摘要
论述了Ka频段中雨衰减率和DAH雨衰减预测模型,为了建立适合我国Ka频段的雨衰减预测模型,对DAH雨衰减预测模型进行了改进。以西安和北京地区为例,通过和ITU-R频率比例关系进行仿真比较,结果表明,改进后的模型克服了DAH模型的缺陷,在理论上更适合我国的气候和地形。
The rain attenuation rate and DAH rain attenuation prediction mode in Ka band are discussed. In order to establish the rain attenuation prediction mode in Ka band for our country, the DAH rain attenuation prediction mode is improved. Taking Xi＇an and Beijing as an example, comparison with the ITU - R frequency proportional model shows that the improved model has overcome the shortcomings of the DAH model, and is better suited to our country in theory.
出处
《电讯技术》
北大核心
2010年第1期53-56,共4页
Telecommunication Engineering
基金
2009年度陕西省自然基金资助项目(2009JM8001-3)~~
关键词
卫星通信
KA频段
雨衰预测
DAH模型
satellite communication
Ka band
rain attenuation prediction
DAH model
