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    • 52. 发明申请
    • INDOOR LIKELIHOOD HEATMAP
    • 室内LIKELIHOOD HEATMAP
    • US20120044265A1
    • 2012-02-23
    • US13180464
    • 2011-07-11
    • Behrooz KhorashadiRajarshi GuptaSaumitra Mohan DasAlok Aggarwal
    • Behrooz KhorashadiRajarshi GuptaSaumitra Mohan DasAlok Aggarwal
    • G09G5/373
    • G01C21/206H04W4/029H04W4/043
    • The subject matter disclosed herein may relate to methods, apparatuses, systems, devices, articles, or means for generating or using an indoor likelihood heatmap, etc. For certain example implementations, a method for a device may comprise projecting multiple grid points over a schematic map of an indoor area, with the schematic map indicating multiple obstructions of the indoor area. Feasible paths between grid point pairs of the multiple grid points may be determined. For a particular grid point of the multiple grid points, a count of the feasible paths that traverse the particular grid point may be determined. A likelihood heatmap for use in one or more navigational applications may be generated based, at least in part, on the count. Other example implementations are described herein.
    • 本文公开的主题可涉及用于产生或使用室内似然热图等的方法,装置,系统,装置,物品或装置。对于某些示例性实施方式,装置的方法可以包括在示意图上投影多个网格点 室内区域的地图,示意图示出室内区域的多个障碍物。 可以确定多个网格点的网格点对之间的可行路径。 对于多个网格点的特定网格点,可以确定遍历特定网格点的可行路径的计数。 可以至少部分地基于计数来生成用于一个或多个导航应用中的似然热图。 本文描述了其他示例实现。
    • 55. 发明申请
    • MAPPING WIRELESS SIGNALS WITH MOTION SENSORS
    • 映射无线信号与运动传感器
    • US20110090081A1
    • 2011-04-21
    • US12851458
    • 2010-08-05
    • Behrooz KhorashadiSaumitra Mohan DasVinay SridharaAlok AggarwalChristopher Brunner
    • Behrooz KhorashadiSaumitra Mohan DasVinay SridharaAlok AggarwalChristopher Brunner
    • G08B1/08
    • G01S5/0252
    • A displacement device for mapping wireless signal fingerprints includes motion sensors and at least one of a received signal strength indicator (RSSI) sensor and a round trip time (RTT) sensor. The motion sensors may include a pedometer and one or more sensors to receive turn information. The start position of the displacement device is initialized and as the displacement device is moved through an environment, the position of each measurement location is determined using the initialized position and data from the motion sensors. The measurement position along with the RSSI and/or RTT measurement is stored in a database, from which a map can be generated. The position of the access point may be determined using the RSSI measurement or RTT measurement. Additionally, accumulated errors in the measurement position may be monitored and when greater than a threshold, a user may be prompted to reinitialize the position of the displacement device.
    • 用于映射无线信号指纹的位移设备包括运动传感器和接收信号强度指示器(RSSI)传感器和往返时间(RTT)传感器中的至少一个。 运动传感器可以包括计步器和用于接收转向信息的一个或多个传感器。 位移装置的起始位置被初始化,并且当位移装置移动通过环境时,使用来自运动传感器的初始化位置和数据来确定每个测量位置的位置。 测量位置与RSSI和/或RTT测量一起存储在数据库中,从中可以生成映射。 可以使用RSSI测量或RTT测量来确定接入点的位置。 此外,可以监视测量位置中的累积误差,并且当大于阈值时,可以提示用户重新初始化位移装置的位置。