Szczepan Bialek wrote:
"Jim Lux" napisal w wiadomosci
...
Szczepan Bialek wrote:
Uzytkownik "Jim Lux" napisal w wiadomosci
...
Speed of light in space is known thanks Roemer.s method. Now are radio
transmitters on the Mars and is possibility to use the Roemer's method
for radio waves. NASA know the results. Are thy pulished?

Of course, they're published. Widely. I would check Journal of
Geophysical Research or similar publications.

As a practical matter, precise measurements of the time of flight
to/from a spacecraft is used to figure out where the spacecraft is and
its radial velocity.

Typical range accuracy is on the order of a few meters, velocities good
to a few cm/s, for something at the orbit of Neptune or Uranus.

Precise doppler measurements are used for radio science experiments,
e.g. to determine the internal structure of a planet or moon by
precisely measuring the orbit of a satellite. A typical performance for
such a measurement is 1 part in 1E15 over 1000 seconds at 32 GHz or
8GHz.
Roemer's method is the one way measurement. See:
http://www.mathpages.com/home/kmath203/kmath203.htm

We know where Jovian is so the one way measurement is possible. With
spacecraft it is impossible.
not true. We do one way measurements from spacecraft all the time. A high
quality oscillator (aka USO)is used to generate a set of phase coherent
signals at different frequencies.

Look at PN ranging or Sequential Ranging.

But the Mars is the best. Are available data for the Mars?

I don't know why Mars would be the best..

But you might start with googling "ranging Mars radiometric" or
something like that.
Or the usual tracking down the papers thing starting with one that talks
about it, and will have references.
http://seismo.berkeley.edu/~manga/folkner.pdf might give a start.
One of the footnotes mentions Viking data at S-band.

Journal of Geophysical Research (aka JGR) is where a lot of this seems
to show up.

You could search for works by authors who do this kind of thing, too.
Folkner, Asmar, Oudrhiri, Iess, Armstrong are all worth searching for.
I'd do a search for the author name AND "ranging"



For more "raw data" try the NASA Planetary Data System archive
http://pds.nasa.gov/

You're going to be on your own to find the relevant data files. Try
"radio science" as a search term.