PROBLEM TO BE SOLVED: To solve the problem that, since communication between a mobile communication device and a ground communication device is generally performed by radio transmission, in addition to a main beam (main lobe), a low-level sub beam (side lobe) may be derived just near the main lobe by properties of an antenna, when the mobile communication device passes one ground communication device, a plurality of areas where the mobile communication device and the ground communication device can be communicated with each other may be generated by the side lobe and if such a phenomenon occurs, the mobile communication device may detect the one ground communication device multiple times, thereby disturbing normal mobile control.SOLUTION: In the mobile communication device, until having traveled in a block where influences of the side lobe are expected, information of ground communication is not reported to a mobile control part and after the main lobe is selected in accordance with a reception strength in each reception block, the information is reported to the mobile control part. Thus, the influences of the side lobe are canceled in a digital manner, a position of the ground communication device is calculated with high positional accuracy and simultaneously, a malfunction of detecting the ground communication device multiple times is prevented.
【課題】移動体通信装置と地上通信装置の通信には,一般的に無線伝送にて行うため,アンテナの特性により、主ビーム(メインローブ)以外に、低レベルの副ビーム(サイドローブ)がメインローブの直近に派生する。移動体通信装置が1つの地上通信装置を通過する時,前記サイドローブにより移動体通信装置-地上通信装置間で通信可能となるエリアが複数個発生する場合がある。このような現象が起きると,移動体通信装置は,1つの地上通信装置を複数回検知することとなり,正常な移動体制御の妨げとなる。【解決手段】移動体通信装置において,サイドローブの影響が予想される区間走行するまで,移動体制御部に地上通信この情報を報告せず,各受信区間の受信強度よりメインローブを選択後,移動体制御部に報告することにより,デジタル的にサイドローブの影響の除去を行い,高い位置精度にて地上通信装置の位置算出を行うと同時に,地上通信装置を複数回検知する誤動作を防ぐ。【選択図】図1
MOBILE COMMUNICATION DEVICE
移動体通信装置
16.07.2015
Patent
Elektronische Ressource
Japanisch
MOBILE COMMUNICATION DEVICE AND MOBILE COMMUNICATION SYSTEM
Europäisches Patentamt | 2018
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