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Groups > sci.physics.relativity > #378795
| From | "Paul B. Andersen" <relativity@paulba.no> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: The challenge Ralph Rabbidge aka Henry Wilson never met |
| Date | 2016-03-13 09:52 +0100 |
| Organization | albasani.net |
| Message-ID | <nc39o7$27f$1@news.albasani.net> (permalink) |
| References | (5 earlier) <nbn7ui$1ko9$1@gioia.aioe.org> <nbpujp$e8c$1@news.albasani.net> <nbq3cr$2uu$1@gioia.aioe.org> <nbrsk3$15b$1@news.albasani.net> <nc1pd5$uks$1@gioia.aioe.org> |
On 12.03.2016 20:07, Henry Wilson wrote:
> On Thu, 10 Mar 2016 14:25:13 +0100, Paul B. Andersen wrote:
> ...the usual crap
So Ralph snips everything and repeats his mantra:
https://paulba.no/div/Ralph_listening.pdf
>> On 09.03.2016 22:08, HGW wrote:
>
> Don't try to wriggle out Paul. The clocks are software aligned with the
> ground clocks after launch. After that, only small daily corrections are
> needed by way of a small clock offset sent with the signals.
> The GR correction plays no part in the GPS system and was merely a
> publicity stunt for the name of Einstein.
>
OK, I take this as a capitulation.
Ralph Malcom Rabbidge hasn't even tried to answer
the question he failed to answer back in 2011:
By how much would the time reported by the satellite
drift off sync between each update of the 'clock offset'
if the clock rate weren't corrected by the -4.4647E-10
correction factor?
And the reason is that he doesn't like the answer he
would have to give considering these facts:
To understand the facts below it is necessary to know what
is meant by "clock time", "clock offset" and "reported time":
The actual satellite clock (the phase) called the "clock time"
is never corrected while the satellite is in service.
The "clock time" which is transmitted by the satellite
may be several us, (or even hundreds of us in some cases)
off sync from the GPS-time.
But the satellite is monitored by ground stations, and
the clock error is measured. The error, called the "clock offset",
is uploaded to the satellite typically once a day.
The satellite will transmit this "clock offset" together
with the "clock time". The correction is made in the receiver,
the corrected "reported time" = "clock time"-"clock offset".
See:
https://paulba.no/temp/GPS_clocks.pdf
Fact #1:
| All frequency standards in GPS satellites always were
| and still are adjusted by -4.4647E-10 before launch.
Comment:
As this correction is specified in the official
specification for the satellites, it is an indisputable fact.
http://www.gps.gov/technical/icwg/IS-GPS-200H.pdf
(See chapter 3.3.1.1)
Fact #2:
| No in flight tuning of the frequency
| is necessary to make the GPS-work.
| (If the "clock offset" is daily uploaded)
Comment:
The GPS was working for years with Block I
satellites only, and no in-flight adjustment
of their frequency was possible. This proves
that the pre launch adjusted frequency of the standards
was sufficiently correct.
But since the precision of the frequency standards are
in the order of 1E-12 (mostly better, though), a worst
case scenario will be that they during one day may drift
as much as 80ns off sync. So a daily update of
the "clock-offset" would be necessary to keep the reported
time from the satellites within 100ns of GPS-time.
The Block IIR satellites, which can be frequency adjusted
in flight, are better than the Block I satellites, so
these would obviously also work with no in flight adjustment,
if the "clock offset" is uploaded daily. But the point with
the in-flight frequency adjustment is to compensate for
the drift of the frequency standards in order to increase
the autonomy of the satellites; they can work for a very
long time with no new upload of "clock offset".
Fact #3:
| For the GPS to work, the reported time
| ('clock time' - 'clock offset') from the SV
| must be in sync with the GPS time to within 100ns.
Comment:
So the frequency of the satellite must be correct
to better than ~E-12.
Fact #4:
| The GPS works.
Comment:
Which proves that the frequencies of the satellites are
correct within ~E-12.
Fact #5:
| GPS-time is running with the rate defined by
| clocks on the geoid. (SI-seconds)
Comment:
The rate of GPS-time is defined by the ground clocks,
and the SV clocks must run at the same rate as observed
from the ground.
Fact #6:
| Each satellite will every day have a period of at least
| 12 hours where no measurement is made, and during which
| no update of the 'clock-offset' is possible.
Comment:
So the period between uploads of the "clock-offset"
is at least 12 hours.
Are there any of these facts you don't think are facts, Ralph?
In that case, please give references showing what are the correct facts.
--
Paul
https://paulba.no/
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The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-05 12:36 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met pcardinale@volcanomail.com - 2016-03-05 07:23 -0800
Re: The challenge Ralph Rabbidge aka Henry Wilson never met HGW <hgw@...> - 2016-03-06 09:42 +1100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Helene Swanhild <helenes@gardenclosure.org> - 2016-03-05 23:02 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Gary Harnagel <hitlong@yahoo.com> - 2016-03-05 15:27 -0800
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Helene Swanhild <helenes@gardenclosure.org> - 2016-03-05 23:31 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Gary Harnagel <hitlong@yahoo.com> - 2016-03-05 15:26 -0800
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-06 13:14 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Henry Wilson <HGW@home.com> - 2016-03-07 19:09 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-07 22:15 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Henry Wilson <HGW@home.com> - 2016-03-08 19:08 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-09 20:46 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met HGW <hw@...> - 2016-03-10 08:08 +1100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-10 14:25 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Henry Wilson <HGW@home.com> - 2016-03-12 19:07 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Gary Harnagel <hitlong@yahoo.com> - 2016-03-12 14:48 -0800
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-13 14:08 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-13 09:52 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-13 12:00 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-13 14:14 +0100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-13 13:45 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Tom Roberts <tjroberts137@sbcglobal.net> - 2016-03-13 13:15 -0500
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-13 18:58 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Tom Roberts <tjroberts137@sbcglobal.net> - 2016-03-14 11:07 -0500
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-14 17:45 +0000
Re: The challenge Ralph Rabbidge aka Henry Wilson never met paparios <paparios@gmail.com> - 2016-03-14 11:03 -0700
Re: The challenge Ralph Rabbidge aka Henry Wilson never met HGW <HGW@home.com> - 2016-03-15 05:49 +1100
Re: The challenge Ralph Rabbidge aka Henry Wilson never met Koobee Wublee <koobee.wublee@gmail.com> - 2016-03-05 23:29 -0800
Re: The challenge Ralph Rabbidge aka Henry Wilson never met "Paul B. Andersen" <relativity@paulba.no> - 2016-03-06 13:13 +0100
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