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IS-GPS-200F.pdf
REVISION RECORD
REV
DESCRIPTION
DOCUMENT
APPROVED
NC
Initial Release
DATE
25 Jan 1983
Incorporates IRN-200NC-001, IRN-200NC-002, and IRN-200NC-
003
25 Sep 1984
Incorporates IRN-200A-001A
30 Nov 1987
Incorporates IRN-200B-001 thru IRN-200B-007
10 Oct 1993
Re-formatted in Microsoft Word 6.0 in GEMS compatible format
10 Oct 1993
12 Jan 1996
Changed distribution status to Public Release
25 Sep 1997
20 Oct 1997
Incorporates IRN-200C-001 thru IRN-200C-005R1, change ICD-
GPS-200 to IS-GPS-200, introduce and specify the requirements of
Improved Clock and Ephemeris (ICE) message for L2 C signal, and
other additional updates
7 Dec 2004
23 Nov 2004
Adds additional PRN sequences to Section 6
7 Mar 2006
9 Mar 2006
A
B
C
C
C
D
IRN-
200D-
001
E
GPS IIIA Incorporations
8 Jun 2010
8 June 2010
N/A
SE&I Tech Pubs
E
IRN-IS-200E-001 (RFC 16B - Pseudorandom Noise (PRN)
Expansion
29 July 2010
21 Sep 2011
IRN-IS-200E-002 (RFC 77B - Public Document Management
(GPS III terminology and Space Service Volume (SSV) group
delay))
IRN-IS-200E-003 (RFC 86 - User Range Accuracy (URA)
Definition)
IRN-IS-200E-004 (RFC 89 - Almanac Intervals)
IRN-IS-200E-005
Durations)
(RFC 91A
- Civil Navigation
(CNAV)
IRN-IS-200E-006 (RFC 93 - Technical Note 36)
IRN-IS-200E-007 (RFC 97 - Pseudorange Parameters)
Incorporates IRN-IS-200E-001 through IRN-IS-200E-007
21 Sep 2011
F
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IS-GPS-200F
21 Sep 2011
Table of Contents
1. INTRODUCTION ..................................................................................................................................................... 1
1.1 Scope. .................................................................................................................................................................. 1
1.2 IS Approval and Changes. ................................................................................................................................... 1
2. APPLICABLE DOCUMENTS ................................................................................................................................. 1
2.1 Government Documents. ..................................................................................................................................... 1
2.2 Non-Government Documents. ............................................................................................................................. 2
3. REQUIREMENTS .................................................................................................................................................... 3
3.1 Interface Definition. ............................................................................................................................................. 3
3.2 Interface Identification. ........................................................................................................................................ 3
3.2.1 Ranging Codes. ............................................................................................................................................. 3
3.2.2 NAV Data. .................................................................................................................................................. 12
3.2.3 L1/L2 Signal Structure. .............................................................................................................................. 13
3.3 Interface Criteria. ............................................................................................................................................... 15
3.3.1 Composite Signal. ....................................................................................................................................... 15
3.3.2 PRN Code Characteristics. ......................................................................................................................... 21
3.3.3 Navigation Data. ......................................................................................................................................... 40
3.3.4 GPS Time and SV Z-Count. ....................................................................................................................... 42
4. NOT APPLICABLE ................................................................................................................................................ 44
5. NOT APPLICABLE ................................................................................................................................................ 45
6. NOTES .................................................................................................................................................................... 46
6.1 Acronyms........................................................................................................................................................... 46
6.2 Definitions ......................................................................................................................................................... 50
6.2.1 User Range Accuracy. ................................................................................................................................ 50
6.2.2 SV Block Definitions. ................................................................................................................................. 51
6.2.3 Operational Interval Definitions. ................................................................................................................ 52
6.2.4 GPS Week Number. .................................................................................................................................... 52
6.2.5 L5 Civil Signal. ........................................................................................................................................... 52
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6.3 Supporting Material ........................................................................................................................................... 52
6.3.1 Received Signals. ........................................................................................................................................ 52
6.3.2 Extended Navigation Mode (Block II/IIA). ................................................................................................ 55
6.3.3 Block IIA Mode (Block IIR/IIR-M). .......................................................................................................... 55
6.3.4 Extended Navigation Mode (Block II-F). ................................................................................................... 56
6.3.5 Extended Navigation Mode (GPS III). ....................................................................................................... 56
6.3.6 Autonomous Navigation Mode. .................................................................................................................. 56
6.3.7 Additional PRN Code Sequences. .............................................................................................................. 57
6.3.8 Pre-Operational Use. ................................................................................................................................... 67
6.4 Operational Protocols. ....................................................................................................................................... 67
6.4.1 Lower PRN Numbers Versus Upper PRN Numbers .................................................................................. 67
6.4.2 PRN Number Consistency .......................................................................................................................... 67
6.4.3 PRNs 33 and 37 .......................................................................................................................................... 67
6.4.4 PRNs 33 through 63.................................................................................................................................... 67
