公开(公告)号：US20090213009A1

公开(公告)日：2009-08-27

申请号：US12143145

申请日：2008-06-20

申请人： Yousuke ISHIWATARI ,  Junshiro Kanda

发明人： Yousuke ISHIWATARI ,  Junshiro Kanda

IPC分类号： G01S5/14

CPC分类号： G01S5/021 ,  G01S11/06

摘要： A position detection server corrects for the attenuation of the intensity of an electric wave from each AP unit which is caused by walls by using map information to determine a distance between each AP unit and a terminal, acquires, as an existence region, a region of the position of the terminal in which variations are permitted to occur in the electric wave intensity due to the characteristics of the electric wave from the distance, restricts this existence region to an actionable region according to the state of the terminal, excludes any part which is blocked by walls when viewed from the immediately preceding position of the terminal from the actionable region by using the map information to determine a movable region, and narrows this movable region down to a region extending in the direction in which the terminal is moving to determine the position of the terminal.

摘要翻译： 位置检测服务器通过使用地图信息来确定每个AP单元与终端之间的距离来校正来自由墙引起的每个AP单元的电波强度的衰减，并获取作为存在区域的区域 由于距该距离的电波特性而允许在电波强度中发生变化的终端的位置根据终端的状态将该存在区域限制为可动作区域，不包括任何部分 通过使用地图信息来确定可移动区域，从端子的紧接在前的位置观察时被墙壁阻挡，并且将该可移动区域缩小到在端子移动方向上延伸的区域，以确定 终端位置。