NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: About GPS again
From: Richard B. Langley
Date: 2013 May 31, 14:06 -0300
From: Richard B. Langley
Date: 2013 May 31, 14:06 -0300
On 2013-05-31, at 1:58 PM, Robert Wyatt wrote: > However, the article doesn't suggest using celestial nav as a fall back, rather it suggests "chart, compass and visual bearings." > > Of course there's also the Selective Availability mode which is said to have been disabled around 2000--not sure if that's true. Yes it is. "Selective availability (SA) was set to zero on all satellites by presidential order on May 2, 2000 at approximately 4:00 UT." (http://www.gpsworld.com/the-almanac/) -- Richard Langley > ---------------------------------------------------------------- > NavList message boards and member settings: www.fer3.com/NavList > Members may optionally receive posts by email. > To cancel email delivery, send a message to NoMail[at]fer3.com > ---------------------------------------------------------------- > > : http://fer3.com/arc/m2.aspx?i=124224 > ----------------------------------------------------------------------------- | 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/ | -----------------------------------------------------------------------------
