| Refractivity estimations from an angle-of-arrival spectrum |
| |
| 作者姓名： | 赵小峰 黄思训 |
| |
| 作者单位： | Institute of Meteorology,PLA University of Science & Technology |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 40775023). |
| |
| 摘 要： | This paper addresses the probability of atmospheric refractivity estimation by using field measurements at an array of radio receivers in terms of angle-of-arrival spectrum.Angle-of-arrival spectrum information is simulated by the ray optics model and refractivity is expressed in the presence of an ideal tri-linear profile.The estimation of the refractivity is organized as an optimization problem and a genetic algorithm is used to search for the optimal solution from various trial refractivity profiles.Theoretical analysis demonstrates the feasibility of this method to retrieve the refractivity parameters.Simulation results indicate that this approach has a fair anti-noise ability and its accuracy performance is mainly dependent on the antenna aperture size and its positions.
|
| 关 键 词： | refractivity estimation angle-of-arrival spectrum ray optics model genetic algorithm |
| 收稿时间： | 2010-08-14 |
Refractivity estimations from an angle-of-arrival spectrum |
| |
| Zhao Xiao-Feng and Huang Si-Xun.Refractivity estimations from an angle-of-arrival spectrum[J].Chinese Physics B,2011,20(2):29201-029201. |
| |
| Authors: | Zhao Xiao-Feng and Huang Si-Xun |
| |
| Institution: | Institute of Meteorology, PLA University of Science & Technology, Nanjing 211101, China;Institute of Meteorology, PLA University of Science & Technology, Nanjing 211101, China |
| |
| Abstract: | This paper addresses the probability of atmospheric refractivity estimation by using field measurements at an array of radio receivers in terms of angle-of-arrival spectrum. Angle-of-arrival spectrum information is simulated by the ray optics model and refractivity is expressed in the presence of an ideal tri-linear profile. The estimation of the refractivity is organized as an optimization problem and a genetic algorithm is used to search for the optimal solution from various trial refractivity profiles. Theoretical analysis demonstrates the feasibility of this method to retrieve the refractivity parameters. Simulation results indicate that this approach has a fair anti-noise ability and its accuracy performance is mainly dependent on the antenna aperture size and its positions. |
| |
| Keywords: | refractivity estimation angle-of-arrival spectrum ray optics model genetic algorithm |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
