双功能雷达通信中计算效率高的波束图合成

A. Hassanien, M. Amin, Yimin D. Zhang
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引用次数: 11

摘要

基于调幅的双功能雷达通信的本质是在整个处理周期内对发射波束方向图的副瓣进行调制,同时保持雷达功能发生的主波束不变。信息嵌入所需的不同旁瓣电平(SLL)的数量随着嵌入的比特数呈指数增长。我们提出了一种简单且计算成本低的发射波束图合成方法,该方法只需要设计和存储两个波束形成权向量。该方法首先根据DFRC系统的雷达功能要求设计主发射波束形成权向量。然后,通过向预期通信方向施加深空来获得第二个权重向量。附加的sll可以通过简单地取两个可用权重向量的加权线性组合来实现。通过仿真算例验证了该方法对波束图合成的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Computationally efficient beampattern synthesis for dual-function radar-communications
The essence of amplitude-modulation based dual-function radar-communications is to modulate the sidelobe of the transmit beampattern while keeping the main beam, where the radar function takes place, unchanged during the entire processing interval. The number of distinct sidelobe levels (SLL) required for information embedding grows exponentially with the number of bits being embedded. We propose a simple and computationally cheap method for transmit beampattern synthesis which requires designing and storing only two beamforming weight vectors. The proposed method first designs a principal transmit beamforming weight vector based on the requirements dictated by the radar function of the DFRC system. Then, a second weight vectors is obtained by enforcing a deep null towards the intended communication directions. Additional SLLs can be realized by simply taking weighted linear combinations of the two available weight vectors. The effectiveness of the proposed method for beampattern synthesis is verified using simulations examples.
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