Appl Opt. 2022 Apr 10;61(11):2967-2974. doi: 10.1364/AO.447680.
The SuperCam remote sensing instrument on NASA's Perseverance rover is capable of four spectroscopic techniques, remote micro-imaging, and audio recording. These analytical techniques provide details of the chemistry and mineralogy of the rocks and soils probed in the Jezero Crater on Mars. Here we present the methods used for optical calibration of the three spectrometers covering the 243-853 nm range used by three of the four spectroscopic techniques. We derive the instrument optical response, which characterizes the instrument sensitivity to incident radiation as a function of a wavelength. The instrument optical response function derived here is an essential step in the interpretation of the spectra returned by SuperCam as it converts the observed spectra, reported by the instrument as "digital counts" from an analog to digital converter, into physical values of spectral radiance.
美国宇航局毅力号火星车上的 SuperCam 远程传感仪器能够使用四种光谱技术、远程微观成像和音频记录。这些分析技术提供了火星杰泽罗陨石坑中探测到的岩石和土壤的化学和矿物学的详细信息。在这里，我们介绍了用于校准覆盖四个光谱技术中三个光谱技术所用的 243-853nm 范围的三个光谱仪的光学方法。我们得出了仪器的光学响应，它描述了仪器对入射辐射的灵敏度随波长的变化。这里推导的仪器光学响应函数是解释 SuperCam 返回光谱的重要步骤，因为它将仪器报告的“数字计数”从模拟转换为数字转换器转换为光谱辐亮度的物理值。
