CHIME’s hyperspectral imaging spectrometer design result from phase A/B1

P. Buschkamp; B. Sang; P. Peacocke; S. Pieraccini; M. J. Geiss; C. Roth; V. Moreau; B. Borguet; L. Maresi; M. Rast; J. Nieke

doi:10.1117/12.2599428

11 June 2021 CHIME’s hyperspectral imaging spectrometer design result from phase A/B1

P. Buschkamp, B. Sang, P. Peacocke, S. Pieraccini, M. J. Geiss, C. Roth, V. Moreau, B. Borguet, L. Maresi, M. Rast, J. Nieke

Author Affiliations +

Proceedings Volume 11852, International Conference on Space Optics — ICSO 2020; 118522K (2021) https://doi.org/10.1117/12.2599428
Event: International Conference on Space Optics — ICSO 2021, 2021, Online Only

Abstract

CHIME, the Copernicus Hyperspectral Imaging Mission for the Environment, is one of the six High Priority Candidate Missions (HPCM) of the evolution in the Copernicus Space Component (CSC) foreseen in the mid-2020s that is proposed for further analysis. In this paper we summarize the results as retrieved by OHB (D) as part of the Phase A/B1. The contract was kicked off in 2018 and concluded in 2020 after finalisation of the Pre-development activities. The proposed instrument is a hyperspectral imager instrument with reflective telescope and grating-based spectrometer. The selected orbit is in the range of 625 ± 30 km, LTDN 10:45 – 11:15 am with a repeat cycle of 20 to 25 days for a single satellite and 10-12.5 days revisit for 2 satellites. The payload of each satellite records at a Spatial Sampling Distance (SSD) of 30m the full spectral range from 400 to 2500nm at a Spectral Sampling interval < 10nm with Low Keystone/Smile. On the front end a high performance TMA with wide-band coated optics collects the light from ground and feeds it to a highly linear almost distortion free spectrometer assembly attaining very good spectral stability. All units are integrated in an optical bench structure that offers excellent AIT access and provides a highly stable LOS. The electro-optical backend contains low-noise cold MCT detectors creating margin in the predicted NEDL performance. The instrument can be calibrated via on-board devices or using reference targets outside the spacecraft. We present the functional decomposition and the physical instrument architecture: the optical design and opto-mechanical layout, the electro-optical imaging chain ant thermal control system.

Conference Presentation

Citation Download Citation

P. Buschkamp, B. Sang, P. Peacocke, S. Pieraccini, M. J. Geiss, C. Roth, V. Moreau, B. Borguet, L. Maresi, M. Rast, and J. Nieke "CHIME’s hyperspectral imaging spectrometer design result from phase A/B1", Proc. SPIE 11852, International Conference on Space Optics — ICSO 2020, 118522K (11 June 2021); https://doi.org/10.1117/12.2599428

ACCESS THE FULL ARTICLE

PROCEEDINGS
15 PAGES + PRESENTATION

DOWNLOAD PAPER SAVE TO MY LIBRARY

WATCH
PRESENTATION

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

Subscribe to Digital Library

Receive Erratum Email Alert

Keywords/Phrases

Search In:

Publication Years