Re: GPS formulas



On Sat, 28 May 2005 22:54:06 -0400, "Richard Sloan"
<rsloan2003@xxxxxxxxxxx> wrote:

>I have been looking for formulas to help me create a special GPS device, I
>need to know distance from current position to a point (LAT,LONG) and also I
>need a function to let me know when I am passing by a point and if its to
>the left, right, ahead, or behind me, and it would be nice to know by how
>much.
>

Have a look at http://williams.best.vwh.net/avform.htm



--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
.



Relevant Pages

  • Re: GPS formulas
    ... >> I have been looking for formulas to help me create a special GPS device, ... >> need to know distance from current position to a point and also I ... > longitude difference changes with latitude. ... > say "roughly" because earth isn't really a sphere. ...
    (comp.arch.embedded)
  • GPS formulas
    ... I have been looking for formulas to help me create a special GPS device, ... need to know distance from current position to a point and also I ... these were referred to as great circle equations. ... I am not a math wiz, I am very good at math, but not to the point I could ...
    (comp.arch.embedded)
  • GPS formulas
    ... I have been looking for formulas to help me create a special GPS device, ... need to know distance from current position to a point and also I ... And for nearing I have used reather unsucessfully: ... Prev by Date: ...
    (sci.math)