Centre county Pennsylvania, USA |
Link below is to RITA's current justification for National Differential GPS (NDGPS); aka, beacon. Funding problem seems to be that "there are no current validated transportation systems requirements for NDGPS. The majority of current NDGPS users appear to be primarily in the resources management community (e.g., agriculture, surveying, forestry)." Current justification is "The U.S. Space-Based PNT Policy states that the U.S. must continue to improve and maintain GPS, GPS augmentation, and back-up PNT capabilities to meet constantly increasing national, homeland, and economic security requirements, as well as operational missions of the broader civil, commercial, and scientific communities."
http://www.rita.dot.gov/publications/budget_estimates/fy2008/html/s... |
Ez-guidie 500
