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GPS' indulgence about GR



 
 
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  #1  
Old March 3rd 08 posted to sci.physics.relativity
Albertito
external usenet poster
 
Posts: 609
Default GPS' indulgence about GR

Why the military side of GPS does not use GR corrections,
but the civilian side does? Is it because GPS serves positions
more accurately without the GR correction offsets?

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  #2  
Old March 3rd 08 posted to sci.physics.relativity
Eric Gisse
external usenet poster
 
Posts: 15,991
Default GPS' indulgence about GR

On Mar 3, 1:26 am, Albertito wrote:
Why the military side of GPS does not use GR corrections,


It does. Go away.

http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf

but the civilian side does? Is it because GPS serves positions
more accurately without the GR correction offsets?


  #3  
Old March 3rd 08 posted to sci.physics.relativity
Albertito
external usenet poster
 
Posts: 609
Default GPS' indulgence about GR

On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:

Why the military side of GPS does not use GR corrections,


It does. Go away.

http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf

I can't see any reference for GR corrections in that
paper. Can you help?. Or is it that that paper is a farce,
and you're being dishonest?

  #4  
Old March 3rd 08 posted to sci.physics.relativity
Dirk Van de moortel
external usenet poster
 
Posts: 15,037
Default GPS' indulgence about GR

Albertito wrote in message

On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:

Why the military side of GPS does not use GR corrections,


It does. Go away.


Asking the neighbours' pest kid to go away is guaranteed
to keep him around forever.


http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf

I can't see any reference for GR corrections in that
paper. Can you help?.


Shall we hold your hand while you are searching for the
string "relativistic"?
Should we tell you which buttons to press?

Or is it that that paper is a farce,
and you're being dishonest?


Or is it a puberal thing?

Dirk Vdm
  #5  
Old March 3rd 08 posted to sci.physics.relativity
Albertito
external usenet poster
 
Posts: 609
Default GPS' indulgence about GR

On 3 mar, 11:42, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO-
SperM.hotmail.com wrote:
Albertito wrote in message



On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:


Why the military side of GPS does not use GR corrections,


It does. Go away.


Asking the neighbours' pest kid to go away is guaranteed
to keep him around forever.



http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf


I can't see any reference for GR corrections in that
paper. Can you help?.


Shall we hold your hand while you are searching for the
string "relativistic"?
Should we tell you which buttons to press?

Or is it that that paper is a farce,
and you're being dishonest?


Or is it a puberal thing?

Dirk Vdm


It is hard to believe, but let us assume GR were correct.
Why would GPS need relativistic corrections?. If GR were
correct you wouldn't need to do any correction at all in the
orbital atomic clocks. It would suffice to perform relativistic
computations in the receiver device. I'll tell you what is
happening. You put relativistic corrections on those
orbital clocks, trying to synchronize them. Then, when
the PGS signals are received by a receiver device, it
performs relativistic computations. Why? Because it is
required to undo the relativistic offsets!. IOW, firstly you
put the error in the orbital clocks, and then the receiver must
undo that error if you want to attain a good GPS position.
That sounds like a farce!

It's classified information (top secret), but military GPS
do use neither GR corrections nor relativistic computations.
And you won't give that classified information to the enemy,
will you?

  #6  
Old March 3rd 08 posted to sci.physics.relativity
Eric Gisse
external usenet poster
 
Posts: 15,991
Default GPS' indulgence about GR

On Mar 3, 3:31 am, Albertito wrote:
On 3 mar, 11:42, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO-



SperM.hotmail.com wrote:
Albertito wrote in message




On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:


Why the military side of GPS does not use GR corrections,


It does. Go away.


Asking the neighbours' pest kid to go away is guaranteed
to keep him around forever.


http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf


I can't see any reference for GR corrections in that
paper. Can you help?.


Shall we hold your hand while you are searching for the
string "relativistic"?
Should we tell you which buttons to press?


Or is it that that paper is a farce,
and you're being dishonest?


Or is it a puberal thing?


Dirk Vdm


It is hard to believe, but let us assume GR were correct.
Why would GPS need relativistic corrections?.


Because the uncorrected clocks will be off by ~50,000 ns/day relative
to Earth clocks. Light speed is ~1ft/ns. That is what is known as a
"bad thing".

If GR were
correct you wouldn't need to do any correction at all in the
orbital atomic clocks. It would suffice to perform relativistic
computations in the receiver device.


Or better yet, do everything on the satellite so the receivers don't
have to.

I'll tell you what is
happening. You put relativistic corrections on those
orbital clocks, trying to synchronize them. Then, when
the PGS signals are received by a receiver device, it
performs relativistic computations. Why? Because it is
required to undo the relativistic offsets!. IOW, firstly you
put the error in the orbital clocks, and then the receiver must
undo that error if you want to attain a good GPS position.
That sounds like a farce!


That sounds like a strawman!


