The U.S. Department of Transportation (DOT) has unveiled its Complementary Positioning Navigation and Timing (CPNT) Action Plan, which contains steps the department is taking to drive CPNT adoption across the United States transportation system and within other critical infrastructure areas. This plan was mentioned by Robert Hampshire — Deputy Assistant Secretary for Research and Technology and Chief Science Officer, U.S. DOT — during his keynote address at the annual Civil GPS Service Interface Committee (CGSIC) meeting on September 12, at ION GNSS+, which GPS World’s Editor-in-Chief, Matteo Luccio, is attending…

The U.S. DOT have selected 11 candidate technologies to demonstrate positioning or timing functions:
-Two vendors demonstrated low-Earth orbit satellite PNT technologies — one L-band and one S-band;
-two vendors demonstrated fiber-optic timing systems, both based on the White Rabbit Precision Time Protocol;
-one vendor demonstrated localized database map matching database, inertial measurement unit, and ultra-wideband technologies; and,
-six vendors demonstrated terrestrial radio frequency PNT technologies across low frequency, medium frequency, ultra-high frequency, and Wi-Fi/802.11 spectrum bands.