UPS Grid System (Especially for GATE-Geospatial 2022)

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UPS stands for Universal Polar Stereographic (UPS) . The UPS coordinates system is used in conjunction with the UTM coordinate system to locate positions on the surface of the earth.

The UPS is defined above 84 degrees north latitude and south of 80 degrees south latitude. The easting and northings are computed using a polar aspect stereographic projection. Zones are computed using a different character set for south and north Polar regions.

This system divides the Polar Regions into concentric zones, and then splits them into two equal halves east to west at longitude 0 to 180 degree.

In the northern hemisphere the west half is designated as Y and the east half grid zone Z.

In the southern hemisphere the west half is designated zone A and the east half zone B.

This Figure Shows Northern and Southern Hemisphere

UPS coordinates are based on a family of two Polar Stereographic map projections, one for each pole.

This Diagram Shows Two Polar Stereographic Map Projection

  • The origin of the UP coordinate system is the pole (north to south) , where and .
  • The X-axis lies along the meridian and .
  • Moving from the pole (north to south) , X-values (Easting՚s) increase the meridian.
  • The Y-axis lies along the meridians and .
  • Moving from the North Pole, Y-values (Northing՚s) increase along the meridian.
  • Moving from the South Pole, Y-values (Northing՚s) increase along the meridian.

Example

North Polar Area UPS

WGS-84 Latitude, Longitude

Universal Polar Stereographic: ZGG7902863771

South Polar Area UPS

WGS-84 Latitude, Longitude

Universal Polar Stereographic: ATN2097136228

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