Martian material composition testing system and method based on active-passive combined spectroscopy technology

Abstract

The invention discloses a Mars material component analysis system and method using active and passive combined spectrum technology. The system includes optical head, short-wave spectrometer, medium-wave spectrometer, long-wave spectrometer, infrared AOTF spectrometer, calibration board, two-dimensional pointing mirror, pointing mirror control cable and load controller. Based on this system, active laser spectroscopy and passive infrared spectroscopy can be combined to realize the joint detection of Martian atoms, symmetric molecules, and asymmetric molecules. The active LIBS spectrum detection of the invention can realize the qualitative and quantitative analysis of material atoms, the active time-domain laser Raman detection can realize the qualitative and quantitative analysis of material symmetrical molecules, and the passive infrared spectrum detection can realize the qualitative and quantitative analysis of material asymmetric molecules. The combination of active and passive spectroscopy simultaneously realizes the detection of material atoms, symmetric molecules, and asymmetric molecules, and then realizes the classification and identification of Martian rocks, soil, minerals, etc. The invention expands the analysis range of Martian substances and maintains the compactness and convenience of the system.

Description

technical field [0001] The invention relates to a laser spectrum detection method, in particular to a remote material composition analysis system and method using active and passive combined spectrum technology, which is suitable for the analysis of material composition on the surface of Mars and belongs to the field of photoelectric detection. Background technique [0002] In the analysis of the mineral composition of the surface of Mars in deep space exploration, since the manned Mars landing technology is not yet mature, it is necessary to use an unmanned remote automatic detection method. Compared with other remote material composition detection methods, laser spectroscopy detection methods have the advantages of no sample preparation, fast analysis speed, multi-element analysis and trace element detection at the same time, and can remove the dust layer on the surface of the sample and go deep into the sample for measurement, etc. Has been or will be applied. [0003] I...

AI Technical Summary

Problems solved by technology

However, some key technical problems need to be solved. For example, conventional laser Raman uses a continuous narrow linewidth laser, while LIBS uses a narrow pulse low repetition frequency laser. In order to solve the compactness and convenience of the detection device, the problem of how to multiplex the light source and detector; and Detection of pulsed laser Raman signals with time-domain resolution and timing assignment of two kinds of spectral signals; and multiplexing of active and passive spectral light paths, etc.

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