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Article Dans Une Revue CEAS Space Journal Année : 2019

NanoCarb hyperspectral sensor: on performance optimization and analysis for greenhouse gas monitoring from a constellation of small satellites

Résumé

NanoCarb is an innovative Fourier-transform imaging spectrometer dedicated to the measurement of CO 2 and CH 4. Both its unusual optical principle and sampling strategy allow to reach a compact design, ideal for small satellite constellation as investigated by the European project SCARBO. The NanoCarb performance assessment as well as a proof of concept is required in this framework. We have developed a design strategy to optimize the performances. We demonstrate the potential of the concept through an estimation of the sensitivity, compliant with the space mission target. We also present a preliminary mitigation of the bias induced by water on CO 2 and CH 4 retrieval, illustrating the efficiency and the flexibility of the NanoCarb partial interferogram sampling technique. The presented design reaches a sub-ppm random error for CO 2 and sub-10 ppb random error for CH 4 , considering 128 km swath and 2 by 2 km 2 ground resolution. Design optimization and more systematic performances are discussed.
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Dates et versions

hal-02507490 , version 1 (13-03-2020)

Identifiants

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Silvère Gousset, Laurence Croize, Etienne Le Coarer, Yann Ferrec, Juana Rodrigo-Rodrigo, et al.. NanoCarb hyperspectral sensor: on performance optimization and analysis for greenhouse gas monitoring from a constellation of small satellites. CEAS Space Journal, 2019, 11, pp.507-524. ⟨10.1007/s12567-019-00273-9⟩. ⟨hal-02507490⟩
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