GPS World: USNO's Fountain: Time at 100 Trillionths of a Second

Discussion in 'General GPS Discussion' started by Sam Wormley, Jan 23, 2009.

  1. Sam Wormley

    Androcles Guest

    In the meantime, I am still chuckling over Strich.9’s comments:

    Anderthal - pretend professor from norway.
    Sam - community college teacher.
    Eric - physics BS flunkie
    PD - children's book writer
    Tom Roberts - backwater IIT professor
    Koobee Wublee - aetherialist mystic.

    The myth promoted by Maxwell Dingleberries is forever
    shattered by the simple but righteous junior-high mathematics.

    Ahahaha...

    Thanks for the laughs, folks.
     
    Androcles, Feb 3, 2009
  2. Sam Wormley

    Scotty Guest

    Sam,

    Ah well, add me to the above list. Serious question though.

    Is it not true that any frequency can be used as a clock to measure the
    signal flying time? Relativistic effects or not. The GPS receiver extracts
    the clock from the signal anyway.

    The fact that we have compensated the frequency shift is merely a
    convenience to give us a 10MHz frequency standard and a "standard" second
    for stationary clocks?

    So it is a true statement that GPS does not depend on Relativity just on an
    accurate clock provided that we know what that frequency is.

    Thanks,
    Scotty.
     
    Scotty, Feb 3, 2009
  3. Sam Wormley

    Sam Wormley Guest

    Potter, when one compares predictions of relativity compared
    to classical models, relativity wins every time. Methinks it's
    time for Potter to embrace relativity, instead of blustering
    against it, frothing at the mouth, and whatever.

    Some current applications:
    o global navigation satellite systems (GNSS)
    o particle accelerators, research and medical
    o relativity nicey explains many observed phenomina
    in astronomy and astrometry

    Applications of Special Relativity
    http://physics.nmt.edu/~raymond/classes/ph13xbook/node48.html

    Oh, and Potter, don't forget Relativity, Mass Energy
    Equivalence and Nuclear Reactions.

    "The result from the theory of relativity that Mass and Energy are
    different manifestations of the same physical entity and that it
    is possible to convert mass into energy finds an application in
    the processes of nuclear fission and nuclear fusion.

    "In the process of nuclear fission, a large unstable nucleus such
    as that of Uranium-235 decays into two smaller nuclei.
    Interestingly, the sum of masses of these two nuclei is smaller
    than the mass of the original larger nucleus. This "mass defect"
    is responsible for the release of a large amount of energy in this
    process of nuclear fission. The difference in mass, when multiplied
    with the square of the speed of light in vacuum (that is, c2),
    gives the amount of energy released in the process by the famous
    equation e = mc^2.

    Hey Potter, for a bit of education about the application of relativity
    to the Global Positioning System (GPS), see:
    http://edu-observatory/gps/gps_books.html#relativity

    "Relativity in the Global Positioning System" by Neil Ashby
    "Relativistic Effects on Satellite Clocks" by Neil Ashby
    "General Relativity in the Global Positioning System" by Neil Ashby
    "Can GPS Test Gravity's Speed of Propagation?" by Neil Ashby
    "General Relativity in the Global Positioning System" by Neil Ashby

    "Relativity of GPS Measurement" by Thomas B Bahder
    "Real-World Relativity: The GPS Navigation System" by Richard W. Pogge
    "Student Project on the Global Positioning System" by E.F. Taylor
    "Einstein's Relativity and Everyday Life" by Clifford M. Will
    "General Relativity in the Global Positioning System" by Clifford M. Will


    Potter, you would learn an lot if you sat down for a few days with the
    reference below... but I suspect that you don't have the academic or
    intellectual capability to work through the material and gain insight
    for the considerations that must be taken into effect. The last time
    you tried or pretended to try... your fixed on an offset value and tried
    to convince yourself that it didn't have anything to do with relativity.
    Your attitude appears to be, "I can't understand this shit, so therefore
    it is wrong, or not needed".

    The literature is there for all to learn from... Many sources. It's OK
    to admit it is beyond your grasp, Potter. It's OK!

