Statistics – Computation
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.7503d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Sept. 10, 1983, p. 7503, 7504.
Statistics
Computation
9
Coordinates, Mars Surface, Planetary Mapping, Networks, Photogrammetry, Television Cameras, Viking Lander 1, Mars, Calculations, Procedure, Mariner 9, Viking Pictures, Imagery, Data, Coordinate Systems, Viking 1 Lander, Landing Sites
Scientific paper
Attention is given to a planet-wide control network of Mars that was computed in September 1982 using a large single-block analytical triangulation with 47,524 measurements of 6853 control points on 1054 Mariner 9 and 757 Viking pictures. In all, 19,139 normal equations were solved, with a resulting standard error of measurement of 18.06 microns. The control points identified by name and letter designation are given, as are the aerographic coordinates of the control points. In addition, the coordinates of the Viking I lander site are given: latitude, 22.480 deg; longitude, 47.962 deg (radius, 3389.32 km). This study expands and updates the previously published network (1978). It is noted that the computation differs in many respects from standard aerial mapping photogrammetric practice. In comparison with aerial mapping photography, the television formats are small and the focal lengths are long; stereo coverage is rare, the scale of the pictures varies greatly, and the residual camera distortions are large.
Davies Mike E.
Katayama F. Y.
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