Novatel OM-20000077 user manual Datum Support

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Chapter 4

Operation

4.7DATUM Support

The receiver has the ability to provide its position in one of the 62 predefined datums. The list of the supported datum and details on Message ID# 88, Select/Define Datum to Use are provided in the L1 GPS Firmware Reference Manual. The receiver can also support two user-defined datums. You must define them, prior to their use, using Message ID# 88. Afterwards, the desired datum, whether it is user-defined or predefined, can be selected using the above message.

34	SUPERSTAR II User Manual Rev 3

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Contents Superstar Proprietary Notice Table of Contents Appendices Tables Figures Software License Software License Firmware Updates Contact InformationElectrostatic Discharge CE Notice Warranty Policy Related Publications Congratulations ScopeRelated Publications Introduction Superstar II GPS CardFlexPak-SSII Introduction ChapterChapter Introduction System Architecture Receiver SpecificationsPhysical Characteristics Radio Frequency RF SectionOptional LNA Power Supply Enclosure and Wiring HarnessPrincipal Power Supply GPS AntennaInstallation Typical System Configuration Reference DescriptionEquipment Interconnection Chapter InstallationElectrostatic Discharge Serial ConnectionInstallation Chapter Installation ConsiderationsPower Connection Antenna LocationData Link Connectors and Connector Pins Assignment1 J1 Interface and Power Connector Base Station and Rover Units SeparationRF Connector J2 Serial Data InterfaceMemory Back-Up Preamplifier Power Pass-Through Antenna SupplyProtocol Selection and Non Volatile Memory RF InputUse of Discretes Discretes IP2 and IP3 functionsNon Volatile Memory Default ConfigurationNon-Volatile Memory Data Installation Overview Description ReferenceTypical Operational Configuration Reference Description OperationGetting Started Serial Port Default SettingsCommunications with the Receiver Operation ChapterOperational Information Power-Up InformationBoot Information Chapter OperationData Requests Configurable ParametersReceiver States Self-Test Mode Dead-Reckoning Mode Built-In Status TestsDatum Support RTCM-Format Messages Message FormatsRTCM1 Differential GPS Corrections Fixed RTCM9 Partial Satellite Set Differential Corrections RTCM2 Delta Differential GPS Corrections FixedChapter Message Formats Nmea Format Data Messages Message Formats ChapterPositioning Modes of Operation GPS System ErrorsSingle-Point or Autonomous Satellite-Based Augmentation System Sbas Positioning Modes of Operation ChapterSbas Messages Sbas ReceiverChapter Positioning Modes of Operation Positioning Modes of Operation Chapter Troubleshooting Cable Lengths Vs. GainTroubleshooting Chapter Appendix a Technical SpecificationsSuperstar II Family Performance Technical Specifications Appendix a Output MessagesAppendix a Technical Specifications Mechanical DrawingConnector Pin Assignment J1 Interfaces and Power Connector Pin Assignment3 I/O Electrical Characteristics O Signals Voltage LimitsFlexPak-SSII Specifications Appendix BFlexPak Status Indicators Status IndicatorsAppendix B FlexPak-SSII Specifications Port Pin-OutsAutomobile Power Adapter Cable NovAtel part number FlexPak-SSII Specifications Appendix BCables 3.2 13-Pin Deutsch to DB9 Serial Cable NovAtel part number FlexPak 13-Pin Serial CableDevelopment Kit Setup and OperationNormal Setup DescriptionDgps Setup with the FlexPak-SSII Differential GPS SetupStarView Software Installation Appendix C Antenna SpecificationsCoaxial Cable Specifications Cable SelectionAntenna Gain Depending on Cable Length Required Antenna Specifications Appendix CGeodetic Active Antenna Typical Current Consumption Versus Antenna GainPassive Antenna Appendix C Antenna SpecificationsActive Antenna Recommended Geodetic Active AntennasPassive Antenna Specifications Patch Element GPS Antenna 201-990146-716 MCX, +12 dBGPS Antenna 201-990147-606 +26 dB Antenna Specifications Appendix C Appendix D Standards/ReferencesTime-To-First-Fix Ttff Appendix ETtff and Satellite Acquisition Re-AcquisitionUpdating Receiver Firmware Utility InstallationAppendix F System RequirementsRegistration Key Accepted Starting Software and Options UpdateUpdating Receiver Firmware Appendix F Programming Success Appendix F Updating Receiver FirmwareGPS System Design Appendix GGPS Overview Space SegmentUser Segment Height RelationshipsControl Segment Appendix G GPS OverviewGPS Positioning GPS Overview Appendix GSingle-Point vs. Relative Positioning Accuracy versus Precision1Static vs. Kinematic Positioning MultipathReal-time vs. Post-mission Data Processing Why Does Multipath Occur? Consequences of Multipath ReceptionHardware Solutions For Multipath Reduction Antenna Site SelectionGPS Signal Multipath vs. Increased Antenna Height Antenna DesignsGPS Overview Appendix G Appendix H Glossary of TermsGlossary of Terms Appendix H Appendix H Glossary of Terms Glossary of Terms Appendix H Appendix AcronymsAcronyms Appendix Appendix Acronyms Index GEO, Sbas IndexIndex Index OM-20000077 Rev 2004/03/11