复杂环境下干扰信号优化方法研究

Jamming Waveform Optimization in Complex Environment

战场环境日益复杂多变，对干扰机性能提出了更高要求。文章研究复杂环境下干扰信号优化设计方法，一方面，干扰机能够根据当前环境参数自适应地进行干扰信号优化，从而提高干扰效果；另一方面，需要抑制干扰信号在某些特定频带内的功率，从而降低对己方电磁系统的干扰。文章同时采用互信息准则以及阻带约束准则这两个目标函数进行干扰优化设计，该方法不仅能够提高干扰机对雷达系统估计性能的影响，还能有效降低对己方已占用频带的影响，有较好的应用前景。仿真结果验证了该方法的有效性。

The electromagnetic environment in the battle field is becoming more and more com- plex which places a higher demand of the jamming performance. In this paper, the jamming waveform optimization method in complex environment is addressed. On the one hand, the jam- ming signal can be adaptively optimized according to the current environment, so that the jam- ming performance will be improved. On the other hand, the jamming power in certain frequency bands should be suppressed to reduce the interference to the systems of our own side. Two opti- mization targets, namely the mutual information and the stopband constraint, are used simultane- ously to design the optimal jamming waveform. Using the proposed method, the optimal jamming not only reduces the radar estimation performance, but also reduces the interference in the occu- pied frequency bands. Simulation results illustrate the effectiveness of the method in this paper.