论文标题

具有成本效益的光子超分辨率毫分辨率波连接雷达通信系统,使用自相关检测

Cost-effective photonic super-resolution millimeter-wave joint radar-communication system using self-coherent detection

论文作者

Bai, Wenlin, Li, Peixuan, Zou, Xihua, Zhong, Ningyuan, Pan, Wei, Yan, Lianshan, Luo, Bin

论文摘要

提出了具有超级分辨率的具有成本效益的毫米波(MMW)关节雷达通信系统(JRC)系统,并使用光学异差及转换和自相关检测下转换技术进行了实验证明。该点在于设计的连贯的双波段常数线性频率调制 - 正交频施加多路复用(LFM-OFDM)信号具有相反的JRC系统的相位调制索引。因此,作为一种简单且低成本的手段,自我交联的检测是相应的,可以促进MMW雷达的隔离和MMW通信的频率下转换接收,从而避免了昂贵的高速混合器以及MMW本地振荡器以及MMW本地振荡器以及更大程度地实现了雷达和通信信息的实时分解。此外,通过双波段JRC信号的相干融合处理来实现超级分辨率雷达范围的轮廓。在实验中,产生了一个以54 GHz和61-GHz为中心的双波段LFM OFDM JRC信号。双频段具有相同的瞬时带宽为2 GHz,并带有1 GBAUD的OFDM信号,这有助于达到通信的6 gbit/s数据速率,雷达的分辨率为1.76 cm。

A cost-effective millimeter-wave (MMW) joint radar-communication (JRC) system with super resolution is proposed and experimentally demonstrated, using optical heterodyne up-conversion and self-coherent detection down-conversion techniques. The point lies in the designed coherent dual-band constant envelope linear frequency modulation-orthogonal frequency division multiplexing (LFM-OFDM) signal with opposite phase modulation indexes for the JRC system. Then the self-coherent detection, as a simple and low-cost means, is accordingly facilitated for both de-chirping of MMW radar and frequency down-conversion reception of MMW communication, which circumvents the costly high-speed mixers along with MMW local oscillators and more significantly achieves the real-time decomposition of radar and communication information. Furthermore, a super resolution radar range profile is realized through the coherent fusion processing of dual-band JRC signal. In experiments, a dual-band LFM-OFDM JRC signal centered at 54-GHz and 61-GHz is generated. The dual bands are featured with an identical instantaneous bandwidth of 2 GHz and carry an OFDM signal of 1 GBaud, which help to achieve a 6-Gbit/s data rate for communication and a 1.76-cm range resolution for radar.

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