南京大学学报(自然科学版) ›› 2021, Vol. 57 ›› Issue (5): 838846.doi: 10.13232/j.cnki.jnju.2021.05.014
• • 上一篇
Yingxiao Xu, Wenjie Zi, Jieqiong Song, Ruizhe Shao, Hao Chen()
摘要:
从监测端挖掘多监测站点间电磁信息隐含的时空关联对掌握电磁频谱资源分布和使用状况、支撑电磁频谱资源精细化管理具有重要意义.目前的方法孤立地对各监测站点采集的海量数据进行预测分析,没有有效挖掘多个站点间的电磁信息变化规律,没有考虑人类活动规律的周期性,更难以利用站点间的时域、空域关联给出多站点的电磁强度信息联合预测,不能结合GIS系统给出直观、实时可视化的频谱态势地图.针对以上问题,将多个监测站点建模为图结构,提出一种基于多站点、多时间注意力机制的图神经网络MMGCN (Multi?site and Multi?temporal Attention?based Graph Convolutional Neural Network),挖掘多站点电磁强度间隐含的时空关联,提升联合预测的准确性;基于多站点联合预测数据,设计一种并行克里金插值算法,对其他未布设监测点处的电磁强度信息进行空间插值生成电磁频谱态势地图,为电磁频谱精细化管理提供直观的态势预判与决策依据.
中图分类号:
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