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 .
出处
《空军工程大学学报（自然科学版）》
CSCD
2002年第1期39-42,共4页
Journal of Air Force Engineering University(Natural Science Edition)
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
rain attenuation
open-loop uplink power control
frequency scaling ratio
clear-sky reference level
