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https://www.ion.org/publications/abstract.cfm?articleID=919
Space-Borne GPS Receivers for Remote Sensing of the Ionosphere and the Troposphere
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Learn about the Geospatial Industry and equipment.
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https://www.ion.org/publications/abstract.cfm?articleID=8852
An In-Line Anti-Spoofing Device for Legacy Civil GPS Receivers
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