nanog mailing list archives
Re: GPS SA and Network Timing
From: rs () seastrom com (Robert E. Seastrom)
Date: 26 Sep 2001 10:37:59 -0400
"Hire, Ejay" <Ejay.Hire () Broadslate net> writes:
In our next episode of Militant dictator How-to, we'll show you how to upgrade an antique scud missile to with a guidance system capable of 3-meter accuracy for less than $500.00 per unit.. Stay tuned!
Somehow, I find it difficult to believe I'm dignifying this with a response (much less a public one), but here goes: Every commercial GPS unit that I have ever seen has a speed which, if exceeded, will cause the unit to shut down (usually until power-cycled). It varies from unit to unit, but in every observed case was substantially (several times) less than the speed of such weaponry in flight. Commercial units also have altitude limits, with the same consequences for exceeding them. Integrating an OEM GPS module with existing avionics systems' targeting mechanism so it can actually cause the missile to adjust its course is left as an exercise to the local defense systems integrator. Resist the cycle of content-free posts to NANOG... ---Rob
Current thread:
- GPS SA and Network Timing Eric Germann (Sep 26)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Marshall Eubanks (Sep 26)
- <Possible follow-ups>
- RE: GPS SA and Network Timing Ian A Finlay (Sep 26)
- Re: GPS SA and Network Timing David Lesher (Sep 26)
- Re: GPS SA and Network Timing Valdis . Kletnieks (Sep 26)
- Re: GPS SA and Network Timing E.B. Dreger (Sep 27)
- Re: GPS SA and Network Timing David Lesher (Sep 26)
- RE: GPS SA and Network Timing Hire, Ejay (Sep 26)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Owen DeLong (Sep 26)
- Re: GPS SA and Network Timing Joel Jaeggli (Sep 26)
- Re: GPS SA and Network Timing Hank Nussbacher (Sep 27)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Wolfgang Henke (Sep 26)
- Re: GPS SA and Network Timing Marshall Eubanks (Sep 26)
- Re: GPS SA and Network Timing Randy Bush (Sep 26)
- Re: GPS SA and Network Timing Howard C. Berkowitz (Sep 26)
- Re: GPS SA and Network Timing Petr Swedock (Sep 26)