发明名称 Method and device enabling a modem to be synchronized with an RF digital data transmitter in the presence of jammers
摘要 The method consists in estimating the matrix of correlation +E,cir R+EE XX of the signals received on a set of N reception sensors, computing the reverse correlation matrix +E,cir R+EE XX-n, computing vectors of intercorrelation +E,cir r+EE 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 +E,cir R+EE XX-n and of the matrix of the intercorrelation vector rXdi 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.
申请公布号 US5812090(A) 申请公布日期 1998.09.22
申请号 US19970882831 申请日期 1997.06.27
申请人 THOMSON-CSF 发明人 CHEVALIER, PASCAL;PIPON, FRANCOIS
分类号 H04B7/08;H04L7/04;(IPC1-7):G01S3/16 主分类号 H04B7/08
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