    See: Relativistic Effects on Satellite Clocks
    http://relativity.livingreviews.org/open?pubNo=lrr-2003-1&page=node5.html
    http://relativity.livingreviews.org/Articles/lrr-2003-1/frctfrq.png
     
    Sam Wormley, Feb 3, 2009
  4. Sam Wormley

    Sam Wormley Guest


    Any frequency will do... What is important is to account for the
    difference (due to time dilation) of satellite clocks and ground
    based clocks, as they must be synchronized in global navigation
    satellite systems. General relativity beautifully predicts those
    differences and is incorporated in to the GPS Specs. The later URL
    below is a graphic showing the sign and degree of time dilation as
    a function of altitude.

    See: Relativistic Effects on Satellite Clocks
    http://relativity.livingreviews.org/open?pubNo=lrr-2003-1&page=node5.html
    http://relativity.livingreviews.org/Articles/lrr-2003-1/frctfrq.png

    Temptation gets the better of me now:

    If we beamed you up, Scotty, to one of the GPS satellites, the
    relativistic corrections would be applied to the ground based clocks
    from your perspective. But the more traditional perspective is for
    the ground (or near ground) down on the planet.
     
    Sam Wormley, Feb 3, 2009
  5. Sam Wormley

    Sam Wormley Guest

    Ignorance can be cured, Koobee. Stooooopidty on the other hand is
    forever. Which will it be for you? For a bit of education about the
    application of relativity to the Global Positioning System (GPS),
    see:

    http://edu-observatory/gps/gps_books.html#relativity

    "Relativity in the Global Positioning System" by Neil Ashby
    "Relativistic Effects on Satellite Clocks" by Neil Ashby
    "General Relativity in the Global Positioning System" by Neil Ashby
    "Can GPS Test Gravity's Speed of Propagation?" by Neil Ashby
    "General Relativity in the Global Positioning System" by Neil Ashby

    "Relativity of GPS Measurement" by Thomas B Bahder
    "Real-World Relativity: The GPS Navigation System" by Richard W. Pogge
    "Student Project on the Global Positioning System" by E.F. Taylor
    "Einstein's Relativity and Everyday Life" by Clifford M. Will
    "General Relativity in the Global Positioning System" by Clifford M. Will

    See: Relativistic Effects on Satellite Clocks
    http://relativity.livingreviews.org/open?pubNo=lrr-2003-1&page=node5.html
    http://relativity.livingreviews.org/Articles/lrr-2003-1/frctfrq.png
     
    Sam Wormley, Feb 3, 2009
  6. Sam Wormley

    Strich.9 Guest

    So why are you desperately trying to defend relativity? We all know
    it has failed two major tests, the LIGO and GPB. What's in it for
    you...
     
    Strich.9, Feb 3, 2009
  7. Sam Wormley

    Strich.9 Guest

    Educating people about the error of Einstein is not a waste of
    resources. In fact, the error of Einstein has cost the government a
    lot of money. As for you, your education has been a waste of
    resources. Your overstaying in school is a waste of school space for
    other students, professor's time, and other incidental resources. If
    you are concerned about waste, why not do something productive, like
    graduating on time.
     
