Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Photonics-assisted compressed sensing radar receiver for frequency domain non-sparse signal sampling based on dictionary learning

Not Accessible

Your library or personal account may give you access

Abstract

A photonics-assisted radar receiver based on compressed sensing (CS) technology is proposed to receive frequency domain non-sparse radar signals. The radar echo signal is mixed with a pseudo-random binary sequence (PRBS) in a photonic random demodulator (RD) consisting of a laser diode (LD), a dual-drive Mach–Zehnder modulator (DD-MZM), and a photodetector (PD). After the mixed signal from the photonic RD is undersampled by an analog-to-digital converter (ADC), the echo signal is reconstructed in the digital domain using an overcomplete dictionary generated by the dictionary learning algorithm and sparse reconstruction algorithm. The target range can be then obtained by correlating the reconstructed echo signal and the transmitted one. Experimental results show that the proposed system can successfully reconstruct different kinds of undersampled non-sparse radar echo signals. When the compression ratio is 20, the ranging errors do not exceed 5 cm. The system provides a promising solution for recovering undersampled frequency domain non-sparse radar signals through photonics-assisted CS.

© 2023 Optica Publishing Group

Full Article  |  PDF Article
More Like This
Photonic compressive sensing of sparse radio frequency signals with a single dual-electrode Mach–Zehnder modulator

Bo Yang, Shuna Yang, Zizheng Cao, Jun Ou, Yanrong Zhai, and Hao Chi
Opt. Lett. 45(20) 5708-5711 (2020)

Photonics-assisted compressed sensing of radio frequencies with a rate-doubled bipolar random sequence

Runcheng Li, Hao Chi, Bo Yang, Shuna Yang, and Tao Jin
Opt. Lett. 48(3) 692-695 (2023)

Tunable radar compound coherent jamming signal generation based on microwave photonics

Yuchao Wang, Aijun Wen, and Yuan Men
Opt. Lett. 48(22) 5883-5886 (2023)

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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

Figures (5)

You do not have subscription access to this journal. Figure files 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

Equations (4)

You do not have subscription access to this journal. Equations 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