PROBLEM TO BE SOLVED: To improve the accuracy of direction estimation while reducing a processing load when the direction of an object transmitting a radio wave is estimated.SOLUTION: A direction estimation device 2 comprises: a position limiting unit 263 that narrows down a rough position of a mobile terminal relative to the direction estimation device 2 by using a terminal position transmitted by the mobile terminal by radio; and a scanning unit 264 that controls the reception beam direction of an array antenna 21 to perform beam scanning. If the position limiting unit 263 has narrowed down the rough position of the mobile terminal, the scanning unit 264 limits an angular range for beam scanning to a second angular range including the position of the mobile terminal narrowed down by the position limiting unit 263 narrower than a first angular range.SELECTED DRAWING: Figure 3

    【課題】電波を送信する対象物の方向推定を行う際の処理負荷を軽減しながらも、方向推定の精度を向上させる。【解決手段】方向推定装置2は、携帯端末から電波にのせて送信された端末位置を用いて、方向推定装置2に対する携帯端末の大まかな位置を絞り込む位置限定部263と、アレーアンテナ21の受信ビーム方向を制御してビーム走査を行う走査部264とを備え、走査部264は、位置限定部263で携帯端末の大まかな位置を絞り込んだ場合には、ビーム走査を行う角度範囲を、第1角度範囲よりも狭い、位置限定部263で絞り込んだ携帯端末の位置が含まれる第2角度範囲に限定する。【選択図】図3


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    Title :

    DIRECTION ESTIMATION SYSTEM AND DIRECTION ESTIMATION DEVICE


    Additional title:

    方向推定システム及び方向推定装置


    Contributors:

    Publication date :

    2016-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS




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