Re: DECISION TIME ON LORAN

From: Steven Shelikoff (shelikoff_at_yawho.com)
Date: 06/16/04 

Date: Wed, 16 Jun 2004 13:20:56 GMT

On Tue, 15 Jun 2004 21:53:48 -0700, "Louis Cohen"
<louiscohen@alum.mit.edu> wrote:

>I thought loran was used for coastal navigation by ships - was it used by
>aircraft as well?

LORAN can work very well for aircraft because, while the absolute
accuracy isn't nearly as good as GPS, the repeatable precision is very
good, maybe even better than unaugmented GPS. So while LORAN can't tell
you as well as GPS exactly where you are in lat/lon, it can get you to a
known position (like the end of a runway) just as good as GPS. And
that's current LORAN with current receivers, not with all the
improvements the article mentioned.

Steve

Relevant Pages

  • Re: President, Congress Abandon National Infrastructure
    ... The following story constitutes an editorial opinion, based on current facts, by GPS World ... Loran] would be about $100 million, which is about the same cost as dismantling the ... the struggle to mount back-up system for GPS: Loran-C and eLoran, ... allows termination of Loran-C in Jan 2010. ...
    (sci.geo.satellite-nav)
  • President, Congress Abandon National Infrastructure
    ... The following story constitutes an editorial opinion, based on current facts, by GPS World editor Alan Cameron. ... It also delineated the consequent vulnerability of critical national infrastructure of several kinds, which depend upon GPS for highly precise timing, as well as position and navigation. ... Now the executive fist, seeking to wring some drop of financial savings from some obscure program somewhere, has clamped on Loran, the sole practical back-up to GPS, and throttled the life out of it. ... On October 28, President Barack Obama signed into law a bill that effectively terminates the struggle to mount back-up system for GPS: Loran-C and eLoran, a system that could prevent national and industrial infrastructure breakdown in the event of various probable disruptions, interference, or intentional jamming. ...
    (sci.geo.satellite-nav)
  • DECISION TIME ON LORAN
    ... Decision time is approaching on the future of Loran in the United ... back-up for GPS? ... Hope that a global navigation satellite system could constitute ... digital Loran-C receiver is to older systems ...
    (sci.geo.satellite-nav)
  • Re: DECISION TIME ON LORAN
    ... Enhanced loran is right around the corner, and it bears no resemblance to ... Accuracy comparable with GPS for enroute navigation and nonprecision ... digital Loran-C receiver is to older systems ...
    (sci.geo.satellite-nav)
  • Re: The end of LORAN
    ... not quite far enough to navigate to Bermuda. ... I got a GPS as soon as they became readily available in the early '90s ... For the cost it takes to keep the system running as a back up to GPS, ... The same argument applies to LORAN as it does to Morse - simple to ...
    (rec.boats)
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