ArielRad, the Ariel radiometric model, is a simulator developed to address the challenges in optimising the space mission science payload and to demonstrate its compliance with the performance requirements. Ariel , the Atmospheric Remote-Sensing Infrared Exoplanet Large-survey, has been selected by ESA as the M4 mission in the Cosmic Vision programme and, during its 4 years primary operation, will provide the first unbiased spectroscopic survey of a large and diverse sample of transiting exoplanet atmospheres. To allow for an accurate study of the mission, ArielRad uses a physically motivated noise model to estimate contributions arising from stationary processes, and includes margins for correlated and time-dependent noise sources. We show that the measurement uncertainties are dominated by the photon statistic, and that an observing programme with about 1000 exoplanetary targets can be completed during the primary mission lifetime.

中文翻译：

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ArielRad：Ariel 辐射模型

ArielRad 是 Ariel 辐射测量模型，是一种模拟器，旨在解决优化空间任务科学有效载荷方面的挑战并证明其符合性能要求。大气遥感红外系外行星大调查 Ariel 已被欧空局选为宇宙视觉计划中的 M4 任务，在其 4 年的主要运行期间，将提供对大量不同样本的首次无偏光谱调查。过境系外行星大气。为了对任务进行准确研究，ArielRad 使用物理激励的噪声模型来估计静止过程产生的贡献，并包括相关和时间相关噪声源的余量。我们表明测量不确定性主要由光子统计量决定，