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.