    Strich.9, Feb 3, 2009
  8. Sam Wormley

    hanson Guest

    ------- ahahahahaha.... AHAHAHAHAHAHAHA... ------Koobee Wublee wrote:
    In the meantime, I am still chuckling over Strich.9’s comments:
    Anderthal - pretend professor from norway.
    Sam - community college teacher.
    Eric - physics BS flunkie
    PD - children's book writer
    Tom Roberts - backwater IIT professor.The myth promoted by Einstein Dingleberries is forever
    shattered by the simple but righteous junior-high mathematics.
    Ahahaha... Thanks for the laughs, folks."Androcles" thought he could get away with it & wrote:
    In the meantime, I am still chuckling over Strich.9’s comments:
    Anderthal - pretend professor from norway.
    Sam - community college teacher.
    Eric - physics BS flunkie
    PD - children's book writer
    Tom Roberts - backwater IIT professor
    Koobee Wublee - aetherialist mystic.The myth promoted by Maxwell Dingleberries is forever
    shattered by the simple but righteous junior-high mathematics.
    Ahahaha... Thanks for the laughs, folks.hanson wrote:
    Andro, your prime worry and grief was Einstein's con in your
    often stated "AB.. same speed issue". That issue seems to be
    over-shadowed now and has taken second stage to be
    replaced by the Maxwell's Aether which now frosts your arse
    and burns your peepee... ahahaha...
    Your ever increasing phobia & worsening hysteria you suffer from,
    due to the Maxwellian Aether, seems to overwhelm any residue
    of rationality that you still harbor... ahaha... haha.. AHAHAHAHAThe issue here is "Eric Gisse" <>, the
    "jowr" aka the "Junior Of Whining Relativists" (credit goes to
    you for that one), who is even more desperate then is Sam,
    in his hope that Einstein's crap was/is needed for GPS... but#### **** GPS NEVER NEEDED neither SR nor GR ****
    #### Not for its design, manufacturing, testing nor operations...But now, Andro, since you are bent on and insist to give your
    street corner performance to rid the Maxwellian Aether, which so
    plagues you, please tell your story about your remedy with your
    Ring Laser that seems to be intrinsically plagued by its own
    Ringworms in form of that defect, the "lock-in" at very slow
    rotation rates"... ahahahaha....That fucking Aether just won't go away, doesn't it, Andro...
    You may trod it down, but it's in vain...cuz just like the dust
    it will rise again, and again and again... ahahaha.....So, Andro, what properties does your ordinary 3D space have?
    If space can be bent then Einstein is right.. which you say he isn't.
    And if the Aether is only seen by aetherialist mysticism... then
    either you placed yourself between a rock and a hard place, in
    your chase... or you have Napoleon's syndrome. Poor guy. Pity.But thanks for the laughs, mate... ahahahaha... ahahahanson
     
    hanson, Feb 3, 2009
  9. Methinks it’s time for you to actually learn what relativity is all
    Total nonsense!
    What applications? The link is merely a tutorial. Please something
    more relevant next time.
    Mass and energy relation went back much further. <shrug>

    Don’t you love the whining arguments of Einstein Dingleberries. In
    one instance, they are trumpeting mass-energy equivalence. In another
    instance, when it is pointed out to them that the Cosmological
    constant representing negative energy density in vacuum must also
    indicate negative mass density. This concept is utterly ridiculous as
    if the champions of this stupidity have not graduated from elementary
    schools or something. Ahahaha…
    I bet Sam does not understands all that stuff that is why he is still
    Even if you do not correct any of the frequencies involved:

    ** Almanac signal (50bits/sec), the payload
    ** Chipping rates: 10.23MHz and 1.023MHz
    ** Carriers: 1-2GHz, RF

    http://electronicdesign.com/Articles/Index.cfm?ArticleID=15475

    It is time for Sam to actually learn how GPS works. <shrug>
     
    Koobee Wublee, Feb 3, 2009
  10. Sam Wormley

    Sue... Guest

    Sue..., Feb 3, 2009
  11. Sam Wormley

    Eric Gisse Guest

    Would that be before or after you actually reference the actual
    specifications? We've been giving them to you since you started
    posting under this name and you still don't understand, nor have you
    ever cited anything remotely authoritative on the subject.
     
    Eric Gisse, Feb 3, 2009
  12. Sam Wormley

    Tom Potter Guest

    As I indicated, what General Relativity needs
    are USERS, not more conmen, cultists, propagandists,
    babble-masters, and parrots.

    I was disappointed to see that Sammy
    tried to create all kinds of strawmen, and that he
    posted the same old references to papers
    written by self-serving General Relativity Gurus
    on the taxpayer dole,

    rather than posting about how the General Relativity Gurus
    are serving society and making lots of money
    by using their powerful, esoteric knowledge,

    like the people who possessed information on
    integrated circuits, RADAR, fibreoptics, LASERS,
    digital communications, digital computers, networking, DNA, etc.

    General Relativity must be great
    because Time Magazine, the New York Times,
    and the Washington Post declared it the
    greatest intellectual achievement of all time,
    and made Einstein the "Man of the Century".