6.4.5 Health Code Setting of ‘11110’ .................................................................................................................. 67
10. APPENDIX I. LETTERS OF EXCEPTION ........................................................................................................ 68
10.1 Scope. .............................................................................................................................................................. 68
10.2 Applicable Documents. .................................................................................................................................... 68
10.3 Letters of Exception. ........................................................................................................................................ 68
20. APPENDIX II. GPS NAVIGATION DATA STRUCTURE FOR LNAV DATA, D(t), FOR PRN 1-32 ........... 77
20.1 Scope. .............................................................................................................................................................. 77
20.2 Applicable Documents. .................................................................................................................................... 77
20.2.1 Government Documents. .......................................................................................................................... 77
20.2.2 Non-Government Documents. .................................................................................................................. 77
20.3 Requirements ................................................................................................................................................... 78
20.3.1 Data Characteristics. ................................................................................................................................. 78
20.3.2 Message Structure. .................................................................................................................................... 78
20.3.3 Message Content. ...................................................................................................................................... 89
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20.3.4 Timing Relationships .............................................................................................................................. 131
20.3.5 Data Frame Parity ................................................................................................................................... 136
30. APPENDIX III. GPS NAVIGATION DATA STRUCTURE FOR CNAV DATA, DC(t) ................................. 138
30.1 Scope. ............................................................................................................................................................ 138
30.2 Applicable Documents. .................................................................................................................................. 138
30.2.1 Government Documents. ........................................................................................................................ 138
30.2.2 Non-Government Documents. ................................................................................................................ 138
30.3 Requirements. ................................................................................................................................................ 138
30.3.1 Data Characteristics. ............................................................................................................................... 138
30.3.2 Message Structure. .................................................................................................................................. 139
30.3.3 Message Content. .................................................................................................................................... 139
30.3.4 Timing Relationships. ............................................................................................................................. 188
30.3.5 Data Frame Parity. .................................................................................................................................. 190
40. APPENDIX IV GPS NAVIGATION DATA STRUCTURE FOR LNAV DATA, D(t), FOR PRN 33-63 ........ 192
40.1 Scope. ............................................................................................................................................................ 192
40.2 Applicable Documents. .................................................................................................................................. 192
40.3 Requirements ................................................................................................................................................. 192
40.3.1 Data Characteristics. ............................................................................................................................... 192
40.3.2 Message Structure. .................................................................................................................................. 192
40.3.3 Message Content. .................................................................................................................................... 204
40.3.4 Timing Relationships. ............................................................................................................................. 210
40.3.5 Data Frame Parity. .................................................................................................................................. 210
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List of Figures
Figure 3-1.
Generation of P-, C/A-Codes and Modulating Signals ...................................................................... 22
Figure 3-2.
X1A Shift Register Generator Configuration .................................................................................... 24
Figure 3-3.
X1B Shift Register Generator Configuration .................................................................................... 25
Figure 3-4.
X2A Shift Register Generator Configuration .................................................................................... 26
Figure 3-5.
X2B Shift Register Generator Configuration .................................................................................... 27
Figure 3-6.
P-Code Generation ............................................................................................................................ 29
Figure 3-7.
P-Code Signal Component Timing .................................................................................................... 30
Figure 3-8.
G1 Shift Register Generator Configuration ....................................................................................... 33
Figure 3-9.
G2 Shift Register Generator Configuration ....................................................................................... 34
Figure 3-10. Example C/A-Code Generation ......................................................................................................... 35
Figure 3-11.
C/A-Code Timing Relationships ....................................................................................................... 36
Figure 3-12.
L2 CM-/L2 CL-Code Timing Relationships ..................................................................................... 38
Figure 3-13.
L2 CM/L2 CL Shift Register Generator Configuration ..................................................................... 39
Figure 3-14.
Convolutional Encoder ...................................................................................................................... 41
Figure 3-15.
Convolutional transmit/Decoding Timing Relationships .................................................................. 41
Figure 3-16.
Time Line Relationship of HOW Message ....................................................................................... 43
Figure 6-1.