It's classified information (top secret), but military GPS
do use neither GR corrections nor relativistic computations.
And you won't give that classified information to the enemy,
will you?


www.google.com "selective availability"

You don't know what you are talking about.
  #7  
Old March 3rd 08 posted to sci.physics.relativity
Eric Gisse
external usenet poster
 
Posts: 15,991
Default GPS' indulgence about GR

On Mar 3, 2:33 am, Albertito wrote:
On 3 mar, 10:57, Eric Gisse wrote: On Mar 3, 1:26 am, Albertito wrote:

Why the military side of GPS does not use GR corrections,


It does. Go away.


http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf


I can't see any reference for GR corrections in that
paper. Can you help?. Or is it that that paper is a farce,
and you're being dishonest?


Page 28. Compare and contrast with http://relativity.livingreviews.org/...es/lrr-2003-1/.

The relativistic timing correction is such an incredibly small part of
the system, yet idiots like you continually babble on and on about it.
Get educated or get the **** out.

  #8  
Old March 3rd 08 posted to sci.physics.relativity
Dirk Van de moortel
external usenet poster
 
Posts: 15,037
Default GPS' indulgence about GR

Albertito wrote in message

On 3 mar, 11:42, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO-
SperM.hotmail.com wrote:
Albertito wrote in message



On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:


Why the military side of GPS does not use GR corrections,


It does. Go away.


Asking the neighbours' pest kid to go away is guaranteed
to keep him around forever.



http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf

I can't see any reference for GR corrections in that
paper. Can you help?.


Shall we hold your hand while you are searching for the
string "relativistic"?
Should we tell you which buttons to press?

Or is it that that paper is a farce,
and you're being dishonest?


Or is it a puberal thing?

Dirk Vdm


It is hard to believe,


For someone who knowns nothing, everything is hard to believe, so
don't panic.

Dirk Vdm

  #9  
Old March 3rd 08 posted to sci.physics.relativity
PD
external usenet poster
 
Posts: 16,616
Default GPS' indulgence about GR

On Mar 3, 6:31*am, Albertito wrote:
On 3 mar, 11:42, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO-





SperM.hotmail.com wrote:
Albertito wrote in message


*


On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:


Why the military side of GPS does not use GR corrections,


It does. Go away.


Asking the neighbours' pest kid to go away is guaranteed
to keep him around forever.


http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf


I can't see any reference for GR corrections in that
paper. Can you help?.


Shall we hold your hand while you are searching for the
string "relativistic"?
Should we tell you which buttons to press?


Or is it that that paper is a farce,
and you're being dishonest?


Or is it a puberal thing?


Dirk Vdm


It is hard to believe, but let us assume GR were correct.
Why would GPS need relativistic corrections?. If GR were
correct you wouldn't need to do any correction at all in the
orbital atomic clocks. It would suffice to perform relativistic
computations in the receiver device. I'll tell you what is
happening. You put relativistic corrections on those
orbital clocks, trying to synchronize them. Then, when
the PGS signals are received by a receiver device, it
performs relativistic computations. Why? Because it is
required to undo the relativistic offsets!. IOW, firstly you
put the error in the orbital clocks, and then the receiver must
undo that error if you want to attain a good GPS position.
That sounds like a farce!

It's classified information (top secret), but military GPS
do use neither GR corrections nor relativistic computations.
And you won't give that classified information to the enemy,
will you?- Hide quoted text -

- Show quoted text -


Ah, so in your mind, GR is a military disinformation campaign. It's
all a clever ploy to get the Rooskies to add a bogus algorithm to
modify the timing of their clocks, and then secretly undo the
algorithm in our own satellites. The Rooskies, of course, will be too
stupid and backwards to have any scientific evidence of GR one way or
the other, so they'll just do what we let them think they have to do.
Curse the genius of those CIA folks!

PD
  #10  
Old March 3rd 08 posted to sci.physics.relativity
Paul B. Andersen[_2_]
external usenet poster
 
Posts: 165
Default GPS' indulgence about GR

Albertito skrev:
On 3 mar, 10:57, Eric Gisse wrote:
On Mar 3, 1:26 am, Albertito wrote:

Why the military side of GPS does not use GR corrections,

It does. Go away.

http://www.navcen.uscg.gov/gps/geninfo/IS-GPS-200D.pdf

I can't see any reference for GR corrections in that
paper. Can you help?. Or is it that that paper is a farce,
and you're being dishonest?


3.3.1.1 page 14.
"The SV [space vehicle] carrier frequency and clock rates --
as they would appear to an observer located in the SV --
are offset to compensate for relativistic effects. The clock
rates are offset by delta_f/f = -4.4647E-10, equivalent to
a change in the P-code chipping rate of 10.23 MHz offset by
a delta_f = -4.5674E-3 Hz. This is equal to 10.22999999543 MHz."


--
Paul

http://home.c2i.net/pb_andersen/
 




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