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Using materials of radar mapping from spacecrafts as a way to increase reliability, as well as to reduce the cost and time of site selection for extended linear construction projects
World Journal of Civil Engineering and Architecture
| Vol 3, Issue 1
Table 2. Accuracy of information ondigital elevation models.
| Parameter | SRTM | ASTER GDEM | ALOS AW3D | MERIT DEM |
| Spatial resolution | 1'' х 1'' | 1'' х 1'' | from 1" x 1" (30x30 m) – open source data; up to 0.1" x 0.1" (2.5 x 2.5 m) – commercial version. | 3'' х 3'' |
| Coverage | 60°N 56°S | 83°N 83°S | All the world | 90°N 60°S |
| Elevation accuracy evaluation | 16 m | 20 m | 5 m | 9 m |
| Accuracy evaluation in plan | 20 m | 30 m | 5 m | 12-14 m |