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Global Navigation Satellite Systems

Navigation satellites are essential for transportation, defense, and daily life. The National Academies study system integrity, accuracy, and coordination to enhance global positioning capabilities. 

What's happening

Can we measure water underground from space?

Based on Science

Yes. Using satellites to detect changes in Earth’s gravitational pull can tell us about the movement of water on the planet, including water that is underground. Changes in those measurements over time let us know where groundwater is increasing or decreasing.

May 24, 2022
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Featured Publications

Featured work

Review of FCC Order 20-48 Authorizing Operation of a Terrestrial Radio Network Near the GPS Frequency Bands

Consensus/Advisory Activity

Completed

National Security Space Defense and Protection

Consensus/Advisory Activity

Completed

Units

Aeronautics, Space, and Astronomy Program Area

Oversight Unit

In Progress
Eagle Nebula (M16 - Messier 16) SHO Palette

Earth Systems and Resources Program Area

Oversight Unit

In Progress
Tide area looks like a Earth, Rock fragments like a continent.

Center for Advancing Science and Technology (CAST)

Oversight Unit

In Progress

Climate Crossroads

Oversight Unit

Recently Completed

Space Weather Roundtable

Roundtable/Forum

In Progress
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