【6h】

Breadboarding activities of the TROPOMI-SWIR module

机译:TROPOMI-SWIR模块的实验板活动

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The TROPOMI instrument concept is part of the TRAQ mission proposal to ESA in response to the Call for Ideas in 2005. TRAQ (TRopospheric composition and Air Quality) has been accepted for a further pre-phase A study for the next Earth Explorer core Mission. A very similar instrument has been proposed for the CAMEO platform to the US National Research Council decadal study, which has also been accepted for further study. TROPOMI is a nadir-viewing grating-based imaging spectrometer using the Dutch OMI and SCIAMACHY heritage. It includes an UV-VIS-NIR module that consists of three UV-VIS channels continuously covering the 270-490 nm range to determine O_3, NO_2, HCHO, SO_2, aerosols and a NIR-channel covering 710-775 nm for cloud detection and information on the aerosol height distribution using the oxygen A band. TROPOMI also includes a SWIR module covering 2305-2385 nm that mainly focuses on determination of CO and CH_4 total columns. All species are measured with sensitivity down to the Earth's surface, thus addressing issues of anthropogenic emissions and their impact on air quality and climate. In the TRAQ mission, unique diurnal time sampling with up to 5 daytime observations over mid-latitude regions (Europe, North-America, China) is foreseen by using a non-sun-synchronous, medium-inclination drifting orbit and a 2600 km wide observational swath.Several more general aspects related to the TROPOMI instrument are discussed in a separate paper in this conference. This paper focuses on the development of the SWIR module. A breadboard model (BBM) has been designed and constructed which is as much as possible functionally flight representative. Critical technologies to be demonstrated with the BBM are the SWIR HgCdTe-based 2D focal plane array, the on-board SWIR calibration LED, and in particular, the SRON/TNO developed silicon-based immersed grating that allows a hugely reduced instrument volume. In the presentation the results of a performance analysis of the TROPOMI-SWIR channel will be discussed, as well as results of the detector characterization program on a representative off-the-shelf FPA, and details of the photolithographic production of the immersed grating.
机译:TROPOMI仪器的概念是为响应2005年“征集想法”而向欧空局提出的TRAQ任务建议的一部分。TRAQ(对流层成分和空气质量)已被接受用于下一地球探索者核心任务的进一步的前期A研究。已为CAMEO平台提出了与美国国家研究委员会十年研究非常相似的仪器,该仪器也被接受用于进一步研究。 TROPOMI是使用荷兰OMI和SCIAMACHY传统技术的基于底视观察光栅的成像光谱仪。它包括一个UV-VIS-NIR模块,该模块由三个连续覆盖270-490 nm范围的UV-VIS通道以确定O_3,NO_2,HCHO,SO_2,气溶胶和一个覆盖710-775 nm的NIR通道用于云探测和检测。氧气A波段的气溶胶高度分布信息。 TROPOMI还包括一个覆盖2305-2385 nm的SWIR模块,主要用于确定CO和CH_4总色谱柱。对所有物种的敏感度一直到地球表面,以解决人为排放问题及其对空气质量和气候的影响。在TRAQ任务中,通过使用非太阳同步,中倾角漂移轨道和2600 km宽的轨道,可以预见中纬度地区(欧洲,北美,中国)的独特的昼间时间采样,最多可进行5个白天的观测在本次会议的另一篇论文中讨论了与TROPOMI仪器有关的几个更一般的方面。本文着重于SWIR模块的开发。设计并构造了面包板模型(BBM),该模型在功能上尽可能代表飞行。 BBM所展示的关键技术是基于SWIR HgCdTe的2D焦平面阵列,板载SWIR校准LED,特别是SRON / TNO开发的基于硅的浸没式光栅,可大大减少仪器的体积。在演示中,将讨论TROPOMI-SWIR通道性能分析的结果,以及具有代表性的现成FPA上的检测器表征程序的结果,以及沉浸式光栅的光刻生产细节。

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