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    • 28. 发明申请
    • POSITIONING USING NON-LINE-OF-SIGHT SIGNALS
    • 使用非线性信号的定位
    • WO2015179704A3
    • 2016-01-14
    • PCT/US2015032064
    • 2015-05-21
    • MILLER ISAAC THOMASSCHOENBERG JONATHAN
    • MILLER ISAAC THOMASSCHOENBERG JONATHAN
    • G01S19/42G01S5/02G01S19/06G06T17/00
    • H04W56/0095G01S5/0273G01S19/06G01S19/428H04B7/18513H04W4/025H04W56/003
    • Systems, methods, and computer program products for determining a location from non-line-of-sight (NLOS) signals are described. An RF receiver can receive signals of an RF transmitter (e.g., a GNSS satellite) reflected by one or more building surfaces. A processor embedded in or coupled to the RF receiver can reduce the effects of multipath interference caused by the reflections using data on reflective characteristics of buildings located close to the RF receiver. The data can include information on which surfaces of the buildings are visible to the RF receiver. The processor can then estimate, from the visible surfaces and known satellite locations, feasible signal paths for a signal from a satellite to the RF receiver. The processor can then correct a location estimation by taking into account the multipath effects of the signal traveling along the feasible signal paths.
    • 描述了用于从非视距(NLOS)信号确定位置的系统,方法和计算机程序产品。 RF接收机可以接收由一个或多个建筑物表面反射的RF发射器(例如,GNSS卫星)的信号。 嵌入或耦合到RF接收机的处理器可以减少使用数据对靠近RF接收机的建筑物的反射特性的反射引起的多径干扰的影响。 数据可以包括关于RF接收器对建筑物的哪个表面可见的信息。 然后,处理器可以从可见表面和已知的卫星位置估计用于从卫星到RF接收机的信号的可行信号路径。 然后,处理器可以通过考虑沿着可行信号路径行进的信号的多路径效应来校正位置估计。