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1. CN106411418 - Accurate data acquisition clock synchronization method for hydrophone linear array

Office Chine
Numéro de la demande 201610846230.9
Date de la demande 23.09.2016
Numéro de publication 106411418
Date de publication 15.02.2017
Type de publication A
CIB
H04B 13/02
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
BTRANSMISSION
13Systèmes de transmission caractérisés par le milieu utilisé pour la transmission, non prévus dans les groupes H04B3/-H04B11/162
02Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p.ex. télégraphie par le sol
H04J 3/06
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
JCOMMUNICATION MULTIPLEX
3Systèmes multiplex à division de temps
02Détails
06Dispositions de synchronisation
H04L 29/08
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
29Dispositions, appareils, circuits ou systèmes non couverts par un seul des groupes H04L1/-H04L27/135
02Commande de la communication; Traitement de la communication
06caractérisés par un protocole
08Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
CPC
H04J 3/0644
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
0635Clock or time synchronisation in a network
0638Clock or time synchronisation among nodes; Internode synchronisation
0644External master-clock
H04B 13/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
13Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
02Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
H04L 67/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
67Network-specific arrangements or communication protocols supporting networked applications
12adapted for proprietary or special purpose networking environments, e.g. medical networks, sensor networks, networks in a car or remote metering networks
Déposants TIANJIN UNIVERSITY
Inventeurs DUAN FAJIE
LI YANCHAO
JIANG JIAJIA
YUAN WENDAN
WANG XIANQUAN
MA SHIXIONG
DENG CHE
YUAN JIANFU
XUE JUN
Titre
(EN) Accurate data acquisition clock synchronization method for hydrophone linear array
(ZH) 用于水听器线列阵的精确数据采集时钟同步方法
Abrégé
(EN)
The invention relates to a hydrophone linear array, and provides an accurate data acquisition clock synchronization method for the hydrophone linear array. The invention adopts the technical scheme that the accurate data acquisition clock synchronization method for the hydrophone linear array is implemented on a system of the hydrophone linear array; the system is formed by a main control workstation, an underwater joint and the hydrophone linear array; and the accurate data acquisition clock synchronization method comprises the particular steps of: outputting a stable high-speed clock fH by utilizing a clock source positioned at a head part of the linear array; after carrying out N frequency division, generating a low-speed synchronous clock signal fL; and after forming a differential signal by a single-ended-differential conversion circuit, feeding the differential signal to each circuit node in the hydrophone linear array by an unshielded twisted pair. The accurate data acquisition clock synchronization method provided by the invention is mainly applied to clock synchronization of the hydrophone linear array.

(ZH)
本发明涉及一种水听器线列阵,为提供一种用于水听器线列阵的精确数据采集时钟同步方法。本发明采用的技术方案是,用于水听器线列阵的精确数据采集时钟同步方法,在水听器线列阵的系统上实现,所述系统由主控工作站、水下接口、水听器线列阵构成;具体步骤是,利用位于线列阵头部的时钟源输出稳定的高速时钟fH,进行N分频后产生低速同步时钟信号fL,经过单端‑差分转换电路形成差分信号后,通过非屏蔽双绞线送至水听器线列阵中的各个电路节点。本发明主要应用于水听器线列阵时钟同步。