部分频带噪声干扰条件下快跳频系统性能研究

Study on the Performance of Fast Frequency Hopping System under Partial Band Noise Jamming

部分频带噪声干扰是常见的一种干扰形式,对于快跳频系统来说,当干扰功率一定时,存在最佳的干扰比例。自归一合并算法是快跳频系统中一种简单有效的抗干扰处理算法。文章结合自归一合并接收算法下快跳频系统的理论误码率,对部分频带噪声干扰的影响进行了分析;同时建立快跳频系统仿真模型,在不同条件下分别针对多种分集数进行了仿真,得到不同干扰比例对系统性能的影响;并将实际系统的测试数据与仿真结果进行了对比。仿真得到的结论可以为实际工程中快跳频系统的性能评估及参数设计提供指导。

Partial band noise jamming is a common form of jamming, when the jamming power is constant, there must exist the best proportion of jamming for FFH(fast frequency hopping)system. Self-normalizing combining is a kind of simple and effective anti-jamming processing algorithm in FFH, by the theoretical BER for self-normalizing combining, this paper analyzes the influence of the partial band noise jamming. FFH system simulation model is set up at the same time, the simulation of system performance under the different condition is performed. The simulation for different jamming ratio will affect the performance of the system. And the test data of the actual system is compared with the simulation results. The simulation results can provide guidance for the performance evaluation and parameter design of FFH systems.