Which of the following is NOT a coordinate reference system used for stable control points?

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Multiple Choice

Which of the following is NOT a coordinate reference system used for stable control points?

Stable control points rely on a defined coordinate reference system to locate positions consistently on the Earth. A projected plane system like PPCS, a local geographic framework, and GPS (which provides coordinates within a global geodetic frame) all serve as spatial reference systems. Universal Coordinated Time, however, is a time standard used to synchronize clocks, not to reference spatial positions. Because it does not define where points are in space, UTC is not a coordinate reference system for stable control points.

Stable control points rely on a defined coordinate reference system to locate positions consistently on the Earth. A projected plane system like PPCS, a local geographic framework, and GPS (which provides coordinates within a global geodetic frame) all serve as spatial reference systems. Universal Coordinated Time, however, is a time standard used to synchronize clocks, not to reference spatial positions. Because it does not define where points are in space, UTC is not a coordinate reference system for stable control points.

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