    If they wrote, it must be true.

    --
    Tom Potter
    http://tdp1001.spaces.live.com/
    http://www.tompotter.us/misc.html
    http://www.geocities.com/tdp1001/index.html
    http://notsocrazyideas.blogspot.com
    http://www.flickr.com/photos/tom-potter/
    http://tdp1001.wiki.zoho.com
    http://groups.msn.com/PotterPhotos
    http://www.androcles01.pwp.blueyonder.co.uk/dingleberry.htm
     
    Tom Potter, Feb 4, 2009
  13. Sam Wormley

    Dono Guest

     
    Dono, Feb 4, 2009
  14. Sam Wormley

    Kevin Horton Guest

    I don't have a stake in this fight. I am simply looking to learn.
    The difference between the clock speed on the GPS satellites and the
    speed that the same clock would run at on the ground appears to be
    well established. I would be interested to learn of any published
    papers that show a calculation of what the clock speed difference
    should be, using effects other than relativity.

    Or, could one of the "relativity doesn't exist" folks detail a
    calculation of what the clock speed difference should be, using the
    causes that you consider as most likely. If your approach is valid, I
    would expect that it should yield the clock speed difference that has
    been observed on the GPS satellites.

    Have a good day.

    Kevin Horton
     
    Kevin Horton, Feb 4, 2009
  15. Sam Wormley

    Sam Wormley Guest

    You made no case. Niether project has data that contradicts predictions
    of relativity. He [Strich] is a fool that lovers prove; And leaves to
    sing, to lives in pain.
     
    Sam Wormley, Feb 4, 2009
  16. There are no definitive requirements to say the satellite clock
    frequency must be with certain percentage of the ground clock
    frequency. This is explained by the manufacturers of GPS receivers.

    http://www.gpsinformation.org/dale/theory.htm
    For example, the satellite clock can all tick at 1.000GHz +/- 0.5Hz
    while the ground clock can tick at 577.9874MHz +/- 10.67MHz.

    When your receiver receives almanac information from four satellites
    with each giving its time, altitude, longitude, and latitude, you can
    form a set of four equations with four unknowns. The unknowns are
    your satellite time (nothing to do with ground time), your altitude,
    your longitude, and your latitude.

    Professor Andersen knew this, but trying to promote the nonsense of SR
    and GR, he proposed a fairy-like mysterious function to the GPS where
    this mystic function requires the synchronization of the satellite and
    ground clocks. Professor Roberts recently understood this. In doing
    so, you also proposed a top-secret military function built into the
    GPS that also requires the synchronization of the satellite and the
    ground clocks. It becomes a faith issue. However, I call the bluffs
    of these professors. I do not buy the mysticism they try to promote
    for SR and GR. <shrug>
     
    Koobee Wublee, Feb 4, 2009
  17. Sam Wormley

    Androcles Guest

    I don't have a stake in this fight. I am simply looking to learn.
    =========================
    Ok.

    The difference between the clock speed on the GPS satellites and the
    speed that the same clock would run at on the ground appears to be
    well established.
    ==========================
    Your evidence for this prejudice?

    I would be interested to learn of any published
    papers that show a calculation of what the clock speed difference
    should be, using effects other than relativity.

    Or, could one of the "relativity doesn't exist" folks detail a
    calculation of what the clock speed difference should be, using the
    causes that you consider as most likely. If your approach is valid, I
    would expect that it should yield the clock speed difference that has
    been observed on the GPS satellites.
    ===============================
    No "clock speed difference" has been observed, other than the normal
    differences one would expect from one clock to another. My wrist
    watch doesn't keep exact pace with my computer, neither do I expect
    it to as long as it is reasonable and +/- 3 minutes a year is adequate.
    I can still time a car journey with it as accurately as I'll ever need.
    Indeed, no two satellites keep exactly the same time either, and
    there are FIVE atomic clocks being averaged at the US Naval
    Observatory, so obviously they don't keep exact time individually
    either.
    The Tom-tom or Garmin sat-nav that almost everybody owns these
    days doesn't have an atomic clock, therefore nobody is finding a
    difference between the clock speed on the GPS satellites and the
    speed that the same clock would run at on the ground. Yet these
    devices work to everyone's satisfaction, the main complaint being
    map errors, not positional errors, which remains +/-15 metres
    horizontally. Quite simply, the device only uses satellite time.

