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1.发明申请公开(公告)号：US20140266873A1
公开(公告)日：2014-09-18
申请号：US13826699
申请日：2013-03-14
Applicant: Google Inc.
Inventor： Fred P. Pighin , Daniel J. Filip , Scott Ettinger , Bryan Klingner , David Martin
Abstract: A position fix identifying a geographic location of a receiver is received. The position fix was generated using signals received at the receiver from respective high-altitude signal sources (such as satellites). Imagery of a geographic area that includes the geographic location is also received. The imagery is automatically processed to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated. In response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, the position fix is identified as being potentially erroneous.
Abstract translation: 接收识别接收机的地理位置的位置锁定。 使用来自相应高空信号源（例如卫星）在接收机处接收到的信号产生定位。 还收到了包含地理位置的地理区域的图像。 当生成位置锁定时，图像被自动处理以确定一个或多个高空信号源是否从地理位置被遮挡。 响应于确定当产生位置锁定时一个或多个高空信号源从地理位置被遮挡时，定位被识别为潜在的错误。
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公开(公告)号：US09885789B2
公开(公告)日：2018-02-06
申请号：US13826699
申请日：2013-03-14
Applicant: Google Inc.
Inventor： Fred P. Pighin , Daniel J. Filip , Scott Ettinger , Bryan Klingner , David Martin
Abstract: A position fix identifying a geographic location of a receiver is received. The position fix was generated using signals received at the receiver from respective high-altitude signal sources (such as satellites). Imagery of a geographic area that includes the geographic location is also received. The imagery is automatically processed to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated. In response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, the position fix is identified as being potentially erroneous.
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