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We proposed and demonstrated a cost-effective in-band optical signal to noise ratio (OSNR) monitoring technique based on coherent hybrid in 20Gb/s CO-OFDM system. Less than 0.5dB monitoring error is achieved with 400MHz balanced photodetector (PD).
As the rapid development of China's highway construction, the rationality of the design of public transport routes has to face a severe test, since a static bus system can not keep up with the social life nowadays. In this article, we will talk about using the ArcGIS Server technology to develop a dynamic bus monitoring and scheduling system, which combines 3S technology (GPS, RS, GIS) together, to...
When power cables cross regions with unfavorable thermal conditions, the conductor temperatures higher than the design value can occur; the ampacity of the rated cable is significantly affected for high thermal resistivity in thermally unfavorable regions. This paper presents a three-dimensional heat network model with consideration the heat flow in two directions-radial and longitudinal. The algorithm...
The KPI theory in hull subsection production information management system software is very suitable. At present, enterprises make use of the hull section information management system software to focus only on progress monitoring; it is deficient in crisis early warning. The paper will design a hull subsection production crisis early warning management information system based on KPI, Expanding the...
The nodes of Wireless Sensor Network used in forest monitoring can not replace battery frequently, so they can not use disposable chemical battery with limited energy as traditional sensor network nodes. This article studied on the WSN node power system for forest monitoring, designed a node solar power system on the basis of analysis of the sensor node hardware and energy situation, and introduced...
A Minimum Mean Squared Error (MMSE) controller based on RBF neural network has been developed as a new EPC strategy used in an integrated SPC and EPC system for process adjusting and monitoring. The application example used in chemical production process which is an AR(2) model shows that method can effectively reduce the process variations, then SPC control charts have been used to monitor the process...
Aimed at an integration system of SPC (statistical process control) and APC (automatic process control), the effect of APC on SPC detection capability is analyzed. In this paper, the process disturbance is assumed to be an ARMA (1, 1) process. BP Neural Network with good capability of mode identification is used to substitute traditional SPC technology. Then an integrated design methodology has been...
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