首页> 外文会议>Proceedings of the 5th international conference on space optics (ICSO 2004) >LOW-COST THERMAL-IR IMAGER FOR AN EARTH OBSERVATION MICROSATELLITE
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LOW-COST THERMAL-IR IMAGER FOR AN EARTH OBSERVATION MICROSATELLITE

机译:用于地球观测微卫星的低成本热红外成像仪

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A new class of thermal infrared (TIR) EarthrnObservation (EO) data will become available with thernflight of miniature TIR EO instruments in a multiplernmicro-satellite constellation. This data set will providerna unique service for those wishing to analyse trends orrnrapidly detect anomalous changes in the TIRrncharacteristics of the Earth’s surface or atmospherern(e.g. fire detection). Following a preliminary study ofrnpotential mission applications, uncooled commercialoff-rnthe-shelf (COTS) technology was selected to formrnthe basis of a low-cost, compact instrument capable ofrncomplementing existing visible and near IR EOrncapabilities on a sub-100kg Surrey micro-satellite. Thernpreliminary 2-3 kg instrument concept has beenrndesigned to yield a 325 m ground sample distance overrna 200 km swath width from a constellation altitude ofrn700 km. The radiometric performance, enhanced withrntime-delayed integration (TDI), is expected to yield arnNETD less than 0.5 K for a 300 K ground scene.rnFabrication and characterization of a space-readyrninstrument is planned for late 2004.
机译:随着微型TIR EO仪器在多颗微卫星星座中的飞行,新型的热红外(TIR)地球观测(EO)数据将变得可用。该数据集将为那些希望分析趋势或迅速检测出地球表面或大气层的TIR特性异常的人员(例如火灾探测)提供独特的服务。在对潜在任务应用进行了初步研究之后,选择了非冷却商用现货(COTS)技术来构成低成本,紧凑型仪器的基础,该仪器能够在100公斤以下的萨里(Surrey)微卫星上补充现有的可见光和近红外EO能力。初步设计了2-3千克的仪器概念,以从rn 700 km的星座高度产生325 m的地面样本距离200 km幅宽。辐射增强的时间延迟集成(TDI)性能有望在300 K的地面场景下产生小于0.5 K的arnNETD。rn计划在2004年下半年制造和表征太空就绪仪器。

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