Status of Space Oblique Mercator (SOM) projection (EC 64 Landsat)
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Abstract
The Space Oblique Mercator projection, a concept that was originated by Colvocoresses in 1974, has been mathematically implemented as the first map projection to provide continuous mapping of satellite imagery true to scale along the groundtrack, and within a few millionths of accurate conformal projection. Specifically designed for Landsat (formerly ERTS) imagery, it is also suitable for other satellites with broader scans. Formulas are given for both sphere and ellipsoid. A unique feature is the need for a curved groundtrack and skewed scan lines on the SOM projection, although they would be straight and parallel, respectively, on a normal oblique cylindrical projection.
Suggested Citation
Colvocoresses, A.P., and Snyder, J.P., 1978, Status of Space Oblique Mercator (SOM) projection (EC 64 Landsat): U.S. Geological Survey Open-File Report 78-682, 13 p., https://doi.org/10.3133/ofr78682.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Status of Space Oblique Mercator (SOM) projection (EC 64 Landsat) |
| Series title | Open-File Report |
| Series number | 78-682 |
| DOI | 10.3133/ofr78682 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 13 p. |
| First page | 585 |
| Last page | 596 |