Open AccessExperimental demonstration of a multi-target detection technique using an X-band optically steered phased array radar
Author(s) -
Nuannuan Shi,
Ming Li,
Ye Deng,
Lihong Zhang,
Shumin Sun,
Jian Tang,
Wei Li,
Na Zhu
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.014438
Subject(s) - phased array , optics , azimuth , radar , phased array optics , physics , ranging , beam steering , beam (structure) , computer science , antenna (radio) , telecommunications
An X-band optically-steered phased array radar is developed to demonstrate high resolution multi-target detection. The beam forming is implemented based on wavelength-swept true time delay (TTD) technique. The beam forming system has a wide direction tuning range of ± 54 degree, low magnitude ripple of ± 0.5 dB and small delay error of 0.13 ps/nm. To further verify performance of the proposed optically-steered phased array radar, three experiments are then carried out to implement the single and multiple target detection. A linearly chirped X-band microwave signal is used as radar signal which is finally compressed at the receiver to improve the detection accuracy. The ranging resolution for multi-target detection is up to 2 cm within the measuring distance over 4 m and the azimuth angle error is less than 4 degree.