We consider the inverse problem of recovering the spherically symmetric sound speed, density and attenuation in the Sun from the observations of the acoustic field randomly excited by turbulent convection. We show that observations at two heights above the photosphere and at two frequencies above the acoustic cutoff frequency uniquely determine the solar parameters. We also present numerical simulations which confirm this theoretical result.

中文翻译：

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日震学被动逆问题的全局唯一性

我们考虑了从湍流对流随机激发的声场的观测中恢复太阳中球对称声速、密度和衰减的逆问题。我们表明，在光球层上方两个高度和声学截止频率上方两个频率处的观测唯一地确定了太阳参数。我们还提供了证实这一理论结果的数值模拟。