Re: [Starlink] Signal Structure of the Starlink Ku-Band Downlink

[Hesham ElBakoury <helbakoury@gmail.com>]

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What was Elon Musk reaction to this research?

Hesham

On Fri, Jun 23, 2023, 9:12 AM David Fernández via Starlink <
starlink@lists.bufferbloat.net> wrote:

> I think that paper has already been discussed in this list. It
> appeared in the news a while ago:
> https://www.theregister.com/2022/10/24/starlink_signal_decoded_for_use
>
> Regards,
>
> David
>
> > Date: Fri, 23 Jun 2023 06:17:08 -0700
> > From: Joe Hamelin <nethead@gmail.com>
> > To: Hesham ElBakoury <helbakoury@gmail.com>
> > Cc: starlink@lists.bufferbloat.net
> > Subject: Re: [Starlink] Signal Structure of the Starlink Ku-Band
> >       Downlink
> > Message-ID:
> >       <CAO0-hXar-KaB=p=
> HGeGe39vAKTeG5RHBxSgioccOj+R4Nt7yeA@mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Most interesting:
> >
> > " VIII. CONCLUSIONS We have developed and applied a blind signal
> > identification technique to uncover the frequency- and time-domain
> > structure of the Starlink Ku-band downlink signal. We further identified
> > four synchronization sequences that can be used to *passively exploit*
> > Starlink signals for pseudorange-based positioning, navigation, and
> timing
> > (PNT), and explicitly evaluated two of these. The results in this paper
> > illuminate the *path to use of Starlink signals as a backup to
> traditional
> > GNSS* for PNT."
> >
> > On Fri, Jun 23, 2023 at 6:09 AM Joe Hamelin <nethead@gmail.com> wrote:
> >
> >>
> >>
> https://radionavlab.ae.utexas.edu/wp-content/uploads/2023/01/starlink_structure.pdf
> >>
> >> Here's the PDF.
> >>
> >> On Fri, Jun 23, 2023 at 2:55 AM Hesham ElBakoury via Starlink <
> >> starlink@lists.bufferbloat.net> wrote:
> >>
> >>> Has anyone looked at this paper (Signal Structure of the Starlink
> >>> Ku-Band Downlink) by Todd E. Humphreys ? This paper will be published
> in
> >>> IEEE Transactions on Aerospace and Electronic Systems. Are there other
> >>> research efforts which try to do the same?
> >>>
> >>> Thanks
> >>>
> >>> Hesham
> >>>
> >>>
> >>> _______________________________________________
> >>> Starlink mailing list
> >>> Starlink@lists.bufferbloat.net
> >>> https://lists.bufferbloat.net/listinfo/starlink
> >>>
> >>
> >>
> >> --
> >> --
> >> Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474
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