User Received Minimum Signal Level Variations (Example, Block II/IIA/IIR) .............................. 54
Figure 10.3-1. Letters of Exception. ......................................................................................................................... 69
Figure 10.3-2. Letters of Exception (continued) ...................................................................................................... 70
Figure 10.3-3. Letters of Exception (continued) ...................................................................................................... 71
Figure 10.3-4. Letters of Exception (continued). ..................................................................................................... 72
Figure 10.3-5. Letters of Exception (continued) ...................................................................................................... 73
Figure 10.3-6. Letters of Exception (continued). ..................................................................................................... 74
Figure 10.3-7. Letters of Exception (continued). ...................................................................................................... 75
Figure 10.3-8. Letters of Exception (continued). ..................................................................................................... 76
Figure 20-1. Data Format (sheet 1 of 11) ............................................................................................................... 79
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Figure 20-1. Data Format (sheet 2 of 11) ............................................................................................................... 80
Figure 20-1. Data Format (sheet 3 of 11) ............................................................................................................... 81
Figure 20-1. Data Format (sheet 4 of 11) ............................................................................................................... 82
Figure 20-1. Data Format (sheet 5 of 11) ............................................................................................................... 83
Figure 20-1. Data Format (sheet 6 of 11) ............................................................................................................... 84
Figure 20-1. Data Format (sheet 7 of 11) ............................................................................................................... 85
Figure 20-1. Data Format (sheet 8 of 11) ............................................................................................................... 86
Figure 20-1. Data Format (sheet 9 of 11) ............................................................................................................... 87
Figure 20-1. Data Format (sheet 10 of 11) ............................................................................................................. 88
Figure 20-1. Data Format (sheet 11 of 11) ............................................................................................................. 89
Figure 20-2.
TLM and HOW Formats ................................................................................................................... 91
Figure 20-3.
Sample Application of Correction Parameters ................................................................................ 100
Figure 20-4.
Ionospheric Model (Sheet 1 of 3) .................................................................................................... 128
Figure 20-4. Ionospheric Model (Sheet 2 of 3) ..................................................................................................... 129
Figure 20-4. Ionospheric Model (Sheet 3 of 3) ..................................................................................................... 130
Figure 20-5.
Example Flow Chart for User Implementation of Parity Algorithm ............................................... 137
Figure 30-1. Message Type 10 - Ephemeris 1 ..................................................................................................... 140
Figure 30-2. Message Type 11 - Ephemeris 2 ..................................................................................................... 141
Figure 30-3. Message Type 30 - Clock, IONO & Group Delay ........................................................................... 142
Figure 30-4. Message Type 31 - Clock & Reduced Almanac .............................................................................. 143
Figure 30-5. Message Type 32 - Clock & EOP ................................................................................................... 144
Figure 30-6. Message Type 33 - Clock & UTC ................................................................................................... 145
Figure 30-7. Message Type 34 - Clock & Differential Correction ...................................................................... 146
Figure 30-8. Message Type 35 - Clock & GGTO ................................................................................................ 147
Figure 30-9. Message Type 36 - Clock & Text .................................................................................................... 148
Figure 30-10. Message Type 37 - Clock & Midi Almanac .................................................................................... 149
Figure 30-11. Message Type 12 - Reduced Almanac ............................................................................................ 150
Figure 30-12. Message Type 13 - Clock Differential Correction........................................................................... 151
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Figure 30-13. Message Type 14 - Ephemeris Differential Correction ................................................................... 152
Figure 30-14. Message Type 15 – Text.................................................................................................................. 153
Figure 30-15. Reduced Almanac Packet Content .................................................................................................. 175
Figure 30-16. Differential Correction Data Packet ................................................................................................ 182
Figure 40-1. Data Format (sheet 1 of 11) ............................................................................................................. 193
Figure 40-1. Data Format (sheet 2 of 11) ............................................................................................................. 194
Figure 40-1. Data Format (sheet 3 of 11) ............................................................................................................. 195
Figure 40-1. Data Format (sheet 4 of 11) ............................................................................................................. 196
Figure 40-1. Data Format (sheet 5 of 11) ............................................................................................................. 197
Figure 40-1. Data Format (sheet 6 of 11) ............................................................................................................. 198
Figure 40-1. Data Format (sheet 7 of 11) ............................................................................................................. 199
Figure 40-1. Data Format (sheet 8 of 11) .............................................................................................................. 200
Figure 40-1. Data Format (sheet 9 of 11) .............................................................................................................. 201
Figure 40-1. Data Format (sheet 10 of 11) ............................................................................................................ 202
Figure 40-1. Data Format (sheet 11 of 11) ............................................................................................................. 203
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