基于最小干扰电平的短波自适应实时选频的研究

Adaptive Real-Time Frequency Selection in HF Channel Based on Minimum Interference

通过对短波信道实际采集数据的统计分析,验证了于扰信道条件下频率分布具有“多孔性”和各频点干扰电平具有“瞬时”稳定性,提出基于干扰电平最小的短波自适应实时选频算法;该算法根据信道的干扰情况自动调节选频门限,能够更精确地反映短波信道干扰情况的实时特性,选频精确度更高,具有抗“突发性”干扰能力;最后通过实验仿真证明此选频算法是正确的、可行的。

The ＂multi- gap＂ and ＂transient-stability＂ feature of HF Channel had been verified by analyzing data captured in HF channel. Then an adaptive real-time frequency selection algorithm based on minimum interference is presented. The algorithm can automatically adjust the threshold of the frequency-selection depending on the channel interference, and can reflect the real-time characteristic of HF channel. So the algorithm has high accuracy of frequency selection and strong ability of anti-interference. Results of experiments and simulation proved the algorithm is accurate and feasible.