Ka频段卫星上行链路开环功率控制算法研究  

A Study on Open-Loop Uplink Power Control Algorithm in Ka-Band Satellite Links

作　　者：谢德芳[1] 翁木云[1] 郭兴阳[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《空军工程大学学报（自然科学版）》2002年第1期39-42,共4页Journal of Air Force Engineering University(Natural Science Edition)

摘　　要：在Ka频段卫星通信中 ,降雨引起的信号衰减会影响卫星业务质量 ,上行链路开环功率控制是最经济的抗雨衰技术之一。文中提出的一种实时信标晴空参考电平获取方法 ,克服了雨衰强度快速变化对其的影响 ,并对开环功率控制算法的关键部分———衰减估计的具体实现电路进行了详细研究。In the Ka-band satellite communications, signal fading caused by rain reduces service quality of satellite links, and open-loop uplink power control is one of the most cost-effective rain fade countermeasure technique. In this paper, an identification method to the real time clear-sky reference level is presented,it alleviates affects of rapid variations in rain intensity. The specific realized circuits of fade estimation are studied in detail, and the fade estimation is a key part in open-loop uplink power control algorithm .

关 键 词：降雨衰减 上行链路开环功率控制 频率转换因子 晴空参考电平 

分 类 号：TN927.2[电子电信—通信与信息系统]