The radiometric environment for Mars limb observations by the Mars Sample Return Earth Return Orbiter

被引:1
作者
Slipski, Marek [1 ]
Kleinbohl, Armin [1 ]
Tirsch, Daniela [2 ]
Kminek, Gerhard [3 ]
Jonniaux, Gregory [4 ]
Maattanen, Anni [5 ]
Nicholas, Austin [1 ]
Montmessin, Franck [6 ]
Madsen, Soren N. [1 ]
Abrahamson, Matthew [1 ]
Sanchez-Gestido, Manuel [3 ]
Mischna, Michael A. [1 ]
Murray, Neil Paul [3 ]
Wolff, Michael J. [7 ]
Blanc-Paques, Pierre [4 ]
Cipriani, Fabrice [3 ]
Wilson, Colin F. [3 ]
Titov, Dmitri [8 ]
Zurek, Richard
机构
[1] CALTECH, Jet Prop Lab, 4800 Oak Grove Rd, Pasadena, CA 91101 USA
[2] German Aerosp Ctr DLR, Berlin, Germany
[3] European Space Agcy, Noordwijk, Netherlands
[4] Airbus Def & Space, Toulouse, France
[5] UVSQ Univ Paris Saclay, Sorbonne Univ, CNRS, LATMOS,IPSL, Paris, France
[6] Sorbonne Univ, UVSQ Univ Paris Saclay, CNRS, LATMOS,IPSL, Guyancourt, France
[7] Space Sci Inst, Boulder, CO 80301 USA
[8] Leiden Univ, Leiden, Netherlands
基金
美国国家航空航天局;
关键词
Mars sample return; Mars atmosphere; Atmospheric radiance; CLIMATE SOUNDER; CLOUDS; DUST; ATMOSPHERE; MESOSPHERE; HAZES;
D O I
10.1016/j.asr.2023.07.019
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
After launching from the martian surface via the Mars Ascent Vehicle (MAV), the MAV and the Orbiting Sample (OS) capsule con-taining the samples collected on Mars by the Perseverance rover are to be identified by the Narrow Angle Camera (NAC) on the Earth Return Orbiter (ERO) spacecraft in order to determine the exact orbit of the capsule before rendezvous. To ensure detection of the OS, noise and straylight contributions to the NAC must be well characterized. Here, we assess the radiometric environment at Mars likely to be encountered by the NAC-from the surface through the middle atmosphere-using the High Resolution Stereo Camera (HRSC) onboard Mars Express (MEx) and the Mars Climate Sounder (MCS) onboard the Mars Reconnaissance Orbiter (MRO). The results show that the radiance values in general tend to increase as phase angle increases, as the season progresses from Ls = 60 degrees to Ls = 230 degrees, and as altitude decreases. We compare HRSC and MCS profiles where observing conditions were similar and find good agree-ment. At specific latitudes, high-altitude aerosols are present in 1-5% of observations and significantly increase the worst-case radiance contribution above 50 km. We construct envelope profiles from the maximum radiances at 5 km intervals from 0 to 90 km that provide important input for straylight calculations of the NAC and for the validation of models that may be used as input for straylight calculations.(c) 2023 COSPAR. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:4048 / 4063
页数:16
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