POSITION ESTIMATION SYSTEM AND POSITION ESTIMATION METHOD

• Main Author: KUDO EISUKE
• Format: Patent
• Language: English; Japanese
• Published: 15.03.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To provide a position estimation system for accurately estimating a position of a wireless terminal.SOLUTION: A position estimation system includes: a plurality of wireless terminals Cn with sensors (n: a natural number of two or greater) located at pre-known positions so as to acquire sensor information measured by one or more sensors; a wireless terminal X with a sensor located at an unknown position so as to acquire the sensor information measured by the one or more sensors; and a position estimation device for estimating a position of the wireless terminal X. The position estimation device estimates the position of the wireless terminal X based on the sensor information received from the wireless terminal X and reception signal information to be obtained by receiving the sensor information, and environment information at the point of time when the sensor information is received from the wireless terminal X by using position information of the wireless terminal Cn, the sensor information received from the wireless terminal Cn and the reception signal information to be obtained by receiving the sensor information, and the environment information at the point of time when the sensor information is received from the wireless terminal Cn.SELECTED DRAWING: Figure 1 【課題】無線端末の位置を高精度に推定する位置推定システムを提供する。【解決手段】既知の位置にあり、１つまたは複数のセンサにより測定されたセンサ情報を取得する、複数のセンサ付き無線端末Cn（n：２以上の自然数）と、未知の位置にあり、１つまたは複数のセンサにより測定されたセンサ情報を取得するセンサ付き無線端末Xと、無線端末Xの位置を推定する位置推定装置と、を有する位置推定システムであって、前記位置推定装置は、無線端末Cnの位置情報と、無線端末Cnから受信したセンサ情報および前記センサ情報を受信して得られる受信信号情報と、無線端末Cnから前記センサ情報を受信した時点における環境情報とを利用して、無線端末Xから受信したセンサ情報および前記センサ情報を受信して得られる受信信号情報と、無線端末Xから前記センサ情報を受信した時点における環境情報とに基づき、無線端末Xの位置を推定する。【選択図】図１