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

Photonic approach to the measurement of time-difference-of-arrival and angle-of-arrival of a microwave signal

Not Accessible

Your library or personal account may give you access

Abstract

We propose and experimentally demonstrate a photonic approach to the measurement of the time-difference-of-arrival (TDOA) and the angle-of-arrival (AOA) of a microwave signal. In the proposed system, the TDOA and the AOA are equivalently converted into a phase shift between two replicas of a microwave signal received at two cascaded modulators. The light wave from a CW laser is externally modulated by the microwave signal at the first modulator, which is biased to suppress the optical carrier, leading to the generation of two first-order sidebands, which are further modulated by the phase-delayed microwave signal at the second modulator. Two optical components at the carrier wavelength are generated. The total power at the carrier wavelength is a function of the phase shift due to the coherent interference between the two components. Thus, by measuring the optical power, the phase shift is estimated. The AOA is calculated from the measured phase shifts. In our experiment, the phase shift of a microwave signal at 18 GHz from 160° to 40° is measured with measurement errors of less than ±2.5°.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Photonic approach for simultaneous measurements of Doppler-frequency-shift and angle-of-arrival of microwave signals

Peng Li, Lianshan Yan, Jia Ye, Xia Feng, Wei Pan, Bin Luo, Xihua Zou, Tao Zhou, and Zhiyu Chen
Opt. Express 27(6) 8709-8716 (2019)

Photonic angle-of-arrival measurement of microwave signals using a triangular wave

Xiao Zhang, Hao Chi, Yiran Gao, Hongxia He, and Yanrong Zhai
Opt. Lett. 48(19) 5013-5016 (2023)

Phase modulation parallel optical delay detector for microwave angle-of-arrival measurement with accuracy monitored

Z. Cao, Q. Wang, R. Lu, H. P. A. van den Boom, E. Tangdiongga, and A. M. J. Koonen
Opt. Lett. 39(6) 1497-1500 (2014)

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