摘要
针对无人集群平台受狭小空间的限制造成的各分系统难以电磁兼容问题,在采用连续相位调制的数据链通信系统中,根据功率放大器特性,采用相匹配的基带信号脉冲边沿加窗方法,对发射信号频谱特性进行改善.仿真和工程实现表明匹配功放特性的修正加窗方法能够降低带内杂散和宽带噪声10 dB以上,可提升无人平台数据链装备的电磁兼容指标.
The deterioration of electromagnetic compatibility between subsystems on the unmanned swarm platform, resulting from the stronger coupling between antennas of various electronic loads restricted by narrow space is more prominent. To improve the ratio frequency spectrum of data link equipment using continuous phase modulation(CPM) on unmanned swarm platforms, a method windowing the baseband signal edge according to the property of amplifier is introduced. Simulation results and engineering implementation show that the method of modified window matching for amplifier can bring optimization of 10 dB in reduction of in-band stray and wide-band noise for CPM burst pulse signal, which benefits the improvement of electromagnetic compatibility for data link equipment on unmanned swarm platforms.
作者
刘飞
万佳君
杨卓凯
LIU Fei;WAN Jia-Jun;YANG Zhuo-Kai(The 20th Research Institute of China Electronics Technology Group Corporation,Xi’an Shaanxi 710068,China)
出处
《指挥与控制学报》
2020年第1期60-67,共8页
Journal of Command and Control
关键词
频谱优化
功放特性
基带加窗
杂散抑制
宽带噪声抑制
spectrum improvement
amplifier property
windowing baseband signal
reduction of in-band stray
reduction of wide-band noise
