利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.022 秒)

    METHODS AND DEVICES FOR BIAS ESTIMATION AND CORRECTION
    1.
    发明申请
    METHODS AND DEVICES FOR BIAS ESTIMATION AND CORRECTION 有权
    用于偏差估计和校正的方法和装置

    公开(公告)号：US20160069676A1

    公开(公告)日：2016-03-10

    申请号：US14477191

    申请日：2014-09-04

    申请人： Khalifa University of Science, Technology, and Research ,  British Telecommunications plc ,  Emirates Telecommunications Corporation

    发明人： Nayef Alsindi ,  James Aweya ,  Zdenek Chaloupka

    IPC分类号： G01B21/16 ,  G01S19/00

    CPC分类号： G01S19/00 ,  G01S5/0215 ,  G01S19/22

    摘要： This invention relates to methods and devices for bias estimation and correction, particularly for time-of-arrival (TOA) based wireless geolocation systems. Multipath and non-line-of-sight (NLOS) biases can cause distance estimation errors in the range of tens-hundreds of meters and is particularly problematic in urban and indoor environments. The behaviour of the biases dynamically changes depending on the clutter and/or obstructions between the base station and the mobile device. Aspects of the present invention provide practical real-time bias estimation and correction techniques for TOA-based systems and are based on inferring and estimating the biases from dynamic time differential measurements. The techniques can operate in real-time and involve simple calculations.

    摘要翻译： 本发明涉及用于偏差估计和校正的方法和装置，特别是用于基于到达时间（TOA）的无线地理定位系统。 多路径和非视距（NLOS）偏差可能导致距离估计误差在数百米范围内，并且在城市和室内环境中尤其成问题。 偏移的动作根据基站和移动设备之间的杂波和/或障碍物动态地变化。 本发明的各方面为基于TOA的系统提供实用的实时偏差估计和校正技术，并且基于从动态时间差分测量推断和估计偏差。 这些技术可以实时操作，并且涉及简单的计算。