Geographic Gridding and Mapping of METSAT Imagery

UNCLASSIFIED

Gridding Cont.

•-A grid is an array of points.

•-Grids are used to record regularly spaced samples over an area.

•-When sampling over the surface of the earth a grid is determined by a map projection, a sampling interval, an origin, and the number of rows and columns.

• -A map projection is a one to one mapping of points on the curved surface to points on the plane.

•-Curved surface is the surface of the Earth and the plane is what we call a "map.