摘要
建立短波天波传播衰减预测的计算模型,为保障短波通信电路的可靠性提供参考依据,建立的方法主要依据ITU-RP.533-7。首先进行传播路径的判别,进而进行频率预测,最后建立传播衰减计算模型并与文献结果进行比对,两者有较好的一致性。频率预测部分摒弃了ITU-RP.533-7中的全球预测方法,采用了对我国来说较为准确的亚大方法。
For offering the basis of reference which ensures the reliability of HF communication link, to build a calculation model of HF sky-wave propagation attenuation prediction according to ITU-R P.533-7. Firstly, differentiated the propagation path. Then, predicted the frequency. Lastly, built the calculation model of propagation attenuation and compared to the result of literature, and they showed greater consistency. In the portion of frequency prediction, abandoned the global prediction method in ITU-R P. 533-7, moreover, adopted asia-oceania region method which was more exact for our country.
出处
《微型机与应用》
2010年第18期56-57,60,共3页
Microcomputer & Its Applications
关键词
传播路径
频率预测
衰减计算
propagation path
frequency prediction
attenuation calculation
