Class Name: UPS Location 2D

Superclass - Location 2D

Definition

A coordinate within the Universal Polar Stereographic (PS) 2D Spatial Reference Frame (SRF).

The Universal Polar Stereographic projection-based Spatial Reference Frame is a planar, conformal projection placed tangent to the Object Reference Model/Earth Reference Model (ORM/ERM) at either of the two poles. When secant, intersection with the ORM/ERM occurs along a parallel of latitude; alternatively this can be expressed as a "central scale factor". The locations of the poles are defined by the ORM/ERM.

When used to define a 2D coordinate system, the resulting X and Y axes are measured in meters (rather than arc degrees), with the origin located at the parametrically specified pole. The Y axis lies along (and is positive along) a parametrically defined meridian; the X axis is perpendicular to the Y axis and is oriented to form a 2D right-handed coordinate system.

The UPS SRF extends the PS SRF by specifying the meridian of the positive Y axis, and the central scale factor.

• North polar region: positive Y axis is along the 180 degree meridian
• South polar region: positive Y axis is along the 0 degree meridian

The UPS SRF is only defined to the 79 degree 30 minute parallel, where the effective scale reaches a maximum of 1.0023916.

See the SEDRIS Spatial Reference Model (SRM) for additional details.

Primary Page in DRM Diagram:

• 15

Example

FAQs

How does the Universal Polar Stereographic SRF relate to the Polar Stereographic SRF?

The UPS SRF is a derivation of the PS SRF that specifies the values of two of the PS SRF parameters (scale and meridian) for use by U.S. DoD information systems and maps. The UPS SRF relates to the PS SRF in much the same way that each of the UTM SRFs individually relate to the TM SRF.

Constraints

• Environment Root Spatial Reference Frame
• Locations Under Model

Component of (one-way)(inherited)

• optionally, some Arcs
• optionally, some Base Perimeter Data
• optionally, some Base Reference Vectors
• optionally, some Directional Light Behaviors
• optionally, a Distance Level of Detail Data (notes)
• optionally, some Ellipses
• optionally, some Elliptic Cylinders
• optionally, some Feature Edges
• optionally, a Feature Node
• optionally, some Image Anchors
• optionally, some Labels
• optionally, a Location Table
• optionally, some Morph Points
• optionally, some Point Geometries
• optionally, some Property Grid Hook Points
• optionally, a Reference Origin
• optionally, some Spatial Domains
• optionally, some Spatial Index Related Feature Topologies
• optionally, some Spatial Index Related Features
• optionally, some Spatial Index Related Geometries
• optionally, some Tack Points
• optionally, some Vertices
• optionally, some Vertex with Component Indices
• optionally, some World 3X3s
• optionally, some World Transformations

Field Elements

Notes

Component of Notes

Distance_Level_of_Detail_Data

 the center point for the LOD test

Fields Notes

x

 in meters

y

 in meters along meridian defined by the applicable UPS
 Spatial Reference Frame (SRF) parameters