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Re: No matter where you go, there they are.

To: Paul_Koning/US/3Com%[email protected]
Subject: Re: No matter where you go, there they are.
From: "Perry E. Metzger" <[email protected]>
Date: Thu, 11 Apr 1996 15:01:24 -0400
cc: [email protected]
In-reply-to: Your message of "11 Apr 1996 13:26:11 EDT." <9604112026.AA8065@>
Reply-To: [email protected]
Sender: [email protected]

Paul_Koning/US/3Com%[email protected] writes:
> Suppose I want to pretend that I am 1000 feet closer to satellite 4 than 
> I really am.  Simple, I take the signals from all the other satellites
> and delay them by 1 microsecond.  That looks like a 1 microsecond
> local timebase error together with a 1 microsecond delay reduction
> to satellite 4.

Aren't things even worse? Since the satelite signals are not
authenticated with anything like public key methods, couldn't I just
synthesize a signal appropriate to any spot on the planet, knowing the
positions of the satelites relative to that spot?

Perry

References:
- Re: No matter where you go, there they are.
  - From: Paul_Koning/US/3Com%[email protected]

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