认知干扰的策略能适应环境状态和合法系统,对于无线通信系统或诸如智能电网这类更加普遍的系统而言是一个严重威胁。认知干扰能模仿环境中的随机行为,这使合法系统难以检测到干扰的存在。提出了一种检测认知干扰是否存在的方法,即使用合法系统和环境之间的交互信息作为测定智能(或者说智能行为)的度量标准,并提出k-最近邻算法和高斯近似值这两种方法在联机方式下计算这一标准,得出的数学仿真结果用于探测认知无线电网络中是否存在认知干扰,结果验证了提出的机制能有效地探测认知干扰的存在。 Cognitive interference strategies that adapt to environmental conditions and legitimate systems are a serious threat to wireless communication systems or to more prevalent systems such as smart grid. Cognitive interference mimics random behavior in the environment, making it difficult for legitimate systems to detect the presence of interference. A method to detect the existence of cognitive interference is proposed, that is, using the mutual information between legal system and environment as the measurement standard of intelligence (or intelligent behavior), and proposes two kinds of k-nearest neighbor algorithm and Gaussian approximation The method was used to calculate this criterion in on-line mode, and the mathematical simulation results obtained were used to detect the cognitive interference in the cognitive radio network. The results verify that the proposed mechanism can effectively detect the existence of cognitive interference.