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    • 2. 发明授权
    • Method and device for synchronizing rectilinear or quasi-rectilinear links in the presence of interference
    • 在存在干扰的情况下使直线或准直线链路同步的方法和装置
    • US07940856B2
    • 2011-05-10
    • US11816906
    • 2006-02-20
    • Pascal ChevalierPipon FrancoisFrançois Delaveau
    • Pascal ChevalierPipon FrancoisFrançois Delaveau
    • H04L27/00
    • H04L7/0054H04J3/0602H04L7/041H04L7/042
    • A method of synchronizing a substantially rectilinear signal being propagated through an unknown channel, in the presence of unknown substantially rectilinear interferences, received by an array of N sensors, in which a known training sequence s(nT) is used comprising K symbols and sampled at the symbol rate T (s(nT), 0≦n≦{tilde over (K)}1), characterized in that, based on observations x((n+l/p)T) over the duration of the training sequence, where p=T/Te is an integer and Te the sampling period, a virtual observation vector X((n+l/p)T)=[x((n+l/p)T)T, x((n+l/p)T)†]T is defined, as well as a decision criterion or decision statistic taking into account the second-order non-circular nature of the interferences, by using the first and second correlation matrices of the virtual observation vector X((n+l/p)T).
    • 一种使由N个传感器阵列接收的未知基本上直线干扰的未知信道传播的基本直线信号同步的方法,其中使用已知的训练序列s(nT),其包括K个符号,并在 符号率T(s(nT),0≦̸ n≦̸ {tilde over(K)} 1),其特征在于,在训练序列的持续时间内基于观察值x((n + 1 / p)T) 其中p = T / Te是整数,Te是采样周期,虚拟观测矢量X((n + 1 / p)T)= [x((n + 1 / p)T)T,x((n + 通过使用虚拟观测向量X的第一和第二相关矩阵来定义考虑到干扰的二阶非循环性质的判定标准或判定统计量, ((n + 1 / p)T)。
    • 5. 发明授权
    • Method for estimating a correlation matrix of interfering signals received through a sensor array
    • 用于估计通过传感器阵列接收的干扰信号的相关矩阵的方法
    • US06853961B2
    • 2005-02-08
    • US10221178
    • 2001-03-16
    • Pascal ChevalierFrançois Pipon
    • Pascal ChevalierFrançois Pipon
    • G06F17/15G06K9/00G06F15/00
    • G06F17/15G06K9/0057
    • Process for estimating the correlation matrix of signals of unknown characteristics in an array of N sensor. The process determines the correlation matrix {circumflex over (R)}s of the signals of known characteristics, estimates the correlation matrix {circumflex over (R)}x of the sensor signals, forms a matrix A equal to A={circumflex over (R)}s−1/2{circumflex over (R)}x {circumflex over (R)}s−1/2 and decomposes the matrix A into eigenelements, constructs a matrix B based on the eigenelements of the matrix A, and determines the estimated correlation matrix {circumflex over (R)}b of the interfering signals based on the estimated matrix {circumflex over (R)}s and of the matrix B, such that {circumflex over (R)}b={circumflex over (R)}s1/2 B {circumflex over (R)}s1/2. Such a process may find application to antenna processing.
    • 用于估计N个传感器阵列中未知特征信号的相关矩阵的过程。 该过程确定已知特征的信号的相关矩阵Rs,估计传感器信号的相关矩阵Rx,形成等于A = Rs <-1/2> Rx Rs <-1/2>的矩阵A,并分解 矩阵A成为特征,基于矩阵A的特征构建矩阵B,并且基于估计的矩阵Rs和矩阵B来确定干扰信号的估计的相关矩阵Rb,使得Rb = Rs <1/2 > B Rs <1/2>。 这样的处理可以应用于天线处理。
    • 6. 发明授权
    • Method and device enabling a modem to be synchronized with an RF digital
data transmitter in the presence of jammers
    • 在存在干扰的情况下使调制解调器能够与RF数字数据发射机同步的方法和装置
    • US5812090A
    • 1998-09-22
    • US882831
    • 1997-06-27
    • Pascal ChevalierFrancois Pipon
    • Pascal ChevalierFrancois Pipon
    • H04B7/08H04L7/04G01S3/16
    • H04B7/0854H04L7/042H04B7/0851H04B7/0857H04L7/027
    • The method consists in estimating the matrix of correlation R.sub.XX of the signals received on a set of N reception sensors, computing the reverse correlation matrix R.sub.XX.sup.-n, computing vectors of intercorrelation r.sub.Xd between the signals received on the set of the N sensors and a known replica signal d(k), computing a criterion of synchronization in calculating the products of the conjugate, transposed intercorrection vectors R.sub.XX.sup.-n and of the matrix of the intercorrelation vector r.sub.Xdi and comparing the value of the criterion obtained with a determined threshold value 1 to place the synchronization on the sample for which the value of the criteria exceeds the threshold value .eta.. To estimate the Doppler shift the synchronization sequence is subdivided into a determined number of sections of symbols to carry out fast Fourier transform computations on determined intercorrelation vectors in each section.
    • 该方法在于估计在一组N个接收传感器上接收到的信号的相关值E,cir R + EE XX矩阵,计算反向相关矩阵+ E,cir R + EE XX-n,互相关的计算向量+ E,cir r + EE Xd在所述N个传感器的组合上接收的信号和已知复制信号d(k)之间,计算共轭的乘积的计算准则,转置的互补向量+ E,cir R + EE XX-n和互相关向量rXdi的矩阵,并且将获得的准则的值与确定的阈值1进行比较,以将该准则置于样本上,其中标准值超过阈值eta。 为了估计多普勒频移,同步序列被细分为确定数量的符号段,以便在每个部分中确定的相互相关矢量上执行快速傅里叶变换计算。