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A light compact and rugged IR sensor for space applications
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Paper Abstract

The Short and Mid Wave InfraRed (S-MWIR) rugged active detection system has been designed to be operated in the worst conditions with very low Size Weight and Power (SWaP) factor. The detection system is based on a single uncooled detector device implementing a Lead Sulphide (PbS) (SWIR) and Lead Selenide (PbSe) (MWIR) plate cells on the same package and an emitter based on a combination of standard silicon materials with Nano Amorphous Carbon (NAC) membrane. The data acquisition and processing have been configured to handle very low signal values and important noise in the ambient. The detection system is based on a Lock-In Amplification tuned on 10Hz frequency to reduce the noise effect. The low operation frequency reduces the requirements on IR source and sampling electronics. The IR detectors and source has been instrumented with thermistors and the responsivity of the system has been characterized for non-thermal controlled operation. The characterized responsivity and the instantaneous temperature shall be considered on the data retrieval. The detection system has been qualified for very tough environment as very low temperature (-135°C) and relatively high temperatures (70°C) for a year continuous operation, high vacuum (10-6 mbar), high mechanical vibration and shock and high radiation levels. The S-MWIR detection system has been implemented on the Dust Sensor for the ExoMars’20 mission for operation from 10°C to -90°C with two detector systems forward and backward for calculation the in-situ dust concentration on Mars surface.

Paper Details

Date Published: 9 September 2019
PDF: 8 pages
Proc. SPIE 11129, Infrared Sensors, Devices, and Applications IX, 1112907 (9 September 2019); doi: 10.1117/12.2529846
Show Author Affiliations
Andres Russu, Univ. Carlos III de Madrid (Spain)
Antonio J. de Castro, Univ. Carlos III de Madrid (Spain)
Francisco Cortes, Univ. Carlos III de Madrid (Spain)
Celia López-Ongil, Univ. Carlos III de Madrid (Spain)
Marta Portela, Univ. Carlos III de Madrid (Spain)
Ernesto Garcia, Univ. Carlos III de Madrid (Spain)
José A. Miranda, Univ. Carlos III de Madrid (Spain)
Manuel F. Canabal, Univ. Carlos III de Madrid (Spain)
Ignacio Arruego, INTA Instituto Nacional de Técnica Aeroespacial (Spain)
Javier Martinez-Oter, Ingenieria de Sistemas para la Defensa de España (ISDEFE) (Spain)
Fernando López, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 11129:
Infrared Sensors, Devices, and Applications IX
Paul D. LeVan; Priyalal Wijewarnasuriya; Ashok K. Sood, Editor(s)

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