PROBLEM TO BE SOLVED: To provide a position estimation system which suppresses a reduction in accuracy of a position to be estimated.SOLUTION: A position estimation system 1 comprises a first radio communication device 100 used in a mobile body 10, and a second radio communication device 200 performing radio communication with the first radio communication device. The second radio communication device comprises: an LF transmission unit which transmits a signal in an LF band by radio; a correction information generation unit which generates position correction information for correcting an estimation position obtained by estimating a position of the first radio communication device to a corrected position determined on the basis of a position of the second radio communication device; and a correction information transmission unit which causes the LF transmission unit to transmit the position correction information. The first radio communication device comprises: a position estimation unit which finds an estimation position; a correction information reception unit which receives the position correction information transmitted by the correction information transmission unit; and a position correction unit which, when it can be determined that an error of the corrected position is less than an error of the estimation position, corrects the estimation position to the corrected position on the basis of the position correction information received by the correction information reception unit.SELECTED DRAWING: Figure 1

    【課題】推定する位置の精度が低下することを抑制する位置推定システムを提供する。【解決手段】移動体10で用いられる第1無線通信装置100と、第1無線通信装置と無線通信する第2無線通信装置200とを備える位置推定システム1であって、第2無線通信装置は、LF帯で信号を無線送信するLF送信部と、第1無線通信装置の位置を推定した推定位置を、第2無線通信装置の位置に基づいて決定される補正後位置に補正するための位置補正情報を生成する補正情報生成部と、LF送信部に位置補正情報を送信させる補正情報送信部とを備え、第1無線通信装置は、推定位置を求める位置推定部と、補正情報送信部が送信する位置補正情報を受信する補正情報受信部と、補正後位置の誤差が推定位置の誤差よりも小さいと判断できる場合に、補正情報受信部が受信した位置補正情報に基づいて推定位置を補正後位置に補正する位置補正部とを備える。【選択図】図1


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    Title :

    POSITION ESTIMATION SYSTEM, POSITION CORRECTION DEVICE, AND POSITION ESTIMATION DEVICE


    Additional title:

    位置推定システム、位置補正装置、および位置推定装置


    Contributors:

    Publication date :

    2018-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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