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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Minqiu Mao, Xingpeng Guo, Ran Cao, Ming Yang Liu, Yongtan |
| Abstract | This study focuses on the design methods for uniform linear array (ULA) based directional antenna arrays by optimising the radiation characteristics of elements. To improve the performance of direction-of-arrival (DOA) estimation in a predetermined objective spatial sector which includes all the potential directions of incidence, Cramér–Rao bound based optimisation models are established by utilising the least squares fitting technique. Besides, a modified simulated annealing (SA) algorithm with the iteration of parameters is proposed, aiming to solve the optimisation problems when the classic SA is invalid. Compared with the corresponding conventional ULA, an optimised array can obtain higher accuracy of DOA estimation in the objective spatial sector with little fluctuation. Additionally, the optimised design of radiation characteristics can also suppress the ambiguities, and remains effective for the arrays with different aperture. Simulation results verify the effectiveness of the proposed methods and the superiority of the optimised arrays. |
| Starting Page | 247 |
| Ending Page | 254 |
| Page Count | 8 |
| ISSN | 17519675 |
| Volume Number | 12 |
| e-ISSN | 17519683 |
| Issue Number | Issue 2, Apr (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/12/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2017.0163 |
| Journal | IET Signal Processing |
| Publisher Date | 2017-10-02 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Array Antenna Radiation Pattern Cramér–Rao Bound Functions Design Method Direction of Arrival Estimation Directive Antenna DOA Estimation Interpolation And Function Approximation Least Squares Approximation Least Squares Fitting Technique Linear Antenna Array Modified Simulated Annealing Algorithm Numerical Analysis Objective Spatial Sector Optimisation Optimisation Model Optimisation Technique Radiation Characteristic SA Algorithm Signal Processing And Detection Simulated Annealing ULA-based Directional Antenna Array Uniform Linear Array |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Electrical and Electronic Engineering |
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