[time-nuts] GPSCreations SDR (software defined receiver) GPS1A

jimlux jimlux at earthlink.net
Mon Jan 17 01:29:07 UTC 2011

On 1/16/11 5:19 PM, Magnus Danielson wrote:
> On 01/16/2011 09:12 PM, Brooke Clarke wrote:
>> Hi Pete:
>> The SiGe receiver IC is not much use by itself since you need to
>> literally be a rocket scientist in order to process its output data.
>> The GPS1A, with open source software is interesting, but again you need
>> to be a rocket scientist to modify the code.
> I haven't launched or made any part (to the best of my knowledge) of any
> rocket. Yet again I've been able to write software which can
> post-process the data originating from this device.
> Real time processing of it would be challenging, but I haven't spent
> quality time on THAT problem.

real time processing of *anything* is challenging, even if it's only 
updating once an hour.  I write this because updating once an hour 
implies you are probably looking at data spanning months, and keeping a 
program or set of programs reliably running without a hiccup for months 
is non-trivial.  Sure, we've all got anecdotes of "my machine only 
needed to be rebooted 6 months ago", but there's a difference between 
seeing that in the past, and guaranteeing it for the future.

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