ICD-GPS-870 - GPS.gov

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SAIC Science Applications International Corporation SE&I Systems Engineering and Integration SEM System Effectiveness Model SIPRNet Secret Internet Protocol Router Network SMC Space and Missile Systems Center SPS Standard Positioning Service SQRT Square Root SUBJ Subject SS System Specification SSS Seconds (3 digits) STD Standard SV Space Vehicle SVID Space Vehicle Identification SVN Space Vehicle Number TBD To Be Determined TCP Transmission Control Protocol UNUNOREF Unusable with no reference UNUSABLE Unusable with reference NANU UNUSUFN Unusable Until Further Notice URA User Range Accuracy USABINIT Initially usable USCG United States Coast Guard USNOF United States Notice to Airmen Office USSPACECOM United States Space Command UTC Coordinated Universal Time VAFB Vandenberg Air Force Base WN Week Number YYYY Year (4 digits) Z Zulu 13 ICD-GPS-870 15 June 2011
7 APPROVAL The signatories have approved this ICD with or without exception as their signature block implies and a copy of each approval sheet is included in this section. 14 ICD-GPS-870 15 June 2011
Page 1: AUTHORITY DESCRIPTION I DATE RFC-00
Page 7 and 8: REVISION RECORD LTR DESCRIPTION DAT
Page 9 and 10: 10.3.2.1 NANU Message Description .
Page 11 and 12: TABLES Table I Information Exchange
Page 13 and 14: 1.2 Key Events The major milestone
Page 15 and 16: MOA February 1996 MOA February 2010
Page 17 and 18: Producer Consumer Data Exchange Ide
Page 19 and 20: Detailed data formats of the OA dat
Page 21 and 22: 3.3.2 GPS CS to GPS User Support Co
Page 23: HTTPS Hypertext Transfer Protocol S
Page 27 and 28: The message templates for the NANU
Page 29 and 30: NOTICE ADVISORY TO NAVSTAR USERS (N
Page 33 and 34: Figure 10-11 General Message Format
Page 37 and 38: The NANU message structure for all
Page 39 and 40: 10.3.2.1 NANU Message Description T
Page 41 and 42: 10.3.3 NANU Section 2 As shown in F
Page 43 and 44: 20.2 OA Header. The header includes
Page 45 and 46: 30 APPENDIX 3: ALMANAC DATA FILES A
Page 47 and 48: SV Health Six Bit SV Health Word Nu
Page 49 and 50: Line No Table 30-II SEM Almanac Des
Page 51 and 52: Line No Table 30-II SEM Almanac Des
Page 53 and 54: ******** Week 175 almanac for PRN-0
Page 55 and 56: Table 40-II ESHS Description Line P
Page 57: 60 APPENDIX 6: LETTERS OF EXCEPTION

ICD-GPS-870 - GPS.gov

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