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Clocks are Foundational – Cross Cutting Technology Investments for Navigation and Science

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Clocks are Foundational – Cross Cutting Technology Investments for Navigation and Science

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  • Author: Todd A. Ely, Eric Burt, Joseph Lazio, Robert Tjoelker
Emerging capabilities for space-based atomic clocks for space navigation and potential science, including fundamental physical science, are discussed. Navigation and science represent complimentary uses for space atomic clocks, and the case is made that continued investment in improving space clock capabilities will benefit both uses. Atomic clocks form the backbone of the tracking networks we use to navigate whether here on Earth or in space. Terrestrial or Earth orbiting navigation often employs Global Navigation Satellite Systems (GNSS) that utilize rubidium, cesium, or passive hydrogen masers to provide precision one-way range and phase measurements.

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