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首页> 外文会议>Sensors, systems, and next-generation satellites XIII >Development of a Micro-Satellite Compatible FTS Sounder for Sun- Occultation Measurements
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Development of a Micro-Satellite Compatible FTS Sounder for Sun- Occultation Measurements

机译：开发了用于太阳掩星测量的微卫星兼容FTS测深仪

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The SciSat/ACE mission provided, and still provides, high quality and high spectral resolution measurements of the atmosphere with a FTS sounder in sun-occultation configuration. Based on the comprehensive results and models of SciSat/ACE it is foreseen that most of the desired information can also be retrieved from lower spectral resolution measurements with higher signal-to-noise ratio (SNR) and appropriate data treatment. With the Canadian Space Agency under the Space Technologies Development Program, ABB Analytical developed a small size sun-occultation sounder compatible with a micro-satellite platform that has identical throughput, spectral bandwidth and vertical resolution as ACE. The spectral resolution is decreased by a factor 25 (0.6 cm~(-1) instead of 0.024 cm~(-1) for ACE) whereas the SNR performance is highly increased with an equal factor (target of 2500 instead of 100 for ACE over most of the spectral bandwidth between 750 and 4000 cm~(-1)).A prototype of the sun-occultation sounder was built, tested under various thermal conditions and subjected to vibrations similar to those expected at launch. An outdoor experiment was also conducted to test the instrument in sun-occultation conditions. The good behavior of the instrument indicates interesting opportunities for such small footprint sounder on a low-cost micro-satellite mission and potentially good earth coverage if several of such instruments are used in coordination. Depending on the scientific needs, it is possible to adapt the proposed instrument to increase the vertical resolution and/or to extend the measurements on lower altitudes due to the higher SNR performances.
机译：SciSat / ACE任务使用太阳掩蔽配置的FTS测深仪，可以提供，并且仍然可以提供高质量和高光谱分辨率的大气测量。根据SciSat / ACE的综合结果和模型，可以预见到，大多数所需信息也可以从具有较高信噪比（SNR）和适当数据处理的较低光谱分辨率测量中获取。在空间技术开发计划下，与加拿大航天局合作，ABB Analytical开发了一种与微卫星平台兼容的小型太阳掩星探测器，该平台具有与ACE相同的吞吐量，频谱带宽和垂直分辨率。频谱分辨率降低了25倍（ACE降低了0.6 cm〜（-1）而不是0.024 cm〜（-1）），而SNR性能以相同的因子大大提高了（ACE的目标是2500而不是100）大部分的光谱带宽在750到4000 cm〜（-1）之间）。太阳掩星测深仪的原型被制造出来，在各种热条件下进行了测试，并受到与发射时预期的相似的振动。还进行了室外实验，以在阳光遮蔽条件下测试仪器。该仪器的良好性能表明，在低成本微卫星任务中，这种小尺寸探测仪具有令人感兴趣的机会，而且如果将几种此类仪器配合使用，则可能具有良好的地球覆盖范围。根据科学需求，由于信噪比（SNR）性能较高，有可能使所提出的仪器适应更高的垂直分辨率和/或在更低的海拔高度扩展测量范围。

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