Complementary PNT and GPS Backup Technologies Demonstration Report Sections 1 through 10

Resilience against Positioning, Navigation, and Timing (PNT) service disruption or manipulation is an important safety and economic concern for critical infrastructure owners, operators, and users. This demonstration was designed to identify the set of PNT technologies that increase resilience of critical infrastructure through candidate acquisition of provided services. The purpose of the demonstration was to gather information on PNT technologies at a high Technology Readiness Level (TRL) that can work in the absence of Global Positioning System (GPS). The Volpe Center, through a competitive acquisition process, selected 11 candidate technologies to demonstrate positioning and timing functions in the absence of GPS at two demonstration sites. Two vendors demonstrated Low Earth Orbit satellite PNT technologies, one L-band, one S-band. Two vendors demonstrated fiber-optic timing systems, both based on the White Rabbit Precision Time Protocol (PTP) technology. One vendor demonstrated localized database map matching database, Inertial Measurement Unit (IMU), and ultra-wideband (UWB) technologies. Six vendors demonstrated terrestrial radio frequency (RF) PNT technologies across, Low-Frequency (LF), Medium-Frequency (MF), Ultra-High Frequency (UHF), and WiFi/802.11 spectrum bands. Five of the technologies were demonstrated at Joint Base Cape Cod (JBCC) and six were demonstrated at NASA Langley Research Center. This demonstration was a scenario-based implementation consisting of a series of scenarios modeled on critical infrastructure use cases under various operating conditions.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps; Photos; References; Tables;
  • Pagination: 457p

Subject/Index Terms

Filing Info

  • Accession Number: 01763110
  • Record Type: Publication
  • Report/Paper Numbers: DOT-VNTSC-20-07
  • Contract Numbers: VHB2B119, OS91A119, VHU1A119, OS92A319, OS92A219
  • Files: TRIS, ATRI, USDOT
  • Created Date: Jan 22 2021 2:15PM