集中式MIMO雷达多模式一体化波形设计

Multi-mode integrated waveform design for colocated MIMO radar

摘要:

集中式多输入多输出（multiple input multiple output, MIMO）雷达系统基于波形分集优势，可灵活改变发射方向图形状和指向方向空间合成信号的特性，从而实现多种雷达工作模式。提出了一种集中式MIMO雷达多模式一体化波形设计方法，采用方向图模板拟合、模糊函数模板拟合以及通信波形拟合的方式优化不同方向上的合成信号，使其具有不同特性，从而在单脉冲时间内实现搜索、跟踪和通信功能。采用最大块增量优化算法对构造的恒模四次多项式优化模型求解。实验结果表明，该方法可以得到具有低旁瓣模糊函数的搜索与跟踪波形，并且满足通信需求。

Abstract:

The colocated multiple input multiple output(MIMO) radar system can flexibly change the shape of the transmit beampattern and the characteristics of spatial synthetic signals in the pointing direction based on the waveform diversity, thereby enabling multiple radar operating modes. This paper proposed a multi-mode integrated waveform design method for colocated MIMO radar, which used pattern template matching and ambiguity function template matching to optimize the spatial synthetic signals in different directions, so as to have different characteristics, thus realizing search, tracking, and communication functions in one pulse time. For the constructed constant modulus quartic polynomial optimization problem, this article uses the maximum block improvement(MBI) algorithm to solve it. Experiments show that the method can obtain search-and-track waveforms with low sidelobe ambiguity functions and meet the communication requirements.