Re: Orbit Determination with doppler shifts - anyone else use it here, what are your results? (NOAA18 results)

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 9 Sep 2021 21:50:46 +0200
Hi Andreas,

On Thu, Sep 9, 2021 at 9:29 PM Andreas Hornig via Seesat-l
<seesat-l_at_satobs.org> wrote:
> does anyone here determine orbits with doppler shift measurements of the
> satellite's radio signals and has some feedback for me on how well they can
> determine the orbits?

My STRF suite of tools is being used extensively for identifying
Doppler curves and for determining orbits based on Doppler curves. If
you search back through the SeeSat-L history you will find posts
detailing the results.
See https://github.com/cbassa/strf for the software.

The precision of the orbits will depend on the frequency stability of
the RF receiver, as well as the transmitter onboard of the satellite,
and the amount of data captured. In the past we've been able to
determine radio orbits which allowed observing the satellite in the
optical with offsets of less than a degree.

Regards,
    Cees
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Received on Thu Sep 09 2021 - 14:51:46 UTC

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