摘要
利用正则化反演法,对电离层层析成像技术进行了数值模拟.模拟结果表明,正则化反演法能够准确反演出电离层赤道异常的电子密度分布.对正则化反演误差的原因进行了分析,定义了代表重建结果精度的参数并研究其随信号数量的变化,结果显示造成反演误差的主要原因是信息量不足,在提供充足的数据条件下,正则化反演法能够得到很高精度的重建结果.数值模拟实验进一步证明了电离层层析技术在反演电离层电子密度分布中有很大的应用价值.
In this article, numerical simulation of computerized ionosphere to- mography （CIT） is presented. The result shows that, by using the regularization algorithm, the electron distribution of the ionosphere can be inverted well. The reason which affects the accuracy of the reconstruction is also discussed. A para- ment is defined which represents the accuracy of the reconstruction. By discussing the relation between the parament and the number of signals, it is concluded that the lack of information is the main high precision reconstruction result experiment proves that the CIT can electron distribution. reason for the error. In a good condition, a can be obtained. The numerical simulation be widely used in the inversion of ionosphere
出处
《应用数学与计算数学学报》
2012年第3期342-347,共6页
Communication on Applied Mathematics and Computation
基金
国家自然科学基金资助项目(40505005)
国家重点实验室专项基金资助项目(Y22612A33S)
关键词
电离层层析成像
正则化反演法
国际参考电离层模型
数值模拟
computerized ionosphere tomography(CIT)
regularization algorithm
international reference ionosphere(IRI)
numerical simulation
