PROBLEM TO BE SOLVED: To enable positioning without dependence on an individual difference among mobile communication devices.SOLUTION: A reference station 2 receives vehicle-velocity-pulse integrated value information from each on-vehicle device 3 directly by wireless communication and detects a received signal intensity at a time of this reception. A management server 4 stores reference locus information indicating a reference locus on which two or more points of correspondence relations are set between the received signal intensity and a distance (hereinafter referred to as reference moving distance) by which a vehicle travels on a road near the reference station 2. The management server 4 creates a probe locus indicating correspondence relations between a plurality of received signal intensities and a plurality of target vehicle moving distances calculated on the basis of the vehicle-velocity-pulse integrated value information, and compares the reference locus with the probe locus, thereby determining a correspondence relation between a reference moving distance and each target vehicle moving distance. Furthermore, the management server 4 determines a current position of each on-vehicle device 3 on the basis of the correspondence relation between the reference moving distance and the target vehicle moving distance and the current received signal intensity, and the reference station 2 transmits positioning information indicating the current position to each on-vehicle device 3.

    【課題】移動体通信装置の個体差に依存しない測位を可能とする【解決手段】基準局2は、車速パルス積算値情報を車載装置3から直接無線通信により受信し、このときの受信信号強度を検出する。また管理サーバ4は、受信信号強度と、基準局2付近の道路上を走行した距離(以下、基準移動距離という)との対応関係が2点以上設定された基準軌跡を示す基準軌跡情報を記憶する。管理サーバ4は、複数の受信信号強度と、車速パルス積算値情報に基づいて算出された複数の対象車両移動距離との対応関係を示すプローブ軌跡を作成し、基準軌跡とプローブ軌跡とを比較することにより、基準移動距離と対象車両移動距離との対応関係を決定する。さらに管理サーバ4は、基準移動距離と対象車両移動距離との対応関係と現在の受信信号強度とに基づいて、車載装置3の現在位置を決定し、基準局2は、現在位置を示す測位情報を車載装置3へ送信する。【選択図】図1


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    Titel :

    WIRELESS COMMUNICATION DEVICE AND WIRELESS POSITIONING SYSTEM


    Weitere Titelangaben:

    無線通信装置および無線測位システム


    Beteiligte:
    KAWAI SHIGEKI (Autor:in) / NAKADA TSUNEO (Autor:in)

    Erscheinungsdatum :

    18.01.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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