[time-nuts] From GPS World - Lightsquared has been given the goahead

[Don Latham]

sooooo, once the safety of life equipment is in place, with controlled
purchase of receivers no doubt, the consumer signals can be shut off at
will. And we're SOL. Neat.
cynical Don

Mark Spencer
> That's quite possible, another option is that aviation receivers may err
> on the
> side of caution and not use GPS signals that are considered to be degraded
> beyond a certain level.   This is just speculation on my part.  
>
> As other posters have pointed it seems a bit ironic that shortly after
> shutting
> down Loran in the US this issue emerges, although I seem to recall there
> is a
> move towards a new GPS frequency band for safety of life applications (the
> L5
> Signal IIRC ?)
>
> Your comment about the improvements in signal processing is a good one and
> pondering this issue a bit more I wonder how much advancement has occurred
> in
> timing receivers over the years versus consumer devices which likely have
> a
> shorter product cycle.   This may lead to more issues in timing
> applications.
>
>
>
> ----- Original Message ----
> From: jimlux <jimlux at earthlink.net>
> To: time-nuts at febo.com
> Sent: Wed, February 2, 2011 6:45:29 AM
> Subject: Re: [time-nuts] From GPS World - Lightsquared has been given the
> goahead
>
>
> what was interesting is that the jamming/fail to get fix was at a closer
> distance for the consumer receiver than for the FAA approved receiver
> for aircraft.  Maybe it's better signal processing in the (presumably
> newer) consumer receiver.
>
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-- 
"Neither the voice of authority nor the weight of reason and argument are
as significant as experiment, for thence comes quiet to the mind."
R. Bacon
"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don Latham AJ7LL
Six Mile Systems LLP
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POB 134
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www.lightningforensics.com
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