To reduce the influence of multipath by using a weak radio wave having a wide frequency band so as to realize secure distance-measuring.SOLUTION: In a distance-measuring system of an embodiment for calculating a distance between a first device and a second device on the basis of transmission and reception between the devices, the distance-measuring system includes: a communication section that communicates with a first frequency band and/or with a second frequency band different from the first frequency band; a determination section that determines whether the first device is located within a predetermined range of the second device on the basis of a phase detection result of the first or the second frequency band between the devices; and a control section that controls to perform distance-measuring with the first frequency band when a determination result of the determination section indicates that the first device is not within the predetermined range, or to perform distance-measuring with the second frequency band when it indicates that the first device is within the predetermined range.SELECTED DRAWING: Figure 1
【課題】周波数帯域が広い微弱電波を利用することでマルチパスの影響を軽減し、確実な測距を可能にする。【解決手段】 実施形態の測距システムは、第1及び第2装置間で送受信に基づいて前記装置間の距離を算出する測距システムにおいて、第1の周波数帯及び/又は前記第1の周波数帯とは異なる第2の周波数帯で通信を行う通信部と、前記装置間における前記第1又は第2の周波数帯の位相検出結果に基づいて、前記第1装置が前記第2装置に対し所定の範囲内に位置するか否かを判定する判定部と、前記判定部の判定結果により、前記第1装置が前記所定の範囲内に位置しないことが示された場合には前記第1の周波数帯を用いて測距を行い、前記第1装置が前記所定の範囲内に位置することが示された場合には前記第2の周波数帯を用いて測距を行うように制御する制御部と、を備える。【選択図】図1
DISTANCE-MEASURING SYSTEM, DISTANCE-MEASURING DEVICE, AND DISTANCE-MEASURING METHOD
測距システム、測距装置及び測距方法
2020-10-01
Patent
Electronic Resource
Japanese
DISTANCE-MEASURING SYSTEM, DISTANCE-MEASURING DEVICE AND DISTANCE-MEASURING METHOD
European Patent Office | 2020
|DISTANCE-MEASURING SYSTEM, DISTANCE-MEASURING DEVICE AND DISTANCE-MEASURING METHOD
European Patent Office | 2020
|DISTANCE MEASURING SYSTEM, DISTANCE MEASURING DEVICE, AND DISTANCE MEASUREMENT METHOD
European Patent Office | 2020
|