NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip-meter again
From: Richard B. Langley
Date: 2012 Apr 10, 15:02 -0300
From: Richard B. Langley
Date: 2012 Apr 10, 15:02 -0300
The first TRANSIT satellite was launched in 1961. The system was declared operational in 1964 and became classified. In 1967 it was declassified and became available for civilian use. -- Richard Langley On 10-Apr-12, at 2:47 PM, Alexandre E Eremenko wrote: > > Fred, > I afraid they did not. > I am talking of early 60-s. It is to this epoch that > the first submarine missiles and unguided Minuteman belong. > I doubt that in the early 60-s Americans had a satellite nav > comparable to Cel Nav in accuracy. > > All this can be of course checked on the Internet. > The guidance of missiles and Sat Nav systems, > when they started to use them. > > So here is a clearly stated Question to the list: > > When the first satellite based nav system came into use, > which superceded Cel Nav in accuracy ? > (I am sure someone has a ready ans). > > Alex. > > On Tue, 10 Apr 2012, Fred Hebard wrote: > >> >> The Americans may have had satellite nav then; the Transit series >> of satellites. I believe they had to know where they were. >> >> On Apr 10, 2012, at 9:49 AM, Alexandre E Eremenko wrote: >> >>> >>> Fred, >>> >>>> Just as a side note, one reason the Soviets may have >>>> been more interested in dip than others is that anomalous dip is >>>> more common in the Arctic (and Antarctic). >>> >>> And I assume you have to know the position of your submarine >>> very exactly, to be able to hit your target with an ICBM :-) >>> Perhaps this was the reason why Schufeldt report was classified? >>> >>> Alex. >>> >>> P.S. I am not sure about early submarine ICBM, but once I visited >>> an old Minuteman silo in Wyoming (it is open for the public). I >>> was surprised that the missile >>> was unguided. It was aimed only at the start by a sophisticated >>> aiming >>> arrangement, involving a hudge graduated ring... For this you need >>> to know your launching position >>> very exactly. >>> >>> >>> >>> >> >> >> >> >> >> : http://fer3.com/arc/m2.aspx?i=118894 >> >> >> > > > ----------------------------------------------------------------------------- | Richard B. Langley E-mail: lang@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3 | | Fredericton? Where's that? See: http:// www.fredericton.ca/ | -----------------------------------------------------------------------------
