测量船通信网络自检测方法

针对测量船通信网络由2层帧方式交换升级为3层包交换方式后无法使用上星自环检测方式实现自检测的问题,在分析通信网络自检测模式下的链路特性的基础上,提出基于组播报文实现自检测的构想。设计利用组播洪泛特性实现报文环回的网络拓扑结构以及实现检测与对比报文的硬件设备,阐述检测软件发送、接收、处理报文的流程,实现了网络通断、时延及丢包率的自检测,并通过模拟检测实验证明了设计方案是切实可行的。

Self-Detection Method for Communication Networks of Tracking Ships

Self-detection in radio frquency loopback detection mode is no longer possible after the communication networks of tracking ships are upgraded to three-layer packet exchange mode from two-layer frame mode.This paper proposes a conception to facilitate self-detection with the help of multicast messages following analysis of the link characteristics under communication network self-detection.Processes of sending,reception and processing of multicast messages by the detection software are described.Hardware and software are designed for the self-detection systems to enable inspections of switching,delay and packet loss rate.Functions of the system are tested through simulation.