Pioneer 10 rx error and tx frequencies?
1)Re error: Craig,you say that the received frequency power in
the FFT diagram is centered on the specific frequency of the
local oscillator frequency that most closely matches in phase and
frequency the received frequency. You say it is by eyeball
estimation about 15 to 20db above the values at other
frequencies.
So, Craig, George, Is it unnecessary to reconcile this error
estimate with the difference between the recieved oscillations of
voltage and the oscillations produced by a local oscillator at a
specifc rms amplitude at the selected frequency made to match
most closely in phase the received oscillations and then modified
in frequency to maintain the close match?
Perhaps so. But what about the degree of correspondence of zero
crossings in the selected in phase local oscillator sequence of
oscillating voltages and the corresponding sequence of zero
crossings in the reduced(intermediate)representation of the
received frequency?
I should think that this would be indicative of the
reliability of the 'detected' frequency and phase given to the
local oscillator and would have some relationship to the 100db
Sig/Noise or whatever indicated FFT frequency with the most
power.??
2)Re transmitted frequency: For the nth time where is the
transmitted frequency or is this just something you make up to
give the predicted Doppler result assuming the speed of light
delay?
3)Re received frequencies.In the tracking data logical record,
item 31 and 32 gives Doppler Count in units of 1000 time the
number of cycles. I gather this corresponds to Craig's Doppler
count which is instead in units of cycles.
What item gives the FSKY minus 2292000000Hz?
4)re p6 of DSN 810-005 Rev.E/202,Rev.A
"The uplink carrier frequency is synthesized with the exciter
...... [at the receiver site] ...The uplink carrier may be either
constant or varied in accord with a tuning plan. In either case,
the phase of the[synthesized] uplink carrier is recorded for use
in the computation of a Doppler effect."
This sounds to me like the transmitted frequency at the
assumed transmission site is simulated at the receiver site and
used in computing the expected frequency.
5)Thus unless it is possible to determine the transmit
frequency at the receiving site it will not be possible to test
the hypothesis that light speed does not extrapolate beyond 1
second(ie beyond r for r/c1). If the transmit frequency at the
receiving site is known to be the same as the transmit frequency
at the assumed site then of course it would be possible to test
this hypothesis.
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