Microwave Photonic Joint Radar and Secure Communication via Radar Signal Masking

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE microwave and wireless technology letters Pub Date : 2025-07-10 DOI:10.1109/LMWT.2025.3578137

Taixia Shi;Fangzheng Zhang;Yang Chen

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引用次数: 0

Abstract

A microwave photonic system for joint radar and secure communication is proposed. Microwave photonic frequency multiplying and frequency conversion are simultaneously employed to shift the radar and communication signals to the same frequency band concurrently. The radar signal is designed to have a greater power to mask the communication signal, increasing the difficulty of signal interception and thus enhancing security. By employing dechirping at the radar receiver and self-interference cancellation (SIC) at the communication receiver, respectively, the radar function can be implemented and the communication signal can also be correctly demodulated after removing the radar masking. An experiment is performed. A 0.3-GHz bandwidth linearly frequency-modulated (LFM) signal is quadrupled and superimposed with two upconverted 0.5-Gbaud orthogonal frequency-division multiplexing (OFDM) signals. A communication data rate of 2 Gbit/s, a radar ranging measurement error of less than ±0.3 cm, and a radar inverse synthetic aperture radar (ISAR) imaging resolution of

$12.5\times 10.2$

cm are achieved.

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微波光子联合雷达与雷达信号掩蔽的保密通信

提出了一种用于联合雷达和保密通信的微波光子系统。同时采用微波光子倍频和变频技术，将雷达信号和通信信号同时移至同一频段。雷达信号被设计成具有更大的功率来掩盖通信信号，增加信号拦截的难度，从而增强安全性。通过在雷达接收机处分别采用解调和在通信接收机处分别采用自干扰抵消（SIC），可以实现雷达功能，并且在去除雷达掩蔽后也可以正确解调通信信号。并进行了实验。将一个带宽为0.3 ghz的线性调频（LFM）信号与两个上变频的0.5 gbaud正交频分复用（OFDM）信号进行四倍叠加。通信数据速率达到2 Gbit/s，雷达测距误差小于±0.3 cm，雷达逆合成孔径雷达（ISAR）成像分辨率为12.5 × 10.2 cm。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE microwave and wireless technology letters

CiteScore

6.00

自引率

0.00%

发文量