战术数据链空时联合抗干扰技术

针对战术数据链在复杂电磁环境下性能受限的问题，提出基于非标准构型阵列天线的战术数据链空时联合抗干扰技术。该技术在常规导向矢量获取方法失效时，通过设计引导信号，结合盲自适应抗干扰算法进行干扰信号的抑制和引导信号的重构，实现对干扰方向调零抑制并保持通信信号的正常接收。仿真结果表明，通信信号经过空时联合抗干扰处理后，在干扰方向形成的零陷超过-30 dB,大大抑制了干扰方向的信号，保存了信号方向的信号。

Space-time adaptive anti-jamming technique for tactical data link

For the problem that the performance of tactical data link decreases in the complex electromagnetic environment,a space-time adaptive anti-jamming method is proposed for ultra-short wave data link with non-regular array antenna.It is difficult to obtain a precise steering vector of non-regular array antenna.To solve the problem,a guiding signal is developed at transmitter,the jamming signal is suppressed by blind adaptive algorithm and a guiding signal is reconstructed at receiver.Then,the communication performance is improved under the jamming environment by space-time adaptive processing.The simulation results show that the jamming signal is suppressed by the beam null and the null depth exceeds -30 dB at the direction of the jamming signal,and the communication signal is obtained at the direction of the signal.