Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 40,
  • Issue 9,
  • pp. 2862-2869
  • (2022)

An RF-Source-Free Reconfigurable Microwave Photonic Radar With High-Resolution and Fast Detection Capability

Not Accessible

Your library or personal account may give you access

Abstract

This paper presents a novel microwave photonic (MWP) radar scheme that is capable of optically generating and processing broadband linear frequency-modulated (LFM) microwave signals without using any radio-frequency (RF) sources. In the transmitter, a broadband LFM microwave signal is generated by controlling the period-one (P1) oscillation of an optically injected semiconductor laser. After targets reflection, photonic de-chirping is implemented based on a dual-drive Mach-Zehnder modulator (DMZM), which is followed by a low-speed analog-to-digital converter (ADC) and digital signal processer (DSP) to reconstruct target information. Without the limitations of external RF sources, the proposed radar has an ultra-flexible tunability, and the main operating parameters are adjustable, including the central frequency, bandwidth, frequency band, and temporal period. In the experiment, a fully photonics-based radar with a bandwidth of 4 GHz is established for high-resolution and fast detection. The results show that a high range resolution reaching ∼1.88 cm, and a two-dimensional (2D) imaging resolution as high as ∼1.88 cm × ∼2.00 cm is achieved with a sampling rate of 100 MSa/s in the receiver. The flexible tunability of the radar is also experimentally demonstrated. The proposed radar scheme features low cost, simple structure, and high reconfigurability, which may pave the way for future multifunction adaptive and miniaturized radars.

PDF Article
More Like This
Novel RF-source-free reconfigurable microwave photonic radar

Xiangpeng Zhang, Henan Zeng, Jiyao Yang, Ziqiang Yin, Qiang Sun, and Wangzhe Li
Opt. Express 28(9) 13650-13661 (2020)

Photonics-based MIMO radar with high-resolution and fast detection capability

Fangzheng Zhang, Bindong Gao, and Shilong Pan
Opt. Express 26(13) 17529-17540 (2018)

Ka-band microwave photonic ultra-wideband imaging radar for capturing quantitative target information

Anle Wang, Jianghai Wo, Xiong Luo, Yalan Wang, Wenshan Cong, Pengfei Du, Junkai Zhang, Biao Zhao, Jin Zhang, Yong Zhu, Jiangqiao Lan, and Lan Yu
Opt. Express 26(16) 20708-20717 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved