On 10 Sep 2009, at 11:15, James Turner wrote: > The last part I'm not totally sure about - it makes localizers > *very* sensitive - maybe I've adapted the code incorrectly, but this > doc: > > http://www.allstar.fiu.edu/aerojava/ILS.htm > > indicates that at 10nm, the beam should be approx 1m (statue or > nautical, I don't know) wide (with some variation for the runway > aspect formula) - and it feels much, much narrower than that to me, > though I haven't tested this rigourously.
After some further testing, I'm happier that the LOC sensitivity is plausible, though I still think it's a bit narrow. This is based on flying (level) perpendicular to the localizer beam at 10nm out - if the width is really 1nm (which it may not be), I'd expect it to take 20 seconds for the needle to move from peg to peg at 180kts ground- speed (approximately). Instead it's much more rapid, on the order of four or five seconds. (I realise it's not the greatest methodology for verifying sensitivity) Regards, James ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
