战术认知无线电网络架构设计

认知无线电技术具有智能电磁频谱感知、干扰避免和动态频谱接入的能力，因此利用认知无线电技术可以提升战术网络的性能。由于战术作战的复杂性，需要建立适用于战术任务的认知无线电架构。首先分析了战术通信的特点和认知无线电技术在战术网络中的运用，以及目前国外战术认知无线网络的建设情况。结合战术通信网络移动性高、电磁对抗复杂的特点，利用对抗环境下的战术网络结构和模型，提出了分层的战术认知无线电网络结构以及面向作战任务的网络管理方法，形成拓扑结构分层次、管理运行分阶段的网络架构。该网络架构均衡考虑了网络的灵活性和稳定性，适用于动态变化的战术网络，为认知无线电在战术通信中的技术应用和网络设计提供了参考。

Architecture design of tactical cognitive radio networks

Due to the ability of intelligent spectrum sensing,interference avoidance and dynamic spectrum access,cognitive radio technology can greatly enhance the performance of tactical networks.It is necessary to build a network architecture suitable for tactical task,which is complex in battlefield environment. First,the characteristics of tactical communication,the application of cognitive radio technology in tactical network and the foreign tactical cognitive radio networks are analyzed.According to the properties of high mobility and complex electromagnetic countermeasurement in the tactical communication network,a hierarchical model is proposed based on the competing tactical network structure,and a network management method is put forward to meet the tactical task.The network architecture with hierarchical topology and phased management is formed. The flexibility and stability of the network are both considered in this network architecture,therefore,it is suitable for dynamic tactical network and provides a reference for the application of cognitive radio in tactical communication.