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

["David Fernández" <davidfdzp@gmail.com>]

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
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>>>
>>
>>
>> --
>> --
>> Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474