United States Department of Transportation
i
Complementary PNT and GPS Backup Technologies Demonstration Report: Sections 1 through 10
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2021-01-15
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[PDF-66.73 MB]
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Abstract:Section 1606 of Public Law 115–91 (also known as the National Defense Authorization Act for Fiscal Year 2018 [FY18 NDAA]), directed the Secretary of Defense, the Secretary of Transportation, and the Secretary of Homeland Security (referred to in this section as the “Secretaries”) to jointly develop a plan for carrying out a backup GPS capability and complementary PNT demonstration. This report provides the details and results of DOT activities covering demonstration planning, the PNT technologies demonstrated, the government reference system used to collect and verify results, and an information framework to convey measures of effectiveness of the demonstrated technologies.
Volpe conducted field demonstrations of candidate PNT technologies that could offer complementary service in the event of GPS disruptions. The Volpe Center, through a competitive acquisition process, selected 11 candidate technologies to demonstrate positioning and/or timing functions in the absence of GPS. The team conducted demonstrations in March 2020 at NASA’s Langley Research Center (Hampton, VA) and Joint Base Cape Cod (Bourne, MA), and they evaluated results to find that the best strategy for achieving resilient PNT service is to pursue multiple technologies to promote diversity in the PNT functions that support transportation and other critical infrastructure sectors in urban, rural, and maritime areas.
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