通过对地球站现有环境系统的分析,结合节能环保的理念,充分利用现有设备,统合所有资源,设计一套直接控制新风和排风、间接控制空调,环境参数实时监测比较,调控风量进出的节能环境管理系统.本系统充分利用春冬季自然冷风能量和设备产生的热能,通过热能交换实现节能减排目标.根据环境变化,可以选择温度控制模式、压力控制模式、湿度控制模式,达到控制机房环境恒温恒湿的目的,又引入死区控制模式,以达到稳定控制环境的目的,节能效果明显,效益显著.
简要介绍了速调管高功放风机工作原理、风机和风机轴承更换步骤及注意事项。
简要介绍卫星地球上行站转星方法及注意事项。
设备的巡检是保证设备运行的重要环节,智能化巡检系统针对必须要由人力完成的巡检工作,依托RFID识别、GPS定位和GPRS无线数据传输网络等技术,对整个巡检过程实现智能化管理,确保对巡检按时到位的管理与控制。
文章对卫星通信遇到的干扰进行了总结,提出了相应的解决方法。详细介绍了抗干扰技术、干扰的判断与监测及地球站的抗干扰措施。
文章介绍了速调管高功放和速调管工作原理,具体分析了速调管高功放输出功率不稳定的三种原因:激励信号不稳定、中功放故障和速调管老化。
With development of socialism new rural areas, the rural information work has been put on the agenda. Having the background of building the rural communist party members distance education network and realizing "Access to Every Village" for radio and TV broadband network in Haian of Jiangsu province, the article discusses key issues about technology mechanism of the construction of rural broadband network, choice of WDM scheme, and building of optical distribution network. Thought and effect of the project construction are presented for everyone as a reference.
Based on the characteristic extracting of RF signal in digital cable TV system, this paper puts forward an algorithm for modulation recognition between 16QAM and 64QAM RF signals. Results of Computer simulations and real QAM signal testing show that the modulation recognition algorithm is reliable and feasible. This paper brings a useful technical practice to the safety of broadcast television broadcasting and the integration of digital TV terminals.
