通信辐射源个体特征提取技术

个体特征选择和提取是辐射源个体识别的关键,直接决定分类识别性能的好坏。由于在实际工程应用中,利用暂态特征进行通信辐射源个体识别难以实现,本文从稳态特征出发,对通信辐射源个体特征提取技术进行了综述,对特征的产生机理、在信号传播过程中所受到的污染以及在实际工程应用中的可行性做了归纳与分析。最后,指出了目前通信辐射源个体特征提取技术存在的问题,展望了个体识别技术未来可能的研究方面。

Overview of transmitter individual feature extraction techniques

Feature extraction is the key to transmitter individual identification technology,determine the performance of the classification and identification.In practical engineering application,it is difficult to achieve Specific Emitter Identification(SEI) with transient feature.From steady-state aspect of the received signal,the exiting techniques of transmitter individual feature extraction are reviewed,the source of the individual feature,the pollution to the feature in the communication and the feasibility in the practical engineering application are analysis and summarized.Finally,the problems of existing extraction techniques are presented,as well as possible future research directions of individual identification technology.