通信约束下的干扰波束成形和功率分配方法

Jamming Beamforming and Power Allocation Under Communication Constraints

通扰一体是网络信息体系和网电攻防融合的重要手段之一。针对电子战中频谱环境复杂、通信质量无法保证、干扰信号难以灵活控制的问题,提出了一种通信约束下的干扰系统设计方法。利用多天线空分复用增益,同时进行信息传输与通信干扰,通过对波形的合理设计避免我方干扰信号对己方通信信号的影响,提高干扰效果的同时保证通信系统有效性。考虑基于零空间的干扰波束成形和干扰目标的威胁等级,建立了通扰一体的干扰效果最优化问题。在3种不同的先验信息条件下对优化问题进行求解。仿真结果表明,该方案充分利用了多天线的空分复用增益和干扰目标的各种先验信息,在对抗环境下避免了干扰信号对己方通信信号的影响,且在能耗相同的情况下能达到更好的干扰效果。

Communication while jamming is an important function for the integration of network information system with electronic attack and defense.In electronic warfare,the spectrum environment is complex,the communication quality can not be guaranteed,and the jamming signal is difficult to control flexibly.Focused on these problems,a method of designing the jamming system under communication constraints was proposed.By exploiting multi-antenna spatial division multiplex to conduct communication while jamming at the same time,the impact of jamming signals on own communication signals can be avoided by the reasonable design of beamforming vectors,so as to improve the jamming effect and ensure the efficiency of communication.Considering the threat level of the jammed target and jamming beamforming based on the pattern of null space,the efficiency optimization problem of jamming while communicating was established.The optimization problem was solved under conditions of three different pieces of apriori information.The simulation results show that the scheme,making full use of the spatial division multiplex and various apriori information of the jammed target,avoids the impact of the jamming signal on own communication signal in confrontational scenarios,and achieves better jamming effect with the same energy consumption.