"Szczepan Bialek" napisał w wiadomości
...
Using words astronomical radio annual doppler effect we have:
The link:
http://chaos.swarthmore.edu/courses/...er_Anomaly.pdf
"It is also possible to infer the position in the sky of a
spacecraft from the Doppler data. This is accomplished by
examining the diurnal variation imparted to the Doppler shift
by the Earth's rotation. As the ground station rotates underneath
a spacecraft, the Doppler shift is modulated by a sinusoid.
The sinusoid's amplitude depends on the declination
angle of the spacecraft and its phase depends upon the right
ascension. These angles can therefore be estimated from a
record of the Doppler shift that is ~at least! of several days
duration. This allows for a determination of the distance to
the spacecraft through the dynamics of spacecraft motion
using standard orbit theory contained in the orbit determination
programs."
On the page 37 is wrote: "At early times the
annual term is largest. During Interval II, the interval of the
large spin-rate change anomaly, coherent oscillation is lost.
During Interval III the oscillation is smaller and begins to die
out."
Who was right: Arago or Vogel?
S*