    To say that relativity is needed for GPS to function is as ridiculous
    as saying the weight of an ant needs to be known to weigh an elephant,
    only a crank fanatic would make such a claim.

    What kind of lunacy prompted Einstein to say
    the speed of light from A to B is c-v,
    the speed of light from B to A is c+v,
    the "time" each way is the same?

    Here it is:
    http://www.fourmilab.ch/etexts/einstein/specrel/www/figures/img22.gif

    The dorks will deny he ever did.
    According to Cretin

    Easy: he did NOT say that.
    According to cretin van lintel, Einstein did not write the equation he
    wrote.
    ________________________________________________________
    According to Imbecile Jimmy Black:

    " In neither system (meaning frame of reference in modern-day terminology)
    is the speed of light c-v or c+v. In both systems the speed of light is c."

    According to Imbecile Jimmy Black, Einstein did not write the equation he
    wrote.
    ________________________________________________________
    According to Cretin Dork Bruere

    I don't give a damn what Einstein wrote.
    ________________________________________________________
    According to Lying Little Shit Matthew Johnson

    And even the question is wrong! For he never said any such thing.
    This should be painfully obvious from what he _did_ say,
    namely, that the vacuum speed of light is a constant of nature,
    invariant under all admissable [sic] transformations between
    inertial reference frames.

    Apparently LLS Matthew Johnson has rewritten Einstein's paper.

    A team of scientists working under the direction of researchers from the
    University of Sussex have recently discovered that Einstein did not say
    "inertial".

    According to LLS Matthew Johnson, Einstein did not write the equation he
    wrote.
    ________________________________________________________
    According to Chief Wanker Uncle Stooopid Schwartz:

    "c+v appears nowhere in the paper, nor could it. [sic]
    According to Chief Wanker Uncle Stooopid, Einstein did not write the
    equation he wrote.
    ________________________________________________________
     
    Androcles, Feb 4, 2009
  18. Sam Wormley

    Eric Gisse Guest

    Would this be a bad time to point out that not only do the
    specifications say otherwise, and that page isn't from a manufacturer,
    and the page specifically states that a timing precision of 100ns must
    be maintained?

    [snip]
     
    Eric Gisse, Feb 4, 2009
  19. There are no definitive requirements to say the satellite clock
    frequency must be with certain percentage of the ground clock
    frequency. This is explained by the manufacturers of GPS receivers.

    http://www.gpsinformation.org/dale/theory.htm

    For example, the satellite clock can all tick at 1.000GHz +/- 0.5Hz
    while the ground clock can tick at 577.9874MHz +/- 10.67MHz.

    When your receiver receives almanac information from four satellites
    with each giving its time, altitude, longitude, and latitude, you can
    form a set of four equations with four unknowns. The unknowns are
    your satellite time (nothing to do with ground time), your altitude,
    your longitude, and your latitude.

    Professor Andersen knew this, but trying to promote the nonsense of SR
    and GR, he proposed a fairy-like mysterious function to the GPS where
    this mystic function requires the synchronization of the satellite and
    ground clocks. Professor Roberts recently understood this. In doing
    so, you also proposed a top-secret military function built into the
    GPS that also requires the synchronization of the satellite and the
    ground clocks. It becomes a faith issue. However, I call the bluffs
    of these professors. I do not buy the mysticism they try to promote
    for SR and GR. <shrug>
     
    Koobee Wublee, Feb 4, 2009
  20. Sam Wormley

    Eric Gisse Guest

    Classic kooby - you see a point you can't argue about, so you snip it
    and repeat the previous assertions.

    Content restored:

    Would this be a bad time to point out that not only do the
    specifications say otherwise, and that page isn't from a manufacturer,
    and the page specifically states that a timing precision of 200ns must
    be maintained?

    [snip]
     
    Eric Gisse, Feb 4, 2009
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