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    • 8. 发明授权
    • RFID tag assisted GPS receiver system
    • RFID标签辅助GPS接收机系统
    • US08743699B1
    • 2014-06-03
    • US12954490
    • 2010-11-24
    • Keir Finlow-BatesJoonas V. T. ViskariTerry FK Ngo
    • Keir Finlow-BatesJoonas V. T. ViskariTerry FK Ngo
    • H04L12/26
    • G01S19/05G01S1/68G01S19/10
    • A system and method are disclosed for improving the speed of operation and accuracy of GPS receivers. The system comprises a RFID assisted GPS (RAGPS) receiver and geographically dispersed RFID assistance tags. The RAGPS receiver and the RFID assistance tags store location data comprising current location estimate, almanac, and ephemeris data. The location data is time stamped. The RFID assisted GPS (RAGPS) receiver comprises a GPS receiver, a RFID tag reader, a RFID transmitter and a controller. The controller comprises software that transfers the location data to and from the RAGPS receiver and a RFID assistance tag. The method discloses the RAGPS receivers reading up-to-date location data from a nearby RFID assistance tags and similarly if the RAGPS receivers have up-to-date location data already, the RAGPS receivers may write that location data to a nearby assistance tags that lacks up-to-date location data.
    • 公开了一种用于提高GPS接收机的操作速度和精度的系统和方法。 该系统包括RFID辅助GPS(RAGPS)接收机和地理上分散的RFID辅助标签。 RAGPS接收机和RFID辅助标签存储包括当前位置估计,历书和星历数据的位置数据。 位置数据是时间戳的。 RFID辅助GPS(RAGPS)接收机包括GPS接收器,RFID标签读取器,RFID发射器和控制器。 控制器包括将位置数据传送到RAGPS接收器和从RAGPS接收器传送位置数据的软件以及RFID辅助标签。 该方法公开了RAGPS接收机从附近的RFID辅助标签读取最新的位置数据,类似地,如果RAGPS接收机已经具有最新的位置数据,则RAGPS接收机可将该位置数据写入附近的辅助标签, 缺少最新的位置数据。