HFC ( hybrid fiber and coaxial) networks are the most general mode used in cable TV networks. 光纤同轴电缆混合HFC(hybridfiberandcoaxial)网络是目前国际上广泛采用的有线电视传输方式。
Research on Hybrid Vibration Control of Naming TV Tower under Wind Excitation 南京电视塔风振的混合振动控制研究
The analysis method of hybrid vibration control applying TLD ( Tuned Liquid Damper) in combination with AMD ( Active Mass Damper) to Naming TV Tower under wind excitation is introduced in this paper. 本文介绍了采用TLD(调频液体阻尼器)和AMD(主动质量阻尼器)对南京电视塔风振反应进行混合控制的分析方法。
The effects of coupling between transverse half-wave dipoles near a square conducting cylinder on the input impedance are investigated by solving the EFIE-MFIE hybrid equation by using the Moment Method. The results obtained are useful in the design of VHP TV transmitting antenna system. 本文用矩量法求解电场型和磁场型混合积分方程,分析了方形导电柱体近旁多个横向半波振子之间的耦合对输入阻抗的影响,所得结果可作为VHF电视发射天线的设计参考。
Today hybrid fiber coax ( HFC) network is the main medium of transmitting digital TV signals, but it is necessary to determine whether HFC can meet the requirements of wideband digital TV signal transmitting by measuring and analyzing the digital TV signal parameters. 光纤同轴混合(HFC)网是目前承载数字电视信号的主要传输媒质,HFC网络能否真正满足数字电视传输网络的要求,需要对HFC网络中数字电视信号性能参数进行测试分析。
Then, based on the formation of the generalized pulse wind load of Naming TV Tower, the simulation calculation of hybrid vibration control of Naming TV Tower has been carried out by computer. 并在产生南京电视塔广义脉动风荷载样本的基础上,对混合控制的效果进行了计算机模拟。