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GPS Augmentation Services in Japan for the 8th IISC Europe at Prague December 2 - 3, 1999

GPS Augmentation Services in Japan for the 8th IISC Europe at Prague December 2 - 3, 1999. by IISC CPoC in Japan Hiroshi Nishiguchi Japan GPS Council. Current Augmentation Systems in Japan. MSAS :. MTSAT Satellite-based Augmentation System. (under Construction by JCAB). Beacon DGPS :.

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GPS Augmentation Services in Japan for the 8th IISC Europe at Prague December 2 - 3, 1999

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  1. GPS Augmentation Services in Japanfor the 8th IISC Europe at PragueDecember 2 - 3, 1999 by IISC CPoC in Japan Hiroshi Nishiguchi Japan GPS Council

  2. Current Augmentation Systems in Japan MSAS : MTSAT Satellite-based Augmentation System (under Construction by JCAB) Beacon DGPS : Maritime Safety Agency (FOC : April, 99 with 27 Ref. St. ) FM-DGPS : Nation-wide Service by Gpex and Japan FM Network using FM sub-carrier without direct charge (FOC : May, 97 with 7 Ref. St.) RTK-OTH : Marine Constructions, off-shore Remote Constructions, in-land

  3. Status of the Car Navigation Markets Actual shipment results Source : JGPSC • FM-DGPS service has been provided since May,1997. • EIAJ figure + non EIAJ

  4. GNSS Performance • Accuracy • Difference between measured position and true position • Integrity • The ability of system to provide timely warnings to users when the system should not be used for navigation • Continuity • The capability to perform its function without non-scheduled interruptions during the intended operation • Availability • The portion of time during which the system is to be used for navigation • Space reference • World Geodetic Systems, 1984 (WGS-84) • APL(Airport Pseudolite)

  5. Ground Components • Master Control Stations (MCS) • CPF Central Processing Facility • NES Navigation Earth Station • M&C Monitor & Control • Ground Monitor Stations (GMS) • Monitoring & Ranging Stations (MRS) • Network Communication System (NCS)

  6. MCS Master Control Station MRS Monitor and Ranging Station GMS Ground Monitor Station System Architecture GPS Constellation MTSAT Sapporo GMS NTT 64Kbs User Kobe MCS Ibaraki MCS Tokyo GMS Fukuoka GMS KDD 128Kbs Hawaii MRS Australia MRS Naha GMS

  7. SBAS Service Providers • WAAS (USA) • phase 1 operation in 1999 • CWAAS (Canada) • EGNOS (Europe) • planned for 1999 • MSAS (Japan) • phase 1 operation in 2001

  8. Interoperability among SBASs • Receiver/Signal in Space • All SBASs to refer RTCA Do-229 MOPS • Network • Information exchange between SBASs • On-going Discussion in IWG • Interoperability Working Group among SBAS Service Providers

  9. Configuration of GBAS • Ground Segment Architecture • GNSS Receivers • Data Processor • NABS Transmitter • Monitor • Pseudolite (Option)

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