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Dear proj.4 users,
<p>I am trying to describe the projection of raw images of the Meteosat
geostationary satellite using the proj.4 system.
<p>I am using the "proj=nsper" for this, but this not work. This projection
returns distances X and Y in a tangent plane on the earth, but the
satellite's raw image represent data as a function of the viewing angles
(in horizontal and vertical direction) of the satellite. Close to the equator
the angles and distances depend linearly on each other, but towards the
poles and away from the Greenwich meridian the deviations are getting big.
<p>Is possible to correctly describe the "satellite viewing angles projection" in
proj.4?
<br>Is it possible to take into account the non-spherical shape of the
earth for this projection?
<p>Thanks in advance for your effort,
<p>Best regards,
<p>Iwan Holleman
<br>--
<br>dr. Iwan Holleman,
<br>Tel. +31-30-2206818, fax. +31-30-2210843,
<br>KNMI, R&D Observations, P.O.box 201, NL-3730 AE De Bilt, The Netherlands,
<br>Homepage <a href="http://www.knmi.nl/~holleman">Internet</a> and <a href="http://info.knmi.nl/~holleman">KNMI
intranet</a>.
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