GPS 接口标准（IS-GPS-200 Revision D）免费

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<P>NAVSTAR GLOBAL POSITIONING SYSTEM INTERFACE SPECIFICATION
IS-GPS-200
Revision D
7 December 2004
Navstar GPS Space Segment/Navigation User Interfaces
REVISION RECORD
LTR DESCRIPTION DATE APPROVED
NC Initial Release 25 Jan 1983
A Incorporates IRN-200NC-001, IRN-200NC-002, and IRN-
200NC-003
25 Sep 1984
B Incorporates IRN-200A-001A 30 Nov 1987
C Incorporates IRN-200B-001 thru IRN-200B-007 10 Oct 1993
C Re-formatted in Microsoft Word 6.0 in GEMS compatible
format
10 Oct 1993 12 Jan 1996
C Changed distribution status to Public Release 25 Sep 1997 20 Oct 1997
D 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
TABLE OF CONTENTS
1. SCOPE....................................................................................................................................................................1
1.1 Scope ..............................................................................................................................................................1
1.2 IS Approval and Changes...............................................................................................................................1
2. APPLICABLE DOCUMENTS.............................................................................................................................2
2.1 Government Documents .................................................................................................................................3
2.2 Non-Government Documents.........................................................................................................................3
3. REQUIREMENTS ................................................................................................................................................4
3.1 Interface Definition ........................................................................................................................................5
3.2 Interface Identification ...................................................................................................................................5
3.2.1 Ranging Codes .....................................................................................................................................5
3.2.1.1 P-Code........................................................................................................................................6
3.2.1.2 Y-Code .......................................................................................................................................6
3.2.1.3 C/A-Code ...................................................................................................................................6
3.2.1.4 L2 CM-Code (IIR-M, IIF, and subsequent blocks) .....................................................................6
3.2.1.5 L2 CL-Code (IIR-M, IIF, and subsequent blocks) ......................................................................6
3.2.1.6 Non-Standard Codes .................................................................................................................11
3.2.2 NAV Data...........................................................................................................................................11
3.2.3 L1/L2 Signal Structure ........................................................................................................................12
3.3 Interface Criteria...........................................................................................................................................14
3.3.1 Composite Signal ...............................................................................................................................14
3.3.1.1 Frequency Plan..........................................................................................................................14
3.3.1.2 Correlation Loss ........................................................................................................................14
3.3.1.3 Carrier Phase Noise...................................................................................................................14
3.3.1.4 Spurious Transmissions.............................................................................................................14
3.3.1.5 Phase Quadrature......................................................................................................................15
3.3.1.6 User-Received Signal Levels ....................................................................................................15
3.3.1.7 Equipment Group Delay............................................................................................................17
3.3.1.7.1 Group Delay Uncertainty ................................................................................................17
3.3.1.7.2 Group Delay Differential ................................................................................................17
3.3.1.8 Signal Coherence......................................................................................................................17
3.3.1.9 Signal Polarization ....................................................................................................................17
3.3.2 PRN Code Characteristics ...................................................................................................................18
3.3.2.1 Code Structure..........................................................................................................................18
3.3.2.2 P-Code Generation ....................................................................................................................20
3.3.2.3 C/A-Code Generation................................................................................................................30
3.3.2.4 L2 CM-/L2 CL-Code Generation..............................................................................................35
3.3.3 Navigation Data..................................................................................................................................38
3.3.3.1 Navigation Data Modulation (L2 CM)......................................................................................38
3.3.3.1.1 Forward Error Correction................................................................................................38
3.3.4 GPS Time and SV Z-Count.................................................................................................................40
4. NOT APPLICABLE............................................................................................................................................43
5. NOT APPLICABLE............................................................................................................................................45
6. NOTES..................................................................................................................................................................47
6.1 Acronyms .....................................................................................................................................................47
6.2 Definitions ....................................................................................................................................................51
6.2.1 User Range Accuracy.........................................................................................................................51
6.2.2 SV Block Definitions ..........................................................................................................................51
6.2.2.1 Developmental SVs...................................................................................................................51
6.2.2.2 Operational SVs ........................................................................................................................51
6.2.2.2.1 Block II SVs....................................................................................................................51
6.2.2.2.2 Block IIA SVs.................................................................................................................51
