chapter  8
2 Dead reckoning
Pages 1

Calculating the great circle distance between

two positions defined by an angle is illustrated in

Figure 8.5. The distance between two positions

defined by their respective latitudes and

longitudes, (lat1, lon1) and (lat2, lon2), can be

calculated from the formula:

d = cos−1(sin(lat1) × sin(lat2) + cos(lat1) × cos

(lat2) × cos(lon1−lon2))

Figure 8.5 Calculation of great circle distances