| 电离层CT数据采集和图像重建 |
| |
| 引用本文： | 吴雄斌,徐继生,马淑英,田茂,叶公节.电离层CT数据采集和图像重建[J].遥感学报,2001,5(1):22-28. |
| |
| 作者姓名： | 吴雄斌 徐继生 马淑英 田茂 叶公节 |
| |
| 作者单位： | 1. 武汉大学 物理与电子信息科学学院,
2. Department of ECE, University of Illinois at Urbana_Champaign, IL 61801 USA |
| |
| 基金项目： | 国家自然科学基金(基金号：49584006)和高等学校博士学科点专项基金项目。 |
| |
| 摘 要： | 介绍低纬电离层CT实验所使用的数据自动采集系统并提出一种电离层CT算法。在数据采集过程中引入了GPS标准时间；重建算法的特点是利用差分多普勒频率数据避免了相位积分常数的计算，提高了对较弱的电离层扰动和不规则结构的检测能力。数值模拟反演结果表明了该算法对电离层CT重建的有效性，并给出有关实测数据的重建结果。
|
| 关 键 词： | 电离层 CT 数据采集 差分多普勒 层析成像 相位数据 扰动 图像重建 |
| 文章编号： | 1007-4619 (2001) 01-0022-07 |
| 收稿时间： | 2/2/2000 12:00:00 AM |
| 修稿时间： | 2000年2月2日 |
Data Acquisition System and Image Reconstruction for Computerized Ionospheric Tomography |
| |
| WU Xiong-bin,XU Ji-sheng,MA Shu-ying,Tian mao and YE Gong-jie.Data Acquisition System and Image Reconstruction for Computerized Ionospheric Tomography[J].Journal of Remote Sensing,2001,5(1):22-28. |
| |
| Authors: | WU Xiong-bin XU Ji-sheng MA Shu-ying Tian mao and YE Gong-jie |
| |
| Institution: | College of Physics and Electronic Information,Wuhan University,Wuhan,430072,China;College of Physics and Electronic Information,Wuhan University,Wuhan,430072,China;College of Physics and Electronic Information,Wuhan University,Wuhan,430072,China;College of Physics and Electronic Information,Wuhan University,Wuhan,430072,China;Department of ECE,University of Illionis at Urbana-Champaign,IL 61801 USA |
| |
| Abstract: | This paper presents the design and operational features of theautomatic data acquisition system for the low-latitude ionospheric tomography along the 120°E meridian. An improved reconstruction algorithm of computerized ionospheric tomography is also proposed. The algorithm avoids the calculation of integral phase constant by exploiting the differential Doppler frequency data, thus its capability of detecting weaker ionospheric irregularities has been enhanced. Both numerical simulated examples and the reconstructed results from observed data show that the new algorithm works reasonably and effectively with ionospheric CT problems. |
| |
| Keywords: | ionosphere tomography data acquisition algorithm differential doppler |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《遥感学报》浏览原始摘要信息 |
| 点击此处可从《遥感学报》下载免费的PDF全文 |
|
