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电离层掩星数据的传统反演方法是电离层球对称假设下的Abel变换反演方法,但是实际的电离层电子密度分布不是球对称的,电离层的非球对称分布给电离层电子密度反演带来误差.发展了一种新的非球对称电离层掩星反演方法,利用国际参考电离层模型提供的三维电离层电子密度分布先验信息来修正掩星总电子含量,再通过球对称假设下的Abel变换反演出电离层电子密度.利用新方法反演了星座气象、电离层和气候观察系统掩星实测数据,并将得到的反演结果与电离层探测器资料进行了比较.结果表明,新方法能够较好地反演出电离层电子密度.
The traditional inversion method of ionospheric occultation data is the Abel transform inversion method under the ionospheric spherical symmetry assumption. However, the actual ionospheric electron density distribution is not spherical symmetric, and the ionospheric asymmetric distribution of the ionospheric electron density A new asymmetric ionospheric occultation inversion method was developed to modify the total electronic content of the occultation using the information of the three-dimensional ionospheric electron density distribution provided by the international reference ionospheric model. The Abel transform of the symmetry hypothesis is used to inverse the ionospheric electron density.The measured data of the occultation of the constellation meteorological, ionospheric and climatic observation systems are retrieved by a new method, and the obtained inversion results are compared with those of the ionosphere detector. The results show that the new method can well reproduce the ionospheric electron density.