摘要
为了最大程度地利用资源和减小电磁干扰,电子战平台的雷达通信一体化设计有着尤为重要的意义。针对通信中成熟应用且在雷达中有较好前景的正交多载频波形,提出直接序列扩频正交频分复用(OFDM)进行雷达通信一体化的想法。给出了实现方法,重点对该一体化信号模糊函数进行求解和分析,指出增加子载波数目信号分辨性能更佳;随机的信息流仅对模糊函数的邻道干扰项造成影响,为进一步优化一体化信号旁瓣性能提供了理论依据。最终的仿真结果和性能分析表明,该一体化信号能够实现雷达通信一体化的目的。
In order to make full utilization of resources and reduce electromagnetic interference,integration of radar and communication on the electronic warfare platform shows great significance. Since the multi-carrier signal has been widely used in communication and also shows good performances in radar detecting,an inte-grated radar and communication signal based on direct-sequence spread spectrum OFDM （ Orthogonal Fre-quency Division Multiplexing） is put forward. How to achieve the system is discussed afterwards. The ambi-guity function of the integrated signal is worked out to analyze the radar characteristics in detail. The conclu-sions that signal resolution performance grows with the increase of the sub-carrier number and random se-quence only influences adjacent channel interference of the ambiguity function define research directions to improve the signal sidelobe performance. Theoretical analysis and simulation results show that the integrated signal not only satisfies conventional radar detection but also shows good communication performance.
出处
《电讯技术》
北大核心
2014年第10期1391-1395,共5页
Telecommunication Engineering
