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Re: Formula for dis. between two points on the Globe
From: Pierre H Boucher
Date: 1996 Oct 21, 15:21 EDT
From: Pierre H Boucher
Date: 1996 Oct 21, 15:21 EDT
<Ben Smith wrote : >Hello, >Is there somebody that hase the Formula to calculate the distans >between two points on the globe. >eg. 52 29.66N and 52 32.86N > 005 02.45E 004 40.67E >My GPS tells me that it is 13.6nm CTS106 To compute the distance the formula is: Distance = arcCOS (( sinL2 x sinL1 ) + ( cosL2 x cosL1 x cosDLo )) To compute the course: Course in quadrant = arcCos (( sinL2 - ( cosD x sinL1 )) / ( sinD x cosL1 ) L1 and L2 = Latitudes DLo = Difference of longitude D = distance as compute by the first formula Important note: convert all datas as dd.dddd Ex: 52d 29.66' = 52.4944d If L1 and L2 are of contrary names enter L2 as negative. Hope this help, Pierre Boucher N CPS code 16-32
