Re: Electron size, shape and spin.Confusion and conflicts with Einstein's 1905 SR.

Den 22.03.2025 22:10, skrev rhertz:

Dear FULLY RETARDED Paul. I've extracted this part from your last post,
as A SAMPLE OF YOUR COMPLETE IGNORANCE, IDIOCY AND INDOCTRINATION.
 I told you that the GPS 10.23 Mhz is REGENERATED from the L1 received
carrier IN ANY GPS RECEIVER, which has a CHEAPER TCXO oscillator. This
recovery, made through PLL and filtering, is ESSENTIAL for the receiver
TO TIME THE ARRIVAL OF MARKS EMBEDDED IN THE L1 CARRIER.
 As you are A COMPLETE ASSHOLE, 100% IMBECILE AND LIVE WITH AN
INCREASINGLY FOSSILIZED BRAIN, I let that ChatGPT speak for me.
  Quoting Paul:
**********************************************************************
The rate adjustment is made to make the SV clock be in sync to UTC.
 Since all frequencies in the SV are derived from the same frequency
standard which is adjusted down by ((1-4.4669e-1), this has
the secondary effect that the L1 carrier is emitted as
1575.4199992966223 MHz, and will be 1575.42 MHz measured by UTC.
 When the carrier reaches the receiver it is Doppler shifted
up to  Δf/f = ± 1e-7  , up to 200 times the GR correction.

The frequency of the carrier is irrelevant, the receiver
must have bandwidth enough to receive the carriers from
up to 12 satellites. The carriers are all Doppler shifted
differently. > The satellites are not separated by their frequency, but
by their PRN sequence.
 **********************************************************************

Can you point out why the above is wrong?
Switching to DEEPSEEK:
Den 23.03.2025 00:12, skrev rhertz:

If there is any doubt, IMBECILE PAUL, this is the answer to the same
question, given by DeepSeek. Notice subtle enhancements to the answer of
ChatGPT.
 Don't choke, asshole.
 ------------------------------------------------------------------
Hi. Can you tell me how any GPS receiver recovers the
10.23 Mhz TCXO frequency of the GPS satellite from the reception of the
L1 carrier?

Note that you ask as if it is a fact that the receiver recovers the
10.23 MHz TCXO frequency of the GPS satellite from the reception of the
L1 carrier.
But there is no Temperature Compensated Crystal Oscillator in the
GPS SV. It is a VCXO (Voltage Controlled Crystal Oscillator)
in the phase locked loop in the frequency synthesiser, and the
frequency of this is 10.2299999954326 MHz.

Certainly! The process of recovering the 10.23 MHz TCXO (Temperature
Compensated Crystal Oscillator) frequency from the L1 carrier in a GPS
receiver involves several steps. Here's a high-level overview of how
this is typically done:

See? DEEPSEEK buy that the very precise oscillator in the SV
is a Temperature Compensated Crystal Oscillator! :-D

 1. Signal Reception and Downconversion
The GPS receiver first captures the L1 carrier signal, which is
transmitted at 1575.42 MHz.

The L1 carrier is modulated by a 10.23 MHZ (nominal) square signal.
The phase of the carrier is inverted every 97.75 ns
On top of that is data and PRN code modulated with frequency 1.023 MHz.
The result is a signal with bandwidth 15.345 MHz.
All SVs are  transmitting at the same frequency, so the receiver will
receive up to 12 L1 carriers, all differently Doppler shifted.

 This signal is then downconverted to an intermediate frequency (IF)
using a local oscillator (LO) in the receiver. The downconversion
process mixes the L1 signal with the LO signal to produce a lower
frequency signal that is easier to process.
 2. Carrier Phase Locking
The receiver uses a Phase-Locked Loop (PLL) to lock onto the carrier
frequency of the downconverted signal. The PLL adjusts the frequency of
a Voltage-Controlled Oscillator (VCO) to match the phase and frequency
of the incoming signal.

