Design and preliminary verification of asteroid thermal emission spectrometer for Tianwen-2
热辐射光谱仪作为我国首个小天体探测任务(天问二号)的科学载荷之一,主要工作为获取近地小行星2016 HO3和主带彗星311P的表面热辐射光谱,研究表面的热辐射特性和矿物质分布;获取小行星表面热物理参数用于热模型反演,支持采样任务。光谱仪的谱段范围覆盖5 - 50 μm,光谱分辨率为9.79 cm-1,信噪比优于326 (7.5 - 35 μm @325 K),角分辨率为3.28 mrad × 3.29 mrad,重量小于10 kg。采用双角镜、四端口、时间调制型干涉分光技术,创新性地利用目标和参考两路输入的光学相减,有效提升探测灵敏度和动态范围。本文介绍了热辐射光谱仪的工作原理、技术特点以及地面测试与初步验证情况,可为同类载荷研制提供参考。
Authors
- Zhaocong Huang (ORCID: https://orcid.org/0000-0002-0190-2810)
- Dazhou Xiao
- Lingwei Hou (ORCID: https://orcid.org/0000-0002-2425-2769)
- Xin Zhao (ORCID: https://orcid.org/0000-0003-0631-4628)
- Yinlong Li (ORCID: https://orcid.org/0000-0002-8864-1712)
- Jiahang Liu
- Ya Zhai (ORCID: https://orcid.org/0000-0002-9006-9575)
- Gang Huang
- Bin Liu
- C. Patrick Yue (ORCID: https://orcid.org/0000-0002-8725-8148)
- Maolin Zhai (ORCID: https://orcid.org/0000-0002-6038-3512)
- Yang Zhang (ORCID: https://orcid.org/0000-0002-6019-8229)
- Bin Li (ORCID: https://orcid.org/0000-0002-8979-610X)
- Ke Jin (ORCID: https://orcid.org/0000-0001-6513-3996)
- Weigang Wang (ORCID: https://orcid.org/0000-0001-6529-1054)
- Ning An (ORCID: https://orcid.org/0009-0005-4228-8203)
- Wang-Rong Yang (ORCID: https://orcid.org/0000-0003-3470-3639)
- Dongnan Chi
Publication Details
- Journal
- Zhongguo kexue. Wulixue Lixue Tianwenxue
- Published
- 2025-05-07
- DOI
- https://doi.org/10.1360/sspma-2025-0020
- Citations
- 1
- Primary Topic
- Astro and Planetary Science
- Type
- article
- Field-Weighted Citation Impact
- 1.15