[Proj] Distance calculations
al001 at uni-koeln.de
Fri Oct 17 15:34:13 EDT 2008
Oscar van Vlijmen wrote with respect to:
Tsutomu Saito, The computation of long geodesics on the ellipsoid through
Gaussian quadrature, Bull. Geod. 53 (1979), pp. 165-177
Sadly, these papers are not on-line for free.
I have a scanned copy of Saito 1979 in PDF
format. If anyone wants one, just ask off-line.
Although Bessel-Helmert is the basis for most
things we have been discussing, implementations
differ considerably and hence questions of
numerical accuracy and speed enter.
The Borre reference I cited in an earlier reply
has a matlab version called bessel_1.m which can
be downloaded from Borre's web site.or as
There is also a fairly short method due to
Sjöberg: Sjöberg LE (2006) Direct solutions to
the direct and indirect geodetic
problems on the ellipsoid. Zeitschrift f
Vermessungswesen 131:3539 which may be of more than academic interest.
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