Calibration OGSE for a multichannel radiometer for Mars atmosphere studies

Jiménez, Juan J.; González-Guerrero, Miguel; Apéstigue, Víctor; Álvarez, F.; Fernández, J. M.; Fernán, A. A.; Arruego, Ignacio; Karafolas, Nikos; Cugny, Bruno; Sodnik, Zoran

doi:10.1117/12.2296142

Cited by 3 publications

(5 citation statements)

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“…Specially, if the Sun is in a low relative zenith angle, the direct, circumsolar, and most of the diffuse light will actually be received with a responsivity very close to the nominal (normal incidence) value, making the estimation of the absolute irradiance a very straightforward process. Figure 14, extracted form Jiménez et al (2016), shows this angular dependence: depends on the angle of incidence of the light. For that reason the "equivalent irradiance" of that noise depends on the angle we may suppose in a hypothetical scenario.…”

Section: Sismentioning

confidence: 90%

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The DREAMS Experiment Onboard the Schiaparelli Module of the ExoMars 2016 Mission: Design, Performances and Expected Results

et al. 2018

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The first of the two missions foreseen in the ExoMars program was successfully launched on th March 2016. It included the Trace Gas Orbiter and the Schiaparelli Entry descent and landing Demonstrator Module. Schiaparelli hosted the DREAMS instrument suite that was the only scientific payload designed to operate after the touchdown. DREAMS is a meteorological station with the capability of measuring the electric properties of the Martian atmosphere. It was a completely autonomous instrument, relying on its internal battery for the power supply. Even with low resources (mass, energy), DREAMS would be able to perform novel measurements on Mars (atmospheric electric field) and further our understanding of the Martian environment, including the dust cycle. DREAMS sensors were designed to operate in a very dusty environment, because it was designed to land on Mars during the dust storm season (October 2016 in Meridiani Planum). Unfortunately, the Schiaparelli module failed part of the descent and the landing and crashed onto the surface of Mars. Nevertheless, several seconds before the crash, the module central computer switched the DREAMS instrument on, and sent back housekeeping data indicating that the DREAMS sensors were performing nominally. This article describes the instrument in terms of scientific goals, design, working principle and performances, as well as the results of calibration and field tests. The spare model is mature and available to fly in a future mission.

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Section: Sismentioning

confidence: 90%

“…where the responsivity is less than 5% of that at normal incidence. Details can be found in Jiménez et al (2016).…”

Section: Sismentioning

confidence: 99%

The DREAMS Experiment Onboard the Schiaparelli Module of the ExoMars 2016 Mission: Design, Performances and Expected Results

et al. 2018

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“…The normal incidence responsivity, TRF and spectral response are displayed in Figure 3, whereas the ARF for both the top and lateral detectors is shown in Figure 4. Reference (Jiménez et al, 2016) provides further details on the calibration process. As shown in Figure 4, the FoV of all the detectors extends to negative elevation angles (4.2% of the Top detector ARF lies below the horizon; 3.5% for the lateral ones).…”

Section: Calibrationmentioning

confidence: 99%

DREAMS-SIS: The Solar Irradiance Sensor on-board the ExoMars 2016 lander

Arruego

Apéstigue

Jiménez-Martín

et al. 2017

Advances in Space Research

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“…The ARF has been measured for each channel in the laboratory. The angular calibration consists on automatic 2-D angular sample of the solar angles positions (azimuth and zenith angles) under a reference light source [8]. Fig.…”

Section: A Skyline Mapmentioning

confidence: 99%