The first of the two missions foreseen in the ExoMars program was successfully launched on 14th March 2016. It included the Trace Gas Orbiter and the Schiaparelli Entry descent and landing Demonstrator Module. Schiaparelli hosted the DREAMS instrument suite that was the only scientific payload designed to operate after the touchdown. DREAMS is a meteorological station with the capability of measuring the electric properties of the Martian atmosphere. It was a completely autonomous instrument, relying on its internal battery for the power supply. Even with low resources (mass, energy), DREAMS would be able to perform novel measurements on Mars (atmospheric electric field) and further our understanding of the Martian environment, including the dust cycle. DREAMS sensors were designed to operate in a very dusty environment, because the experiment was designed to operate on Mars during the dust storm season (October 2016 in Meridiani Planum). Unfortunately, the Schiaparelli module failed part of the descent and the landing and crashed onto the surface of Mars. Nevertheless, several seconds before the crash, the module central computer switched the DREAMS instrument on, and sent back housekeeping data indicating that the DREAMS sensors were performing nominally. This article describes the instrument in terms of scientific goals, design, working principle and performances, as well as the results of calibration and field tests. The spare model is mature and available to fly in a future mission.

中文翻译：

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ExoMars 2016 任务的 Schiaparelli 模块上的梦想实验：设计、性能和预期结果

ExoMars 计划中预见的两个任务中的第一个于 2016 年 3 月 14 日成功发射。它包括微量气体轨道飞行器和 Schiaparelli 入口下降和着陆演示模块。Schiaparelli 主持了 DREAMS 仪器套件，这是设计用于在着陆后运行的唯一科学有效载荷。DREAMS 是一个能够测量火星大气电特性的气象站。这是一个完全自主的仪器，依靠内部电池供电。即使资源（质量、能量）较低，DREAMS 也能够对火星（大气电场）进行新的测量，并进一步了解火星环境，包括尘埃循环。DREAMS 传感器设计用于在非常多尘的环境中工作，因为该实验旨在在沙尘暴季节（2016 年 10 月，Meridiani Planum）期间在火星上进行。不幸的是，夏帕瑞丽模块在下降和着陆部分失败并坠毁在火星表面。尽管如此，在坠机前几秒钟，模块中央计算机打开了 DREAMS 仪器，并发回了内务数据，表明 DREAMS 传感器正常运行。本文从科学目标、设计、工作原理和性能，以及校准和现场测试的结果方面介绍了该仪器。备用模型已经成熟，可以在未来的任务中飞行。Schiaparelli 模块在下降和着陆的部分失败并坠毁在火星表面。尽管如此，在坠机前几秒钟，模块中央计算机打开了 DREAMS 仪器，并发回了内务数据，表明 DREAMS 传感器正常运行。本文从科学目标、设计、工作原理和性能，以及校准和现场测试的结果方面介绍了该仪器。备用模型已经成熟，可以在未来的任务中飞行。Schiaparelli 模块在下降和着陆的部分失败并坠毁在火星表面。尽管如此，在坠机前几秒钟，模块中央计算机打开了 DREAMS 仪器，并发回了内务数据，表明 DREAMS 传感器正常运行。本文从科学目标、设计、工作原理和性能，以及校准和现场测试的结果方面介绍了该仪器。备用模型已经成熟，可以在未来的任务中飞行。工作原理和性能，以及校准和现场测试的结果。备用模型已经成熟，可以在未来的任务中飞行。工作原理和性能，以及校准和现场测试的结果。备用模型已经成熟，可以在未来的任务中飞行。