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A platform for research: civil engineering, architecture and urbanism
ONBOARD DEVICE, DISTANCE DETERMINATION METHOD, AND COMPUTER PROGRAM
To provide an onboard device, a distance determination method, and a computer program, capable of detecting relay performed by a repeater.SOLUTION: In an onboard device 10, a shared signal is inputted to each of a plurality of reception antennas Rc1, Rc2, Rc3, Rc4. A microcomputer 23 calculates the position of a transmission source of the shared signal on the basis of the phases of the plurality of shared signals inputted to the plurality of reception antennas Rc1, Rc2, Rc3, Rc4. The microcomputer 23 determines whether the calculated transmission source position and the position indicated by position data contained in the shared signal are less than a prescribed distance.SELECTED DRAWING: Figure 5
【課題】中継機が行っている中継を検知することができる車載装置、距離判定方法及びコンピュータプログラムを提供する。【解決手段】車載装置１０では、複数の受信アンテナＲｃ１，Ｒｃ２，Ｒｃ３，Ｒｃ４夫々に共通の信号が入力される。マイコン２３は、複数の受信アンテナＲｃ１，Ｒｃ２，Ｒｃ３，Ｒｃ４に入力された複数の共通の信号の位相に基づいて、共通の信号の送信元の位置を算出する。マイコン２３は、算出した送信元の位置と、共通の信号に含まれる位置データが示す位置が所定距離未満であるか否かを判定する。【選択図】図５
ONBOARD DEVICE, DISTANCE DETERMINATION METHOD, AND COMPUTER PROGRAM
To provide an onboard device, a distance determination method, and a computer program, capable of detecting relay performed by a repeater.SOLUTION: In an onboard device 10, a shared signal is inputted to each of a plurality of reception antennas Rc1, Rc2, Rc3, Rc4. A microcomputer 23 calculates the position of a transmission source of the shared signal on the basis of the phases of the plurality of shared signals inputted to the plurality of reception antennas Rc1, Rc2, Rc3, Rc4. The microcomputer 23 determines whether the calculated transmission source position and the position indicated by position data contained in the shared signal are less than a prescribed distance.SELECTED DRAWING: Figure 5
【課題】中継機が行っている中継を検知することができる車載装置、距離判定方法及びコンピュータプログラムを提供する。【解決手段】車載装置１０では、複数の受信アンテナＲｃ１，Ｒｃ２，Ｒｃ３，Ｒｃ４夫々に共通の信号が入力される。マイコン２３は、複数の受信アンテナＲｃ１，Ｒｃ２，Ｒｃ３，Ｒｃ４に入力された複数の共通の信号の位相に基づいて、共通の信号の送信元の位置を算出する。マイコン２３は、算出した送信元の位置と、共通の信号に含まれる位置データが示す位置が所定距離未満であるか否かを判定する。【選択図】図５
ONBOARD DEVICE, DISTANCE DETERMINATION METHOD, AND COMPUTER PROGRAM
車載装置、距離判定方法及びコンピュータプログラム
ISHIKAWA SHINICHI (author) / LEE KI-YUNG (author)
2019-11-14
Patent
Electronic Resource
Japanese
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