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Content Provider | IET Digital Library |
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Author | Zhang, Chao Jiang, Xuefeng Chen, Dong |
Abstract | The azimuthal imaging can be acquired by the orbital angular momentum (OAM) wave. In addition, a large-scale OAM mode number is necessarily required for high azimuthal resolution. To reduce the required OAM mode number, an azimuthal imaging method based on compressed sensing and OAM mode selection is presented. To be specific, the system architecture and the mathematical model of the OAM imaging radar are established. Meanwhile, an efficient OAM generation method with rotational antenna is proposed. Moreover, experiments show that different radar cross sections (RCSs) of a specific complex target can be obtained by different OAM waves, which are generated by the proposed method. It is a delight to find that the signal-to-noise ratio gain can be achieved due to the appropriate OAM mode selection in the experiment. Since different OAM waves lead to different RCSs of complex target, the OAM modes corresponding to high RCSs are selected to measure the azimuth for low complexity. Furthermore, simulations are conducted to evaluate the performance of the proposed azimuthal imaging method for the general complex target. Using Monte Carlo simulations, it is found that the accuracy of azimuthal imaging can be guaranteed by the proposed azimuthal imaging method with only approximately 6% selected OAM modes. |
Starting Page | 2140 |
Ending Page | 2144 |
Page Count | 5 |
ISSN | 17518784 |
Volume Number | 13 |
e-ISSN | 17518792 |
Issue Number | Issue 12, Dec (2019) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/13/12 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2019.0100 |
Journal | IET Radar, Sonar & Navigation |
Publisher Date | 2019-08-14 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Angular Momentum Azimuthal Imaging Method Azimuthal Resolution Image Resolution Monte Carlo Method Monte Carlo Simulation Method OAM Generation Method OAM Imaging Radar OAM Mode Number OAM Wave Optical, Image And Video Signal Processing Orbital Angular Momentum Imaging Radar Orbital Angular Momentum Wave Proper OAM Mode Selection Radar Antenna Radar Cross Section Radar Cross Sections Radar Equipment Radar Imaging Radar Resolution Radar Theory RCS Promotion Rotational Antenna Signal-to-noise Ratio Gain Statistics System And Application |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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