[hpsdr] Gibraltar fanning out clock and 1pps to HORTON/CASMIR/MERCURY/..

[Achim Vollhardt]

Dear Phil,
nobody said interferometry is not hamradio.. we just have never (?)
tried it before, lacking the hardware!

Imagine the follwing situation: having an Phase-3 satellite in apogee
and gathering PRECISE recordings from let's say 20 stations with
almostidentical hardware spread over the hemisphere. I bet this will
push ranging to the next level :)

73s Achim, DH2VA



Philip Covington wrote:
> On 7/10/06, Achim Vollhardt <avollhar at physik.unizh.ch> wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Dear HPSDR group,
>> I would like to remind people about the coherent system approach Bob and
>> others mentioned some while ago:
>>
>> IF we manage to derive all signal path clocks from a single source
>> (let's assume a 10 MHz GIBRALTAR for now), this system will be able to
>> PRECISELY time any recorded signal to the sub-100 ns level! This opens
>> endless possibilities.. Maybe we also should route the 1pps signal from
>> GIBRALTAR to the backplane as an index marker to resolve any
>> ambiguities.. Long Baseline Interferometry comes into my mind here!
>>
>> To all designers: please have a look, if your cards can support this.
>>
>> I think it would be a shame to miss such an opportunity, up to now HPSDR
>> has all the things it needs for it.
>>
>> 73s Achim, DH2VA
> 
> Hi Achim,
> 
> Thanks for reiterating this point! We definitely will not miss this
> opportunity.  This should be reiterated frequently so that everyone
> keeps it in the back of their mind.  There is application for this
> stuff beyond ham radio and I want to make sure we accommodate those
> applications as well.
> 
> 73 de Phil N8VB
> 


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