复杂环境下雷达抗干扰及多功能一体化波形设计方法研究

Radar Anti-jamming and Multifunctional Integrated Waveform Design in Spectrum-dense Environment

现代战争中敌我双方各种武器装备所辐射的高密度、高强度、多频谱的电磁波,民用电磁设备的辐射以及自然界产生的电磁波等导致了雷达面临的电磁频谱环境越来越复杂和拥挤。为使雷达在复杂电磁环境中能有效工作,从波形设计的角度出发,分析了雷达波形设计必须考虑的约束条件和常用的波形性能度量指标,总结了近年来针对不同应用场景需求和复杂电磁环境下的多输入多输出(Multiple Input Multiple Output,MIMO)雷达(多波形)和单输入单输出(Single Input Single Output,SISO)雷达(单波形)波形设计的建模思路和优化手段,将建模思路和优化手段扩展用多功能一体化(探通、探干等)波形设计。建模思路和优化手段可为未来复杂电磁环境下雷达抗干扰波形设计以及多功能一体化信号设计提供参考和依据。仿真实验结果表明,所提算法设计的多功能一体化波形能够在保持指定的通信需求的同时达到理想的雷达探测性能。

In modern warfare,the use of electronic countermeasures by both sides,together with the high-density,high-intensity,and multi-spectrum electromagnetic waves radiated by various weapons and equipment,the radiation from civil electromagnetic devices,and the electromagnetic waves generated by nature,have led to increasingly crowded and complex electromagnetic environment faced by radar systems.This paper proposes a waveform design method to address spectrum congestion problem and ensure proper functioning of radar systems in such environment.We first analyze the commonly used constraints and design metrics considered in radar waveform design,and then formulate and study the waveform design problems and optimization strategies for both Multiple Input Multiple Output(MIMO) radar(multi-waveform) and Single Input Single Output(SISO) radar(single waveform) under different application scenarios and complex electromagnetic environment.Finally,we present an example formulation problem to demonstrate the application of our modeling and optimization strategies to the design of integrated sensing and communication waveforms.The modeling ideas and optimization methods proposed in this paper can provide valuable references for radar anti-jamming waveform design and multi-functional integrated signal design in complex electromagnetic environment.Simulation experimental results show that the multifunctional integrated waveform designed by the proposed algorithm can achieve ideal radar detection performance while maintaining the specified communication requirements.