Lock to which carrier? There are several, all with bandwidth 15.345 Mhz
and slightly different center frequency.

 Once locked, the PLL can track the carrier frequency very precisely,
even in the presence of Doppler shifts caused by the relative motion
between the satellite and the receiver.

It locks to the 1.023 MHz PRN code!
Remember that a satellite is identified by its PRN code.
There is one phase locked loop for each satellite.
The phase locked loop will work as a kind of matched filter.
The input signal is compared to the PRN code, and when
the PRN code buried in the very noise-like signal matches
the PRN code, the phase lock loop will lock to it.
Of course the PRN code for the different satellites
will be slightly different due to Doppler shift.
But the difference is so small that the PRN codes will match.

 3. Extracting the Navigation Message
The L1 carrier is modulated with both the C/A (Coarse/Acquisition) code
and the P (Precise) code, as well as the navigation message.
 The receiver demodulates the signal to extract the navigation message,
which contains information about the satellite's orbit, clock
corrections, and other data necessary for positioning.
 4. Recovering the 10.23 MHz Clock
The 10.23 MHz frequency is the fundamental clock rate used by the GPS
satellites to generate both the C/A code and the P code.
 The receiver knows that the C/A code is generated at a rate of 1.023
MHz, which is exactly 1/10th of the 10.23 MHz clock.
 By locking onto the C/A code and measuring its chip rate, the receiver
can infer the 10.23 MHz clock rate. This is because the C/A code's chip
rate is directly derived from the 10.23 MHz clock.

Each satellite is now locked to the PRN and thus to the C/A code
and data for that particular SV can be extracted.

 5. Synchronization and Tracking
The receiver uses the recovered 10.23 MHz clock to synchronize its
internal clock with the satellite's clock. This synchronization is
crucial for accurate ranging and positioning.

A 10.23 MHz oscillator for Each satellite?
Of course the satellite must have an oscillator with
the frequency 1.023 MHz to generate the PRN codes for the SVs.
The phase locked loop work at this frequency.
A TCXO will do the job.

 The receiver continuously tracks the carrier phase and the code phase to
maintain synchronization with the satellite's signal.

How do you track the phase of 12 carriers on top of each other
where each carrier has a bandwidth 15.345 MHz and slightly different
center frequency?
The SVs are locked to their PRN code, and thus are tracked.

 6. Doppler Correction
The receiver also compensates for Doppler shifts, which affect both the
carrier frequency and the code rate. The Doppler shift is caused by the
relative motion between the satellite and the receiver.
 By accurately tracking the Doppler shift, the receiver can maintain
precise synchronization with the satellite's 10.23 MHz clock.
 7. Time Recovery
The receiver uses the recovered 10.23 MHz clock to reconstruct the
precise timing information necessary for calculating the time of flight
of the signal from the satellite to the receiver.

To find the time during the 6 minutes between the time signal is
transmitted, the receiver count the chips. The shipping frequency
as sent from the SV is precisely known, and it is the time at
the SV when the signal is sent that must be known.
So it doesn't really matter what the exact chipping frequency
is at the receiver.

 This timing information is essential for determining the receiver's
position.
 Summary
In summary, the GPS receiver recovers the 10.23 MHz TCXO frequency by
locking onto the L1 carrier, demodulating the C/A code, and using the
known relationship between the C/A code rate (1.023 MHz) and the 10.23
MHz clock. The receiver then uses this recovered clock to synchronize
its internal timing and accurately determine its position.

It seems like DEEPSEEK believes that there is but one satellite
that is sending a carrier to the the receiver.

 This process involves sophisticated signal processing techniques,
including phase locking, code correlation, and Doppler correction, all
of which are implemented in the receiver's hardware and software.
 ------------------------------------------------------------------
   Now go to your church of the pagan cult of relativity to cry, KING OF
ASSHOLES!

What was wrong in my statement you quoted at the top?
--
Paul
https://paulba.no/--
Paul
https://paulba.no/