GPS does Not use Einstein relativity.

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Einstein relativity is false

Einstein relativity causes twin paradox in GPS clocks, so wrong.

(Fig.1)  Two satellite clocks A and B moving around the earth cause twin paradox, which shows Einstein relativity is wrong.

GPS does Not use Einstein relativistic time dilation, which is useless, paradoxical.

Contrary to the standard explanation, GPS satellite clocks do Not use Einstein relativity which is said to cause time difference between GPS satellite and the earth's receiver clocks ( this-lower-conclusion,  this 5~6th-paragraphs,  this p.1-introduction ).

This extremely tiny time difference by this (fictional) relativity is meaningless, because the receiver's cheap clocks often cause large time errors (= irrelevant to relativity, this p.2-1st-paragraph ), and the time difference between satellite's and receiver's clocks can be corrected by using 4 satellites without using Einstein relativity ( this p.7 ).

GPS is irrelevant to relativity.

Furthermore, GPS clocks cause errors by a lot of factors such as atmosphere (= so GPS clock time disagrees with relativistic prediction, this-middle,  this-p.2-3,p.6-conclusion ), which must be constantly corrected by being compared with the earth ground station's clocks ( this p.2,  this p.4 ) irrelevant to relativity.

This-3rd-last~2nd-last paragraph say
"If it were necessary to accommodate for relativity at different latitudes and altitudes, the calculations would be very complex and would need to be done at the receiver. But they aren't done there: only a fixed time adjustment is made at the satellites for all points on Earth. This fact alone demonstrates that Relativity is irrelevant to the GPS operation.

"Conclusion  The presence of Special and General Relativity effects has No bearing on the accuracy of GPS operation. In summary, it wouldn't matter whether clocks aboard GPS satellites ran faster or slower than Earth's clocks or even changed their speed each day."

GPS satellite clocks causing twin paradox disprove Einstein relativity.

When two satellites A and B are moving around the earth at the same velocity v in the opposite directions at the same height (= distance between satellites and the earth's center is always r ), Einstein relativity causes twin paradox in these satellite clocks.

From the perspective of a satellite B (= B's rest frame ), the satellite A's clock is moving and running slower according to Einstein special relativity.

But from the perspective of a satellite A (= A's rest frame ), the satellite B's clock is moving and running slower.

↑ Which satellite clock A or B is moving and running slower is paradoxical (= called twin paradox ), so Einstein relativity is wrong.

In this case, general relativistic (= gravitational ) time dilation is irrelevant, because the distances between the earth center and two satellites are always the constant r, causing the same gravitational potential and No gravitational time dilation difference between two satellites A and B.

Furthermore, from the perspective of the satellite A (or B), the satellite A (or B ) is free-falling (= called inertial frame ) where the earth's gravity is canceled by centrifugal force, so No general relativistic time dilation is involved in comparing these two satellites' clock time, and only special relativistic time dilation (= moving clocks run slower ) and twin paradox occurs ( this p.2-left-upper,  this p.2-left-2. ).  → Einstein relativity is wrong.

Sagnac effect showed light speed changed by observers' motion, which contradicts Lorentz transformation and relativistic mass (of satellite ), disproving Einstein relativity.

In fact, Einstein relativity, Lorentz transformation based on the constant light speed c measured by any observers are proved to be wrong by Sagnac effect where the light speed is faster (= c + V ) or slower (= c - V ) than light speed c by the earth spinning speed V.

From the perspective of satellite A (or B ), all things appear to be rotating around the earth in the opposite direction, which is the rotating (= accelerating ) frame (= rotating coordinate ) involving general relativity.

Solving twin paradox needs the unrealistic faster-than-light satellite, so Einstein relativity is false.

The problem is Einstein special relativity based on Lorentz transformation contradicts the special relativity derived from the general relativity (= rotating frame of very large radius corresponds to linear motion of special relativity ), which self-contradiction disproves Einstein relativistic theory.

General relativistic rotating coordinate allowing the light speed to be changed by the earth motion disagrees with Einstein relativity based on the constant light speed c.

Because, according to Sagnac effect, when two satellites A and B are moving at a very high speed of 0.6c in the opposite direction, the satellite A (or B ) appears to be moving faster than light (= 0.6c × 2 = 1.2c,  c is light speed ), and the relativistic mass of this faster-than-light satellite becomes unrealistic imaginary mass, seen by the other satellite B (or A ).

If general relativistic Sagnac effect is right (= light speed is changed by observer's motion, which contradicts special relativistic Lorentz transformation, this p.7-1st-paragraph,  this p.2-right-middle~lower ), the observed light speed must be changed not only by the earth spinning (= this is experimentally observed ) but also by the satellite's velocity (or the earth's rotating around the Sun = which is also rotating frame ), which is not observed, hence, relativistic interpretation of Sagnac effect is self-contradictory and wrong.

Sagnac effect where light speed is changed only by the earth's spinning (= Not by the satellite's velocity nor by the earth rotating around the Sun ) can be explained only by the medium (= light aether ) moving with the earth (= light speed is c inside this earth medium ), but the earth medium is unfixed to the earth's spinning (= light speed is changed by the earth spinning, as observed in Sagnac effect ) like the atmospheric molecules.

Overhyped news hides Einstein relativistic time dilation is wrong, meaningless.

In a nutshell and "challenges and oppotunieis" of this overhyped news headline (= hackneyed phrase = Einsein was right or something ) say
"The PHARAO mission will (= they still did Not confirm Einstein relativistic time dilation was right ) launch an atomic clock to the International Space Station to test Einstein’s theory of general relativity."

"it also poses challenges."  ← reliable measurement of the (illusory) tiny relativistic time dilation is impossible.

 

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