Tomographic reconstruction of ionospheric electron density based on constrained algebraic reconstruction technique
Tomographic reconstruction of ionospheric electron density based on constrained algebraic reconstruction technique
复制标题
基于约束代数重建技术的电离层电子密度层析重建
DOI：
10.1007/s10291-010-0161-0
复制
发表时间：
2010-09-01
期刊：
影响因子：
4.9
通讯作者：
Tang, Pingying
中科院分区：
文献类型：
--
作者：
Wen, Debao;Liu, Sanzhi;Tang, Pingying
提出了一种电离层电子密度分布的约束代数重建方法（CART）。该方法使用一个流行的二维多点有限差分近似的二阶拉普拉斯算子提供的约束矩阵。数值模拟的层析结果表明，该方法明显提高了电子密度分布的重建精度。仔细验证了CART的可靠性和优越性。最后，将新方法应用于实际的全球导航卫星系统（GNSS）观测数据分析，并与武汉站电离层探测结果进行了比较。
A constrained algebraic reconstruction technique (CART) is proposed for the tomographic reconstruction of the ionospheric electron density distribution. The method uses a popular two-dimensional multi-point finite difference approximation of the second order Laplace operator to provide the constraint matrix. The tomographic results of a numerical simulation show that the reconstruction accuracy of electron density distribution is significantly improved. A careful validation of the reliability and superiority of CART is made. Finally, we applied the new method to the analysis of actual Global Navigation Satellite Systems (GNSS) observations and compared the results with ionosonde observation of Wuhan station.