为了减少频谱和硬件资源对雷达发射过程的消耗,文中提出了三种用共享阵列发射雷达和通信波形的方法。利用最小范数优化法合成不同方向的雷达和通信波形,利用此方法形成的发射波束图具有低旁瓣电平和较高的峰均功率比。因此,在最小范数优化的基础上提出迭代优化法来设计恒模发射波形。为了进一步降低由设计的等模波形形成的发射波束图的旁瓣电平,对每个发射波形的幅度进行迭代优化,最终得到幅度加权迭代优化法。数值结果表明:所设计的发射波形能同时完成雷达和通信功能,并能形成低旁瓣电平的发射波束图。

In order to reduce the consumption of frequency spectrum and hardware resources on the radar launch process, three methods of using shared array to launch integrated radar and communication waveforms are proposed. The minimum norm optimization method is used to synthesize radar and communication waveforms in different directions, but the transmit beam pattern formed by this method has low side-lobe level and high peak-to-average power ratio. Therefore, iterative optimization is proposed on the basis of the minimum norm optimization to design the constant mode transmit waveform. In order to further reduce the side-lobe level of the transmit beam pattern caused by designed equal mode waveform, the amplitude of each transmit waveform is iteratively optimized, and finally an amplitude-weighted iterative optimization method is obtained. Numerical results show that the designed transmit waveform can complete radar and communication functions at the same time, and can form a transmit beam pattern with low side-lobe level.

TN958.95

2017 年河南省科技厅资助课题