基于传播损耗的短波自适应快速建链

摘要

针对短波电台实际使用中自适应通信建链时间过长的缺点，通过构建短波天波传播模型，实时计算传播损耗，用基于传播损耗的信道优选方法进行快速自适应建链，并在西安、兰州和延安短波台站之间进行建链测试。实测结果表明，基于传播损耗的方法与线路质量分析( LQA)方法比较，前者能在平均话音质量基本保持不变的情况下，使平均建链时间减少约一半，实时性更好，有利于短波电台的改装和自适应通信方式的推广应用。%Aiming at the shortcoming of long link establishment time for the adaptive communication of HF ( High Frequency) radio in practice, by building the HF sky wave propagation model and calculating the real-time propagation loss,a fast adaptive link establishment method is proposed by the way of channel optimiza-tion based on propagation loss and is tested among the stations in Xi’an, Lanzhou and Yan’an. The actual measurement results show that, compared with the way based on propagation loss with Link Quality Analysis ( LQA) , the proposed method can shorten the average link establishment time by about half and has a better real-time performance while the average voice quality can be kept unchanged, which is beneficial for the re-fit of HF radios and the popularization and application of adaptive communication method.