Affiliation:
1. East China Normal University
Abstract
A photonics-assisted joint communication-radar system is proposed by introducing a quadrature phase-shift keying (QPSK)-sliced linearly frequency-modulated (LFM) signal. An LFM signal is carrier-suppressed single-sideband modulated onto the optical carrier in one dual-parallel Mach–Zehnder modulator (DPMZM) of a dual-polarization dual-parallel Mach–Zehnder modulator (DPol-DPMZM). The other DPMZM is biased as an IQ modulator to implement QPSK modulation on the optical carrier. The polarization orthogonal optical signals from the DPol-DPMZM are further combined and detected in a photodetector to generate the QPSK-sliced LFM signal. The QPSK-sliced LFM signal is used to realize efficient data transmission and high-performance radar functions including ranging and imaging. An experiment is performed. Radar range detection with an error of less than 4 cm, inverse synthetic aperture radar imaging with a resolution of
14.99
c
m
×
3.25
c
m
, and communication with a data rate of 105.26 or 210.52 Mbit/s are successfully verified.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Shanghai
State Key Laboratory of Advanced Optical Communication Systems and Networks
Science and Technology Commission of Shanghai Municipality
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
11 articles.
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