公开(公告)号：US5877999A

公开(公告)日：1999-03-02

申请号：US123187

申请日：1998-07-27

Applicant: Michael D. Holt ,  Richard Thomas Kane ,  Timothy Scott Meyer

Inventor： Michael D. Holt ,  Richard Thomas Kane ,  Timothy Scott Meyer

IPC: H04B10/20 ,  H04B11/00

CPC classification number: H04B10/27 ,  H04B11/00

Abstract: A method and apparatus for discriminating digital data received from a plurality of spatially distinct acoustic sensing nodes of a distributed undersea optical surveillance system. The present invention advantageously employs Code Division Multiplexing (CDM), which is a synchronous variation of Code Division Multiple Access (CDMA), to communicate a plurality of digital data bit-streams from the nodes to a common location remote therefrom. The inventive system generates at the remote location a pseudo-random reference signal that functions as a carrier for communicating sensed acoustic data from the nodes to the remote location. Using the known spatial relationship between the nodes and the remote location and the pseudo-random reference signal, the present invention operatively synchronizes correlators at the remote location to receive and differentiate data from the various individual nodes.

Abstract translation: 一种用于鉴别从分布式海底光学监视系统的多个空间不同的声学感测节点接收的数字数据的方法和装置。 本发明有利地采用码分多址（CDM），其是码分多址（CDMA）的同步变化，用于将多个数字数据比特流从节点传送到远离其的公共位置。 本发明的系统在远程位置处产生伪随机参考信号，该伪随机参考信号用作用于将感测的声学数据从节点传送到远程位置的载体。 使用节点和远程位置之间的已知空间关系以及伪随机参考信号，本发明在远程位置操作地同步相关器以接收和区分来自各个单独节点的数据。