Manual Do Utilizadoríndice analíticoOM-20000053 Rev 21Table of Contents3Software License10Software Support11Foreword12Congratulations!12Scope12Prerequisites12What’s New In This Manual?121Quick Start131.1 Installation131.2 Data Logging141.3 Differential Operation16Table 1-1GPSCard Pseudorange Differential Initialization Summary171.4 RTK Mode18Table 1-2Latency-Induced Extrapolation Error182Command Descriptions242.1 General242.2 Standard Command Tables26Table 2-1Commands By Function Table26Table 2-2GPSCard Command Summary282.3 WAAS30Figure 2-1The WAAS Concept302.4 Special Data Input Commands313Data Logs353.1 Output Logging353.2 NovAtel Format Data Logs363.3 RTK373.4 NMEA Format Data Logs383.5 GPS Time vs. Local Receiver Time383.6 Standard Log Tables39Table 3-1Logs By Function Table39Table 3-2GPSCard Log Summary423.7 WAAS433.8 Pass-Through Logs43Figure 3-1Pass-Through Log Data444Message Formats46Table 4-1Positioning Modes464.1 RTCA-Format Messages464.2 RTCM-Format Messages484.3 CMR Format Messaging564.4 RINEX Format57AGPS Overview63Figure A-1NAVSTAR Satellite Orbit Arrangement63A.1 GPS System Design63A.2 Height Relationships64Figure A-2Illustration of GPSCard Height Measurements65A.3 GPS Positioning65Figure A-3Accuracy versus Precision66Figure A-4Example of Differential Positioning67Figure A-5Single Point Averaging71Figure A-6Typical Differential Configuration72A.4 Carrier-Phase Algorithms73BMultipath Elimination Technology75B.1 Multipath75Figure B-1Illustration of GPS Signal Multipath75B.2 Hardware Solutions For Multipath Reduction76Figure B-2Illustration of GPS Signal Multipath vs. Increased Antenna Height77Figure B-3Illustration of Quadrifilar vs. Microstrip Patch Antennae78Figure B-4Comparison of Multipath Envelopes80CCommands Summary81Table C-1Antenna LNA Power Configuration83Table C-2Default Values of Process Noise Elements97Figure C-1HELP Command Screen Display104Figure C-2Appended Command Screen Display104Figure C-3Illustration of Magnetic Variation & Correction109Figure C-4Using SEND Command123Figure C-5Illustration of SETNAV Parameters129Figure C-6 Illustration of Undulation132DLogs Summary138Log Descriptions138Table D-1GPSCard Solution Status144Table D-2Position Type145Table D-3RTK Status for Position Type 3 (RT-20)145Table D-4RTK Status for Position Type 4 (RT-2)145Figure D-1Example of Navigation Parameters177Figure D-2The WGS84 ECEF Coordinate System187Table D-5Receiver Self-Test Status Codes198Table D-6Range Record Format (RGED only)201Table D-7Channel Tracking Status203Table D-8Ambiguity Types211Table D-9Searcher Status211Table D-10RTK Status211Table D-11 GPSCard Range Reject Codes215Table D-12 GPSCard Velocity Status223Table D-13Health and Status Bits225Table D-14Data ID Type225Data ID225Type (Service Provider)225Table D-15UTC Standard Identifier230EComparison Of RT-2 And RT-20231E.1 RT-2 & RT-20 Performance231Table E-1Comparison of RT-2 and RT-20231Table E-2RTK Messages Vs. Accuracy231Table E-3RT-2 Performance: Static Mode232Table E-4RT-2 Performance: Kinematic Mode232Table E-5RT-2 Degradation With Respect To Data Delay ¿232Figure E-1Typical RT-2 Horizontal Convergence - Static Mode233Figure E-2Typical RT-2 Horizontal Convergence - Kinematic Mode233Figure E-3RT-2 Accuracy Convergence234Figure E-4Illustration of RT-2 Steady State Performance234Table E-6RT-20 Performance235Figure E-5Typical RT-20 Convergence - Static Mode235Figure E-6Typical RT-20 Convergence - Kinematic Mode236Figure E-7RT-20 Steady State Performance236E.2 Performance Considerations237Figure E-8RT-20 Re-initialization Process238FStandards and References239GGeodetic Datums240Table G-1Reference Ellipsoid Constants240Table G-2Transformation Parameters (Local Geodetic to WGS84)240HSome Common Unit Conversions242H.3Temperature H.4Weight242H.5Hexadecimal And Binary Equivalents242H.6GPS Time of Week to Calendar Day (example)243IInformation Messages244Type 1 Information Messages244Table I-1Type 1 !ERRA Types244Table I-2Type 1 !MSGA Types245Type 2 Information Messages245JListing Of Tables248KGPS Glossary of Terms267LGPS Glossary of Acronyms275Tamanho: 6 MBPáginas: 285Language: EnglishAbrir o manual