1United States Code: 10 U,S.C 2281: Global Positioning System, http://uscode, house, gov/ view, xhtml?req=granuleid:USC-prelim-title10- section2281&num=O&edition=prelim, 2015.
2United States Code: 51 U.S.C. 50112: Promotion of U.S. GPS Standards, http://uscode, house, gov/ view. xhtml?req=granuleid:USC-prelim-title51-sect ion50112&num=O&edition=prelim, 2015.
3United States Code: 49 U.S.C. 30: Establishment of Nationwide Differential Global Positioning System, http://uscode, house, gov/view. xhtml?req=granuleid:USC-prelim-title49-section3 01&num=O&edition=prelim, 2015.
4Karen V D. National position navigation and timing architecture[C]//APEC GNSS Innovation Summit, May 26, 2008.
5Karen V D. GNSS innovations and implementations in aviation[R]. Federal Aviation Administration, 2008.
6INTERAGENCY MEMORANDUM OF AGREEMENT WITH RESPECT TO SUPPORT TO USERS OF THE NAVSTAR GLOBAL POSITIONING SYSTEM (GPS), http://www, gps. gov./policy/docs/2014/user-support-MOAL 2014.
8Federal Communications Commission, NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION PROVIDES INFORMATION CONCERNING EXECUTIVE BRANCH RECOMMENDATIONS FOR WAIVER OF PART 25 RULES CONCERNING LICENSING OF RECEIVE- ONLY EARTH STATIONS OPERATING WITH NON-U.S. RADIONAVlGATION SATELLITES, March 15, 2011.
9National Positioning, Navigation, and Timing Resilience and Security Act of 2015, http://www. gps. gov./policy/legislation/Ioran-cZ.
10David A. Turner ,GPS Civil Service Update & U.S. International GNSS Activities Pacific PNT 2015 Honolulu, Hawaii, April 21, 2015.
