime example of "One man's ghost" is another man's intermittent target.
I wouldn't call any of you wrong, once I understood what your
description was, though your above does not fall into MY description of
"ghost" even though I can see where it might from your perspective.


Otn,
Your post was so polite, that Joe might be under the false impression that
you agree with him.

I trust that my clarification will prevent lurkers from comimg to the false
conclusion that you don't know what you are talking
about.



Regards


Donal
--



  #17   Report Post  
otnmbrd
 
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Default Ghost



Donal wrote:

Joe wrote:


Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.


Prime example of "One man's ghost" is another man's intermittent target.
I wouldn't call any of you wrong, once I understood what your
description was, though your above does not fall into MY description of
"ghost" even though I can see where it might from your perspective.



Otn,
Your post was so polite, that Joe might be under the false impression that
you agree with him.

I trust that my clarification will prevent lurkers from comimg to the false
conclusion that you don't know what you are talking
about.


G As Stated, I wouldn't call Joe's "ghost" a "ghost", but I've become
a firm believer in "One man's fwd spring, is another man's after
spring", as I've heard many knowledgeable people use different
definitions to describe this phenomena.
For my money, the greatest cause of "ghost" is "operator error", i.e. to
much gain/intensity for the given range scale setting, though I would
also include odd ball targets where none exist due to any number of
possible causes .... keep in mind, I'm an operator not a technician,
though Gawd help the Techie that tries to tell me that some conditions
are normal for radar in general or a specific radar, when I know better.
As for people coming to false conclusions about the substance of what I
might say in a thread, hey, I'm good, but I'm not perfect ....show me
the errors.

otn

  #18   Report Post  
Joe
 
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Default Ghost

"Donal" wrote in message ...
"otnmbrd" wrote in message
ink.net...


Joe wrote:


Sometimes a ghost is a reflection that you and nav describe, sometimes
it is an object that is so low or has such a lousy return that it only
shows up when you and the target or on the crest of waves or when the
target is ata angle to reflect your signal. So it may indeed be a real
target but when it keeps disappearing and returning from the scope it
is called a ghost.


Prime example of "One man's ghost" is another man's intermittent target.
I wouldn't call any of you wrong, once I understood what your
description was, though your above does not fall into MY description of
"ghost" even though I can see where it might from your perspective.


Otn,
Your post was so polite, that Joe might be under the false impression that
you agree with him.

I trust that my clarification will prevent lurkers from comimg to the false
conclusion that you don't know what you are talking
about.



Regards


Donal
--


Hey Donal, Do not take my word for it, look it up in Bowditch the
American pratical navigator.

Joe
  #19   Report Post  
Donal
 
Posts: n/a
Default Ghost


"Joe" wrote in message
om...
Hey Donal, Do not take my word for it, look it up in Bowditch the
American pratical navigator.


What is Bowditch?


Regards


Donal
--





  #20   Report Post  
jlrogers±³©
 
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Default Ghost

Donal wrote:
What is Bowditch?


Now that is funny!
--
jlrogers±³©
Never date a woman you can hear ticking. - Mark Patinkin

Eschew Obfuscation.


 
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