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    • 9. 发明申请
    • Coding and Filtering for Machine-Type Communication
    • 机型通信的编码和过滤
    • US20160277870A1
    • 2016-09-22
    • US15036740
    • 2014-08-15
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • Ather Gattami
    • H04W4/00H04L25/02
    • H04W4/70H03H17/0257H03H21/003H04L1/12H04L25/0242H04L25/0258
    • Encoding and decoding schemes at an encoding device/transmitter and decoder device/receiver, respectively, for use in communicating the state of a system. In an example method carried out by an encoding device, state information x(k), which represents the current state of a monitored system, is measured. The encoding device calculates a state update parameter, based on: a message power constraint P; the covariance N of measurement noise associated with the channel over which encoded state information is to be transmitted; and the norm of the signal vector [s(k), x(k)], where s(k) is a stored state information parameter. The encoding device then calculates a message signal z(k)=G(k)*(x(k)−s(k)), which may then be transmitted to a remote decoder device, and calculates an updated version of the stored information s(k+1)=A*(s(k)+F(k)*z(k)). The encoding device replaces the stored state information s(k) with s(k+1).
    • 分别用于传达系统状态的编码设备/发射机和解码器设备/接收机处的编码和解码方案。 在由编码装置执行的示例性方法中,测量表示被监视系统的当前状态的状态信息x(k)。 编码装置根据消息功率约束P计算状态更新参数; 与要传输编码状态信息的信道相关联的测量噪声的协方差N; 和信号向量[s(k),x(k)]的范数,其中s(k)是存储状态信息参数。 然后,编码装置计算消息信号z(k)= G(k)*(x(k)-s(k)),然后将其发送到远程解码器装置,并计算已存储信息的更新版本 s(k + 1)= A *(s(k)+ F(k)* z(k))。 编码装置用s(k + 1)取代所存储的状态信息s(k)。
    • 10. 发明授权
    • Method and apparatus for filtering measurements used in a generalized positioning system
    • 用于在广义定位系统中使用的滤波测量的方法和装置
    • US06535833B1
    • 2003-03-18
    • US09444880
    • 1999-11-22
    • Jari Syrjärinne
    • Jari Syrjärinne
    • G01C1738
    • G01S19/39G01S19/46H03H17/0257
    • A positioning system based on an extended Kalman filter (EKF), or other filter, responsive to measurements provided on the basis of information received from, in some applications, cellular base stations, as well as, optionally, satellites, where, in the case of measurements by satellites, and also in other aspects of the invention as used with cellular positioning data, the EKF is modified for greater responsiveness based on use of calculated association probabilities for each measurement in a set of measurements of position at a particular instant of time, the association probabilities used in the calculation of a combined measurement innovation (residual) used in calculating the next estimate of position (and other state information, including velocity). By using a combined measurement innovation, the positioning system is able to accept simultaneous measurements based on information received from different sources of information, including both satellites and cellular base stations.
    • 基于扩展卡尔曼滤波器(EKF)或其他滤波器的定位系统,其响应于在一些应用中从蜂窝基站以及可选地卫星接收的信息提供的测量,其中在这种情况下 通过卫星进行的测量,以及与蜂窝定位数据一起使用的本发明的其它方面,EKF被修改以便在特定时刻的一组位置测量中使用计算出的每个测量的关联概率来提高响应性 ,用于计算下一次估计位置(和其他状态信息,包括速度)中使用的组合测量创新(残差)的关联概率。 通过使用组合的测量创新,定位系统能够基于从不同的信息源(包括卫星和蜂窝基站)接收的信息来接受同时测量。