Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. 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) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ IMPROVED SATELLITE CONSTELLATIONS FOR CONUS ATC COVERAGE Improved Satellite Constellations for CONUS ATC Coverage https://trid.trb.org/View/20456 Thu, 19 Dec 1974 00:00:00 GMT https://trid.trb.org/View/20456 CONCEPT FOR A SATELLITE-BASED ADVANCED AIR TRAFFIC MANAGEMENT SYSTEM. VOLUME I. SUMMARY https://trid.trb.org/View/17654 Tue, 12 Nov 1974 00:00:00 GMT https://trid.trb.org/View/17654 OCEANIC SURVEILLANCE AND NAVIGATION ANALYSIS, FY 72 https://trid.trb.org/View/9040 Tue, 31 Jul 1973 00:00:00 GMT https://trid.trb.org/View/9040