公开(公告)号：US4791599A

公开(公告)日：1988-12-13

申请号：US895967

申请日：1986-08-12

申请人： Serge Hethuin ,  Hugues Crepin ,  Jerome Fauret

发明人： Serge Hethuin ,  Hugues Crepin ,  Jerome Fauret

IPC分类号： G06F17/15 ,  G06F15/20 ,  G06F7/38

CPC分类号： G06F17/15

摘要： An auto-correlation apparatus for producing N auto-correlation values R(k), (k=0, . . . N-1) of an auto-correlation function of a sequence of digital samples x(n), (n=-.infin. . . . 0, . . . p) of an input signal, each sample being encoded as words of "b" binary bits, each value R(k) being defined by the formula: ##EQU1## wherein M is the number of digital samples. The apparatus comprises a random access memory for storing at respective addresses therein words (X,R) each of which is a concatenation of a word representing the value of a signal sample (X) and a word representing an auto-correlation value (R). A multiplier cooperating with an adder performs multiplying and summing operations on the M most recent signal sample words in accordance with the formula for R(k). A memory addressing and sequencing member supplies an addressing cycle to the memory for each received signal sample words, and controls the operations of the multiplier and adder.

摘要翻译： 一种用于产生数字样本序列x（n）的自相关函数的N个自相关值R（k），（k = 0，...，N-1）的自相关装置，（n = INFINITY ... 0，...，p），每个样本被编码为“b”个二进制位的字，每个值R（k）由下式定义：其中M是 数字样品。 该装置包括一个随机存取存储器，用于在其各个地址处存储单词（X，R），每个单词是表示信号样本（X）的值和代表自相关值（R）的单词的级联， 。 与加法器配合的乘法器根据R（k）的公式对M个最新信号采样字执行乘法和求和操作。 存储器寻址和排序成员为每个接收信号采样字向存储器提供寻址周期，并且控制乘法器和加法器的操作。