Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Towards GNSS-less Navigation: Exploiting Terrestrial and LEO Satellite Signals of Opportunity https://rip.trb.org/View/2321512 Thu, 11 Jan 2024 16:07:04 GMT https://rip.trb.org/View/2321512 Exploring Cellular-Based Private Wireless Networks for the U.S. Aviation Industry https://rip.trb.org/View/2007988 Tue, 16 Aug 2022 17:13:52 GMT https://rip.trb.org/View/2007988