利用MARSIS数据估算火星电离层TEC：一种新方法

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-03-11 DOI:10.1016/j.icarus.2025.116545

M. Cartacci , B. Sánchez-Cano , A. Cicchetti , R. Noschese , B. Langlais , R. Orosei

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引用次数: 0

摘要

我们描述了对比法（CM）算法的一种新实现(Picardi和Sorge, 2000；伊柳申·亚和库尼琴，2004；caracci et al., 2013)用于校正火星先进雷达（MARSIS）记录的回波相位畸变(Picardi et al., 2005；Jordan et al., 2009)的地下模式。新CM的设计遵循了一种改进的方法，不仅可以执行其原始任务，而且可以以比过去更好的精度估计火星电离层的总电子含量（TEC） (Cartacci et al., 2013；Cartacci et al., 2017)，在传输频率接近电离层等离子体频率的夜侧以及白天侧，由于在方法开发中较少使用理论近似值。此外，利用近16年的MARSIS操作，对应大约8700个轨道，我们提出了一个改进的由于与火星地壳磁场相互作用而导致的夜侧TEC变化的全球地图(Safaeinili et al., 2007；Cartacci et al., 2013)。

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Mars ionosphere TEC estimation from MARSIS data: A new approach

We describe a new implementation of the Contrast Method (CM) algorithm (Picardi and Sorge, 2000; Ilyushin Ya and Kunitsyn, 2004; Cartacci et al., 2013) used to correct the phase distortion of the echoes recorded by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) (Picardi et al., 2005; Jordan et al., 2009) in its subsurface mode.

The New CM is designed following an improved approach which allows not only to perform its original task but also to estimate the Total Electron Content (TEC) of the Mars ionosphere with a better accuracy respect to the past (Cartacci et al., 2013; Cartacci et al., 2017), in the nightside when the transmitted frequency is close to the ionosphere plasma frequency as well as in the dayside, thanks to a lesser use of theoretical approximations in the method development.

Moreover, taking advantage of almost 16 years of MARSIS operations, corresponding to about 8700 orbits, we present an improved global map of the night side TEC variations due to the interaction with the Mars crustal magnetic field (Safaeinili et al., 2007; Cartacci et al., 2013).

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.