Invention Grant
US08768618B1 Determining a location of a mobile device using a multi-modal kalman filter
有权
使用多模式卡尔曼滤波器确定移动设备的位置
- Patent Title: Determining a location of a mobile device using a multi-modal kalman filter
- Patent Title (中): 使用多模式卡尔曼滤波器确定移动设备的位置
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Application No.: US13936202Application Date: 2013-07-07
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Publication No.: US08768618B1Publication Date: 2014-07-01
- Inventor: David Nicholas Christie , Brian Patrick Williams , Mohammed Waleed Kadous
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: G01S19/42
- IPC: G01S19/42 ; G01C21/00

Abstract:
Methods and systems for determining a location of a mobile device using a multi-modal Kalman filter are described. According to an example method, a mobile device may maintain multiple approximations of a location of a mobile device. Each approximation includes an estimated geographic location of the mobile device that is determined by filtering a respective subset of location estimates received by the mobile device using a respective Kalman filter, and one of the multiple approximations is designated as an active approximation. The method also involves receiving data indicating an estimate of a geographic location of the mobile device and, based on a distance between the estimate of the geographic location and a given approximation of the multiple approximations, updating the given approximation using the estimate of the geographic location. Additionally, the method involves providing for display a visual indication of an estimated geographic location associated with the active approximation.
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