NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip-meter again
From: Lu Abel
Date: 2012 Apr 11, 14:11 -0700
From: Lu Abel
Date: 2012 Apr 11, 14:11 -0700
From an engineering viewpoint, Omega was a very interesting system. It relied on transmitting ultra LOW frequency radio waves. 10 kHz, as I recollect. Transmitters were set up around the world, with the result that a 400 m tall Omega antenna was the tallest man-made structure in at least two continents (Africa and Australia, if memory serves). It relied on the receiver constantly receiving Omega signals and counting phase shifts of the signal from a known starting location. Given this need, it would likely be impractical for submarine navigation.
From: Gary LaPook <garylapook@pacbell.net>
To: NavList@fer3.com
Sent: Tuesday, April 10, 2012 12:42 PM
Subject: [NavList] Re: Dip-meter again
No, the INS was for the submarine and came in, I believe, in the late '50s, for some reason 1957 sticks in my head.
Also there were other electronic systems that provided accurate navigation. LORAN-A, since WW2, LORAN-C in the '70s, and OMEGA.
gl
--- On Tue, 4/10/12, Alexandre E Eremenko <eremenko@math.purdue.edu> wrote:
From: Alexandre E Eremenko <eremenko@math.purdue.edu>
Subject: [NavList] Re: Dip-meter again
To: NavList@fer3.com
Date: Tuesday, April 10, 2012, 11:52 AM
Fred,
I suppose that when speaking of "inertial nav" as a guidance system,
they mean the nav of the missile itself, not of the submarine.
To use an inertiale nav in the missle one needs the position
of the starting point. This is what Sat nav was for.
Now we see Shufeldt's report in new light:-)
The reaseach was made in 1957-1961 :-)
And then classified.
Exactly at the time when they developed the Polaris A-1 missile...
When Transit became available, they declassified the Shufeldt report.
So now we know what "Precision Cel nav" was really for:-)
Alex.