Implementation of the Earth-based planetary radio occultation inversion technique
Implementation of the Earth-based planetary radio occultation inversion technique
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DOI：
10.1007/s11433-011-4247-7
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
Sujun Zhang;J. Ping;Tingting Han;Xueyu Mao;Z. Hong
中科院分区：
文献类型：
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作者：
Sujun Zhang;J. Ping;Tingting Han;Xueyu Mao;Z. Hong
行星射电掩星技术是最早提出并实现的探测行星大气层的方法之一，几乎所有的深空行星探测器都进行了这一技术的研究。本文介绍了SHAO行星掩星观测处理系统（SPOPs）的原理、模块、反演结果及初步分析。利用欧空局PSA和NASA PDS提供的火星快车无线电掩星实验开环和闭环多普勒残差数据，成功地反演了火星大气温度、压力、分子数密度剖面和电离层电子密度剖面，并通过欧空局MaRS组发布的射电科学级04产品进行了验证。该系统还可以处理其他行星及其天然卫星的大气无线电掩星观测。行星无线电掩星技术的实施对我国萤火一号火星探测工程以及未来的行星探测任务具有重要意义。
The planetary radio occultation technique is one of the earliest suggested and achieved methods to detect the planetary atmosphere, and has been conducted by almost every deep space planetary probe. The principles, modules, inversion results and primary analysis of the SHAO Planetary Occultation observation Processing system (SPOPs) are presented in this paper. Utilizing open-loop and closed-loop Doppler residual data of the Mars Express radio occultation experiment provided by ESA PSA and NASA PDS, the temperature, pressure, molecular number density profiles of Martian atmosphere and electron density profiles of the ionosphere are successfully retrieved, and the results are validated by the released radio science level 04 products of the ESA MaRS group. This system can also process the atmosphere radio occultation observations of other planets and theirs natural satellites. The implementation of the planetary radio occultation technique is of significance to China’s YH-1 Mars exploration project, as well as for future planetary exploration missions from China.