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Data handling electronics architecture and design for 450-nm to 2.35-um hyperspectral imager

机译:450nm至2.35um高光谱成像仪的数据处理电子架构和设计

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Abstract: Undertaken by the European Space Agency (ESA-ESTEC), HIRIS (high resolution imaging spectrometer) instrument study program includes signal processing and instrument overall data handling design concept. HIRIS is an hyperspectral imager to be implemented on a low earth orbit type satellite. The instrument is a pushbroom operating around 800 km altitude sun-synchronous orbit with 40 m sub satellite spatial sampling, 30 km swath variable by plus or minus 30 degrees and a spectral coverage from 450 nm to 2350 nm at 10 nm average spectral sampling. One of the major critical areas is therefore to develop, manufacture and integrate a full detection chain, including front-end electronics, preamplifiers and video chains (analog processing), and radiometric correction devices and compression algorithm implementation (digital processing). Taking into account imaging mission and system constraints, a data handling architecture has been selected, based on the video processing standardization, what ever the focal plane design is. The off- line processing architecture leads to an optimization of the budgets while integrating the overall digital processing imposed by mission performances fulfillment. With an input data flow near 320 Mbps, the overall data handling delivers through the output formatter a 100 Mbps data flow to the ground after having performed the required on board processing (gain correction, offset correction, needed compression and encoding implementation). !1
机译:摘要:由欧洲航天局(ESA-ESTEC)承办的HIRIS(高分辨率成像光谱仪)仪器研究计划包括信号处理和仪器整体数据处理设计概念。 HIRIS是将在低地球轨道型卫星上实现的高光谱成像仪。该仪器是一个推扫帚,在约800 km的太阳同步轨道上运行,具有40 m的子卫星空间采样,30 km的条带变化(正负30度),并且在10 nm的平均光谱采样范围内的光谱覆盖范围为450 nm至2350 nm。因此,主要的关键领域之一是开发,制造和集成完整的检测链,包括前端电子设备,前置放大器和视频链(模拟处理)以及辐射校正设备和压缩算法的实现(数字处理)。考虑到成像任务和系统限制,根据视频处理标准化,已经选择了焦平面设计是什么的数据处理体系结构。离线处理体系结构可优化预算,同时整合由任务执行所带来的整体数字处理。在输入数据流接近320 Mbps的情况下,整体数据处理在执行了所需的板上处理(增益校正,偏移校正,所需的压缩和编码实现)之后,通过输出格式化程序将100 Mbps数据流传输到地面。 !1

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