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    • 5. 发明申请
    • IMPROVED PROCESSES INVOLVING NON-COHERENT INTEGRATION IN A RECEIVER
    • 涉及接收器中非相关集成的改进过程
    • WO2008029195A1
    • 2008-03-13
    • PCT/IB2006/003862
    • 2006-09-08
    • NOKIA CORPORATIONVALIO, HarriPIETILA, Samuli
    • VALIO, HarriPIETILA, Samuli
    • G01S1/00H04B1/707H04B7/216
    • G01S19/30H04B1/7077H04B2201/70715
    • A non-coherent integration period is divided into a plurality of epochs and a frequency space is divided into a plurality of sub-spaces. A result of a first non-coherent integration in a first frequency sub-space over a first epoch is combined with a result of a second non-coherent integration in a second frequency sub-space over a second epoch. A method of non-coherent integration in an environment subject to drift of a time reference, the method comprising: creating a first putative non-coherent integration value by assuming no-drift of the time reference; creating a second putative non-coherent integration value by assuming drift of a first rate of the time reference; and determining a non-coherent integration value using the first putative non-coherent integration value and the second putative non-coherent integration value. A method comprising: storing first data associated with non-coherent integration, over only a first epoch, of a signal occupying only a first frequency space; and storing second data associated with non-coherent integration, over only a second epoch, of a signal occupying only a second frequency space, wherein the first epoch precedes the second epoch and the first frequency space is smaller than the second frequency space.
    • 非相干积分时段被分成多个时期,频率空间被分成多个子空间。 在第一时期上的第一频率子空间中的第一非相干积分的结果与在第二时期的第二频率子空间中的第二非相干积分的结果相结合。 一种在时间基准漂移的环境中的非相干积分的方法,所述方法包括:通过假定时间基准的无漂移来产生第一推定非相干积分值; 通过假定时间参考的第一速率的漂移来产生第二推定的非相干积分值; 以及使用所述第一推定非相干积分值和所述第二推定非相干积分值来确定非相干积分值。 一种方法,包括:存储仅占据仅第一频率空间的信号的与非相干积分相关联的第一数据,仅在第一时期; 以及存储与仅占用第二频率空间的信号的非相干积分相关联的第二数据,其中所述第一时期在所述第二时期之前,所述第一频率空间小于所述第二频率空间。
    • 7. 发明申请
    • METHOD FOR MULTI-PATH DETECTION IN SPREAD SPECTRUM RECEIVERS
    • 传播频谱接收机多路径检测方法
    • WO2006070223A1
    • 2006-07-06
    • PCT/IB2005/003203
    • 2005-10-27
    • NOKIA CORPORATIONNOKIA INC.PIETILA, SamuliVALIO, Harri
    • PIETILA, SamuliVALIO, Harri
    • H04B1/707G01S1/02
    • H04B1/7075G01S19/22H04B2201/70715
    • The present invention provides a method for a multi-path detection analysis and selectivity of CDMA signals using spread spectrum receivers using a correlation technique. The invention is based on determining by the spread spectrum receiver whether a distortion of a received radio frequency signal, caused by a multi-path component of said received signal, meets a predetermined condition using a preselected correlation analysis of said received signal. This invention is generally applicable to global navigation satellite system (GNSS) receivers and it is particularly useful in GNSS receivers, such as GPS (global positioning system) and Galileo receivers. The important goal of this invention is to provide a simple method for identifying signals that are corrupted by multi-path effects, and can be excluded from position calculation in the GNSS receivers.
    • 本发明提供使用相关技术的使用扩频接收机的CDMA信号的多路径检测分析和选择性的方法。 本发明基于扩频接收机确定由所述接收信号的多径分量引起的接收到的射频信号的失真是否满足预定条件,使用所述接收信号的预选相关分析。 本发明通常适用于全球导航卫星系统(GNSS)接收机,并且在诸如GPS(全球定位系统)和伽利略接收机之类的GNSS接收机中特别有用。 本发明的重要目标是提供用于识别被多路径效应损坏的信号的简单方法,并且可以从GNSS接收器中的位置计算中排除。