"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
DOT Releases Report Assessing Vulnerability ... of Global Positioning System http://www.navcen.uscg.gov/gps/geninfo/pressrelease.htm Looks like SA won't be turned off during crises, since theater based jamming was found to be effective. -- Wolfgang Henke WH Networks
Wolfgang Henke wrote:
DOT Releases Report Assessing Vulnerability ... of Global Positioning System
http://www.navcen.uscg.gov/gps/geninfo/pressrelease.htm
Looks like SA won't be turned off during crises, since theater based jamming was found to be effective.
-- Wolfgang Henke WH Networks
Unless the theater was our homeland. Then they would turn it on (not off - it's a positive act) globally. The jamming would deny access entirely, and that's too extreme for the USA. -- Regards Marshall Eubanks T.M. Eubanks Multicast Technologies, Inc 10301 Democracy Lane, Suite 410 Fairfax, Virginia 22030 Phone : 703-293-9624 Fax : 703-293-9609 e-mail : tme@multicasttech.com http://www.on-the-i.com Test your network for multicast : http://www.multicasttech.com/mt/ Check the status of multicast in real time : http://www.multicasttech.com/status/index.html
Robert E. Seastrom wrote:
"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.
I know my Garmin 195 functions in real life up to about 462 knotts. I don't know what it's shutdown point for real life is, as I haven't ever been able to deploy it in an environment going faster than that. I also know that in simulator mode, it is good to about 1000 knotts. If I remember correctly, the SCUD is subsonic. As such, I believe the Garmin would handle it.
Resist the cycle of content-free posts to NANOG...
---Rob
Owen -- *********************************************************************** "Every time you turn on your new car, you're turning on 20 microprocessors. Every time you use an ATM, you're using a computer. Every time I use a settop box or game machine, I'm using a computer. The only computer you don't know how to work is your Microsoft computer, right?" - Scott McNealy, CEO of Sun Microsystems, Inc., from an April 1997 interview in Upside Magazine *********************************************************************** "One World, One Web, One Program." - Microsoft Promotional Ad "Ein Volk, Ein Reich, Ein Führer" - Adolf Hitler
On Wed, 26 Sep 2001, Owen DeLong wrote:
If I remember correctly, the SCUD is subsonic. As such, I believe the Garmin would handle it.
given a burn time of 60-80 seconds and a range of 300-700km I'd expect scuds to be considerably faster than subsonic. the federation of american scientists has far more information about about weapons of mass destruction than you probably want to know. http://www.fas.org/nuke/guide/index.html
Resist the cycle of content-free posts to NANOG...
---Rob
Owen
-- -------------------------------------------------------------------------- Joel Jaeggli joelja@darkwing.uoregon.edu Academic User Services consult@gladstone.uoregon.edu PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E -------------------------------------------------------------------------- It is clear that the arm of criticism cannot replace the criticism of arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of the right, 1843.
At 10:11 26/09/01 -0700, Joel Jaeggli wrote:
On Wed, 26 Sep 2001, Owen DeLong wrote:
If I remember correctly, the SCUD is subsonic. As such, I believe the Garmin would handle it.
given a burn time of 60-80 seconds and a range of 300-700km I'd expect scuds to be considerably faster than subsonic.
After having about 39 pass over my head 10 years ago, I can attest that they are definitely faster than subsonic :-) -Hank
the federation of american scientists has far more information about about weapons of mass destruction than you probably want to know.
http://www.fas.org/nuke/guide/index.html
Resist the cycle of content-free posts to NANOG...
---Rob
Owen
-- -------------------------------------------------------------------------- Joel Jaeggli joelja@darkwing.uoregon.edu Academic User Services consult@gladstone.uoregon.edu PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E -------------------------------------------------------------------------- It is clear that the arm of criticism cannot replace the criticism of arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of the right, 1843.
i suspect the person wanting to use gps/sa for circuit timing was presuming their pop would not be moving very fast. if it was to move fast, i suspect they would have problems more severe than timing. randy
i suspect the person wanting to use gps/sa for circuit timing was presuming their pop would not be moving very fast. if it was to move fast, i suspect they would have problems more severe than timing.
randy
Hmmm...don't know...if we're talking about survivable networks, maybe an airborne POP would be one direction. The buffers on the fiber links, however, would REALLY need to be elastic.
: "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. There's also acceleration/decceleration effects: in a missile that goes from zero to 'sweet mother of Abraham Lincoln!!!' in less than the time it takes to send a content-free post to NANOG, a commercial (off-the-shelf) GPS won't last til the projectile reaches max V. : Resist the cycle of content-free posts to NANOG... =-) Peace, Petr -- Systems, Networks and Gadgets, done with Artful Intelligence -<>-<_>-<__>-<_>-<>- Policy: ASCII/text attchmnts alway read. PDF maybe read. Others, by necessity, may be ignored. Don't take it personally, it's a time issue.
participants (9)
-
Hank Nussbacher -
Howard C. Berkowitz -
Joel Jaeggli -
Marshall Eubanks -
Owen DeLong -
Petr Swedock -
Randy Bush -
rs＠seastrom.com -
wolfgang＠whnet.com