通信学报 ›› 2021, Vol. 42 ›› Issue (5): 1-12.doi: 10.11959/j.issn.1000-436x.2021084
所属专题: 知识图谱
• 学术论文 • 下一篇
孙佳琛, 王金龙, 丁国如, 陈瑾, 龚玉萍
修回日期:
2020-11-09
出版日期:
2021-05-25
发布日期:
2021-05-01
作者简介:
孙佳琛(1994- ),女,江苏南通人,陆军工程大学博士生,主要研究方向为频谱数据分析、无线通信、认知无线网络基金资助:
Jiachen SUN, Jinlong WANG, Guoru DING, Jin CHEN, Yuping GONG
Revised:
2020-11-09
Online:
2021-05-25
Published:
2021-05-01
Supported by:
摘要:
针对当前频谱管理中表征方式较单一、管理方式对人的经验依赖性较强、管理效率和精准度较低等问题,面向未来频谱管理的自动化、智能化、精准化需求,将知识图谱理论与技术引入频谱管理中,给出了频谱知识图谱的概念和其依赖的频谱知识体系,以及三元组形式的表示方法,构建了由图谱层、设备层和场景层构成的基于频谱知识图谱的智能频谱管理框架,探讨了基于频谱知识图谱的用频推荐、频谱搜索、频谱问答等典型应用。仿真实验表明,频谱知识图谱能在用频推荐中发挥知识引导的作用。
中图分类号:
孙佳琛, 王金龙, 丁国如, 陈瑾, 龚玉萍. 频谱知识图谱:面向未来频谱管理的智能引擎[J]. 通信学报, 2021, 42(5): 1-12.
Jiachen SUN, Jinlong WANG, Guoru DING, Jin CHEN, Yuping GONG. Spectrum knowledge graph: an intelligent engine facing future spectrum management[J]. Journal on Communications, 2021, 42(5): 1-12.
表1
相关概念与知识图谱的联系和区别"
概念 | 含义 | 与知识图谱的联系 | 与知识图谱的区别 |
专家系统[ | 一个具有大量的专门知识与经验的程序系统,由知识库和推理机两部分组成 | 对领域知识进行知识表示并形成知识库/集合 | 专家系统的知识库依靠专家手动获取知识,知识图谱则支持自动化构建 |
语义网络 | 一个带标识的有向图。图中节点表示各种事物、概念、情况、状态等,节点与节点间连接线表示各种语义联系、动作[ | 图结构化的知识表示方法 | 语义网络缺乏形式化的语法规范和形式化的语义标准,概念与实体之间没有明显的区分,节点与边难以进行更加丰富的定义 |
本体 | 定义了某一领域内的专业词汇以及它们之间的关系,是对概念化的精确描述 | 提供了一种人、机器等不同主体间交流的语义基础 | 本体侧重于描述概念类别和通用关系,较体系化;知识图谱包含更多具体实例,反映的是本体基础知识的具体表现结果 |
语义网 | 将Web中数据以RDF与互联网本体语言(OWL, ontology Web language)来表示,建立网络数据之间的语义关系,使处理数据的机器能够像人一样理解网络上的信息,从而提供更好的网络服务[ | 常采用基础数据模型RDF | 语义网的表示对象主要是万维网上的文档,如超文本标记语言(HTML, hypertext markup language)文档、可扩展标记语言(XML, extensive markup language)文档;知识图谱中实体的含义和类型更丰富 |
表2
频谱知识体系示例"
概念类别 | 实体及其属性 |
资源类 | 频段[频率范围、业务类型] |
信道[带宽、中心频率、占空比] | |
通信设备[名称、工作频段、所处位置、发射功率、调制方式] | |
电台[工作方式] | |
雷达设备[名称、工作频段、所处位置、发射功率] | |
设备类 | 雷达[信号形式、天线类型、扫描方式、角跟踪方式] |
导航设备[名称、工作频段、发射功率] | |
卫星[轨道高度、是否同步、轨道偏心率,近地点幅角] | |
电抗设备[名称、身份、工作频段、发射功率] | |
干扰武器[搭载平台、干扰模式] | |
频谱秩序管理 | |
黑广播检测 | |
窃听器检测 | |
频谱对抗管理 | |
场景类 | 电磁欺骗 |
电磁干扰 | |
频谱共享管理 | |
空地频谱共享 | |
通信雷达频谱共享 | |
频谱感知 | |
技术类 | 频谱预测 |
频谱决策 |
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