6.2.2.2.3 Block IIR SVs .................................................................................................................52
6.2.2.2.4 Block IIR-M SVs ............................................................................................................52
6.2.2.2.5 Block IIF SVs..................................................................................................................52
6.2.3 Operational Interval Definitions..........................................................................................................52
6.2.3.1 Normal Operations ....................................................................................................................52
6.2.3.2 Short-term Extended Operations ...............................................................................................52
6.2.3.3 Long-term Extended Operations ...............................................................................................52
6.2.4 GPS Week Number .............................................................................................................................53
6.2.5 L5 Civil Signal ...................................................................................................................................53
6.3 Supporting Material......................................................................................................................................53
6.3.1 Received Signals ................................................................................................................................53
6.3.2 Extended Navigation Mode (Block II/IIA)..........................................................................................55
6.3.3 Block IIA Mode (Block IIR/IIR-M)....................................................................................................56
6.3.4 Autonomous Navigation Mode ...........................................................................................................56
10. APPENDIX I. LETTERS OF EXCEPTION...................................................................................................57
10.1 Scope ..........................................................................................................................................................57
10.2 Applicable Documents ...............................................................................................................................57
30.2 Applicable Documents. .............................................................................................................................137
30.2.1 Government Documents..................................................................................................................137
30.2.2 Non-Government Documents..........................................................................................................137
30.3 Requirements............................................................................................................................................138
30.3.1 Data Characteristics........................................................................................................................139
30.3.2 Message Structure ...........................................................................................................................139
30.3.3 Message Content .............................................................................................................................139
30.3.3.1 Message Type 10 and 11 Ephemeris and Health Parameters ...............................................155
30.3.3.1.1 Message Type 10 and 11 Ephemeris and Health Parameter Content .........................155
30.3.3.1.2 Message Type 10 and 11 Ephemeris Parameter Characteristics .................................158
30.3.3.1.3 User Algorithm for Determination of SV Position......................................................158
30.3.3.2 Message Types 30 Through 37 SV Clock Correction Parameters. .......................................163
30.3.3.2.1 Message Type 30 Through 37 SV Clock Correction Parameter Content....................163
30.3.3.2.2 Clock Parameter Characteristics .................................................................................163
30.3.3.2.3 User Algorithms for SV Clock Correction Data .........................................................163
30.3.3.2.4 SV Clock Accuracy Estimates ....................................................................................165
30.3.3.3 Message Type 30 Ionospheric and Group Delay Correction Parameters ..............................168
30.3.3.3.1 Message Type 30 Ionospheric and Group Delay Correction Parameter Content........168
30.3.3.4 Message Types 31, 12, and 37 Almanac Parameters.............................................................171
30.3.3.4.1 Almanac Reference Week...........................................................................................171
30.3.3.4.2 Almanac Reference Time............................................................................................171
30.3.3.4.3 SV PRN Number.........................................................................................................171
30.3.3.4.4 Signal Health (L1/L2/L5)............................................................................................171
30.3.3.4.5 Midi Almanac Parameter Content...............................................................................172
30.3.3.4.6 Reduced Almanac Parameter Content.........................................................................172
30.3.3.5 Message Type 32 Earth Orientation Parameters (EOP) ........................................................175
30.3.3.5.1 EOP Content ...............................................................................................................175
30.3.3.6 Message Type 33 Coordinated Universal Time (UTC) Parameters ......................................179
30.3.3.6.1 UTC Parameter Content..............................................................................................179
30.3.3.6.2 UTC and GPS Time ....................................................................................................179
30.3.3.7 Message Types 34, 13, and 14 Differential Correction Parameters ......................................181
30.3.3.7.1 Differential Correction Parameters Content................................................................181
30.3.3.7.3 Application of Clock-Related DC Data.......................................................................184
30.3.3.7.4 Application of Orbit-Related DC Data........................................................................184
30.3.3.7.5 SV Differential Range Accuracy Estimates ................................................................186
IS-GPS-200D
7 Dec 2004
xi
30.3.3.8 Message Type 35 GPS/GNSS Time Offset...........................................................................187
30.3.3.8.1 GPS/GNSS Time Offset Parameter Content ...............................................................187
30.3.3.8.2 GPS and GNSS Time ..................................................................................................187
30.3.3.9 Message Types 36 and 15 Text Messages.............................................................................188
30.3.4 Timing Relationships ......................................................................................................................189
30.3.4.1 Paging and Cutovers..............................................................................................................189
30.3.4.2 SV Time vs. GPS Time .........................................................................................................190
30.3.4.3 Speed of Light .......................................................................................................................190
30.3.5 Data Frame Parity...........................................................................................................................191
30.3.5.1 Parity Algorithm....................................................................................................................191

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