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Clock synchronization is becoming an increasingly important characteristic of modern wide area monitoring and control systems such as the power grid. It provides an opportunity to coordinate control actions and measurement instants across hundreds of miles and numerous network topologies. Devices and networks have advanced to a point where synchronization across a wide area can be achieved within...
Time synchronization is an important challenge for femtocell design. An inaccurate clock can introduce interference, degrade spectrum accuracy and disrupt handovers. Among the potential solutions, wireless network-based time synchronization turns out to be cost effective because no extra provisions are required to ensure synchronization even on a regular basis. In wireless networks, receiver-receiver...
It requires accurate synchronization among the MCU, servo controllers and sensors in CNC systems for time stamping of data and motion control. This paper presents the design and implementation of time synchronization for CNC systems which employ switched Ethernet as its communication module. The method adopts the clock of switches as the master clock instead of that of MCU which usual is. To obtain...
A synchronized network time is essential for many applications in low energy-consumption distributed systems such as data fusion and target tracking. This paper presents a simple broadcast synchronization method for low energy-consumption distributed systems. It's based on sender-receiver scheme and uses only one time broadcast to synchronize all nodes in the distributed network. Also, this scheme...
For C4ISR (Command, Control, Communication, computer, Intelligence, Surveillance and Reconnaissance) system simulation and evaluation, the corresponding indexes system which is reasonable and acquirable is the key problem. To meet the need of effectiveness evaluation of C4ISR and taken the core competence of C4ISR for network-centric warfare(NCW) into consideration, we introduce and analyzes the conceptual...
Clock synchronization is an essential problem faced by packet transport network. PTP (precise time protocol) can be used to solve this problem. Its feasibility has been verified by related literatures. In this paper, we use the OPNET simulation platform to further study the key factors affect the clocks' accuracy of packet-based synchronization schemes, e.g., queuing disciplines, number of nodes that...
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