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REVISION RECORD LTR DESCRIPTION DATE APPROVED NC Initial Release August 13, 2010 A Update data formats for OCX (RFC- June 23, 2011 00041). Add IA requirements (data integrity) for this interface (RFC-00045) iii ICD-GPS-870 13 Aug 201023 June 2011
TABLE OF CONTENTS 1 SCOPE..................................................................................................................................... 1 1.1 SCOPE ................................................................................................................................. 1 1.2 KEY EVENTS ....................................................................................................................... 1 1.3 INTERFACE CONTROL DOCUMENT APPROVAL AND CHANGES ............................................ 1 2 APPLICABLE DOCUMENTS ............................................................................................. 3 2.1 GOVERNMENT DOCUMENTS ............................................................................................... 3 2.2 NON-GOVERNMENT DOCUMENTS....................................................................................... 4 3 REQUIREMENTS ................................................................................................................. 5 3.1 INTERFACE IDENTIFICATION ............................................................................................... 5 3.1.1 Next Generation GPS Operational Control Segment (OCX) ..................................... 6 3.1.2 GPS user and user-support communities .................................................................... 7 3.2 INTERFACE DEFINITIONS .................................................................................................... 7 3.2.1 Generation of Almanac Data ...................................................................................... 7 3.2.2 Generation of Operational Advisory Data .................................................................. 7 3.2.3 Generation of NANU Data ......................................................................................... 8 3.2.4 Generation of Anti-Spoofing Status............................................................................ 8 3.2.5 Data Distribution ......................................................................................................... 8 3.2.6 GPS MCS to Civil GPS Users Interface (USCG/FAA).............................................. 8 3.2.7 GPS MCS to Military GPS Users Interface ................................................................ 8 3.2.8 GPS MCS to the United States Notice to Airman Office Interface ............................ 9 3.3 GPS MCS TO GPS USER SUPPORT COMMUNITY INFORMATION ASSURANCE REQUIREMENTS ............................................................................................................................ 9 4 QUALITY ASSURANCE ...................................................................................................... 9 5 PREPARATION FOR DELIVERY ..................................................................................... 9 6 NOTES .................................................................................................................................. 10 6.1 ACRONYMS AND ABBREVIATIONS .................................................................................... 10 7 APPROVAL .......................................................................................................................... 13 8 VERIFICATION CROSS REFERENCE MATRIX ........................................................ 14 8.1 VERIFICATION METHODS .................................................................................................. 14 10 APPENDIX 1: NANU DATA FORMATS .................................................................... 7-1 10.1 NOTICE ADVISORY TO NAVSTAR USERS ...................................................................... 7-1 10.1.1 Scheduled Outages ................................................................................................... 7-1 10.1.2 Unscheduled Outages............................................................................................... 7-6 10.1.3 General NANU Messages ........................................................................................ 7-8 10.1.4 Other Messages ........................................................................................................ 7-9 10.2 NANU NOTIFICATION TIMES ..................................................................................... 7-13 10.3 NANU MESSAGE FORMAT......................................................................................... 7-14 10.3.1 NANU Header ....................................................................................................... 7-14 iv ICD-GPS-870 13 Aug 201023 June 2011
Page 1 and 2: Unclassified This page is unclassif
Page 3: (This page intentionally left blank
Page 7 and 8: TABLE OF FIGURES Figure 1 GPS OCX t
Page 9 and 10: 1 SCOPE 1.1 Scope This Interface Co
Page 11 and 12: 2 APPLICABLE DOCUMENTS 2.1 Governme
Page 13 and 14: 3 REQUIREMENTS 3.1 Interface Identi
Page 15 and 16: interface function. The term “MCS
Page 17 and 18: The GPS OCX uploads the NANU, Opera
Page 19 and 20: ICC ICD ICWG ID IP IS JDAY LEAPSEC
Page 21 and 22: 7 APPROVAL The signatories have app
Page 23 and 24: Section # Requirement Title Verific
Page 25 and 26: NANU ACRONYM FCSTUUFN NAME Forecast
Page 27 and 28: NOTICE ADVISORY TO NAVSTAR USERS (N
Page 37 and 38: 10.410.3 NANU Message Format The NA
Page 39 and 40: 10.4.2.110.3.2.1 NANU Message Descr
Page 41 and 42: 10.4.2.310.3.2.3 Satellite Identifi
Page 43 and 44: 10.4.310.3.3 NANU Section Two2 As s
Page 45 and 46: Figure 20-1 Sample Operational Advi
Page 47 and 48: Figure 20-3 OA Section One1 20.4 OA
Page 49 and 50: 20-6 ICD-GPS-870 23 June 201113 Aug
Page 51 and 52: SV Health Category Six Bit SV Healt
Page 53 and 54: CURRENT.AL3 032 Figure 30-1 SEM Dat
Page 55 and 56:
Line No b c R-5 d e Table 30-IIIIIT
Page 57 and 58:
******** Week 175 almanac for PRN-0
Page 59 and 60:
Table 40-II identifies the characte
Page 61 and 62:
60 APPENDIX 46: LETTERS OF EXCEPTIO
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