Re: GPS Question

From: Paul Burridge (pb_at_notthisbit.osiris1.co.uk)
Date: 10/26/04 

Date: Tue, 26 Oct 2004 13:11:32 +0100

On Tue, 26 Oct 2004 14:57:45 +1300, "Country Loon"
<fitlikemin@mearns.fairmers.co.uk> wrote:

>Ok but can somebody please explain why the Iraqis did not jam the GPS for
>the cruise missiles? Or is it that they have a back up system ie a terrain
>following guidance system.Or is the GPS the back-up?

There's more than one GPS frequency. The commercially available
jammers only wipe out the domestic GPS systems. The military stuff is
about 400Mhz away from that. Of course that wouldn't stop someone who
knew what they were doing from making a military band jammer, but
you're unlikely to see one of those on open sale! 

-- 
"What is now proved was once only imagin'd." - William Blake, 1793.

Relevant Pages

  • Recommendations, please: GPS & Mapmaking software for PC
    ... a device which will give GPS guidance as well as record/replay GPS ... Allows for multiple stops along the way. ... Verbal guidance is slow 50% of the ...
    (sci.geo.satellite-nav)
  • Re: Garmin 530 "101"
    ... discussion of this below, but the basic info is about 3 AMUs, change ... software, change GPS antenna, change antenna cable, new 16mb data ... I believe that the CDI on the nav page is GPS only. ... terrain, BUT the terrain is available as a separate upgrade, for ~.5 AMU. ...
    (rec.aviation.owning)
  • Re: Conventionally-Armed Trident Missiles.
    ... GPS terminal guidance is envisioned for such a ICBM-based ... guidance system used by the cruise missiles of that day. ... >> B-52 or the SLCM...all have demonstrated a nuclear delivery capability, ...
    (sci.military.naval)
  • Re: Successful Missile Defence Test Shows Technology Not "Unproven".
    ... later we deployed GPS. ... Yes, celestial navigation - on the bus, not the RVs, isn't it? ... How much of that is "it flies, but guidance isn't right?" ...
    (sci.military.naval)
  • Re: Learning curve on Garmin 430 and GPS approaches
    ... > localizer display within the GPS for localizer guidance. ... both for ILS and GPS approaches. ... guidance along one of those approaches if your NAV1 instrument ever fails. ...
    (rec.aviation.student)
Quantcast