随着侦察设备与雷达之间的对抗加剧,雷达系统的射频隐身性能直接影响到武器装备的作战能力和生存能力,低截获概率雷达技术逐渐成为研究热点。文中研究了使用信息论在频域上设计低截获概率雷达波形的方法,利用Jaya算法实现了在满足一定的雷达探测性能前提下,最小化截获接收机性能的波形优化设计。考虑到该算法是不受约束的优化过程,利用罚函数将约束条件合并到适应度函数中。仿真结果表明所提方法不受初始值选择的影响,与传统算法在恰当选取初值后的优化效果相当,具有更高的普适性和稳定性。

With the increasingly fierce confrontation between reconnaissance equipment and radar, the radio frequency stealth performance of the radar system directly affects the combat capability and survivability of weaponry. The low probability of intercept (LPI) radar technology has gradually become a research hotspot. The use of information theory to design LPI radar waveform in frequency domain is investigated in this paper. The transmit waveforms that minimize the performance of the interception receiver under the premise of satisfying certain radar detection performance are designed using Jaya optimization algorithm. Since the algorithm are unconstrained optimization procedures, the penalty function is used to incorporate the constraints into the fitness function. The simulation results show that the approach is not affected by the selection of the initial values, and is equivalent to the optimization effect of the traditional algorithm with properly selected initial values, which means it has higher universality and stability.

TN957

GF预研基金资助项目(1004-NDD17001)