Near infrared imager for spectral and polarization analysis of planetary surfaces

D. A. Belyaev; K. B. Yushkov; S. P. Anikin; N. A. Evdokimova; S. A. Potanin; Y. S. Dobrolenskiy; O. I. Korablev; V. Ya Molchanov; S. N. Mantsevich

doi:10.1117/12.2277917

29 September 2017 Near infrared imager for spectral and polarization analysis of planetary surfaces

D. A. Belyaev, K. B. Yushkov, S. P. Anikin, N. A. Evdokimova, S. A. Potanin, Y. S. Dobrolenskiy, O. I. Korablev, V. Ya Molchanov, S. N. Mantsevich

Author Affiliations +

Proceedings Volume 10423, Sensors, Systems, and Next-Generation Satellites XXI; 104231Y (2017) https://doi.org/10.1117/12.2277917
Event: SPIE Remote Sensing, 2017, Warsaw, Poland

Abstract

We propose a concept of an imaging near-IR spectrometer for sensing of planetary surfaces. This instrument is intended to analyze mineralogical and, in some cases, petrographic composition of the upper surface layer in the planetary regolith; to identify and monitor OH/H2O bearing minerals and water adsorption in this layer. The scheme of the spectrometer was designed on a basis of an acousto-optic tunable filter (AOTF) that allows imaging of samples in two orthogonal polarization planes simultaneously. Images are registered as a light (e.g. solar one) reflected and scattered from an observed target in the near infrared spectral range. The AOTF’s electrical tuning provides fast and flexible spectral scanning of an image through whole the range analyzed – potentially, ten microseconds per a spectral point. Thus, it is possible to explore reflectance spectra of specified areas on a sample and to detect its minerals composition and microstructure variations. In parallel, one can estimate polarization contrast at different wavelengths thanks to the AOTF’s birefringence properties. In this paper we report design and performance of a laboratory prototype for the near-IR spectro-polarimeteric imaging AOTF system operating in the spectral range from 0.8 to 1.75 μm. Reflectance spectra of some minerals were measured with the spectral resolution of 100 cm^-1 (passband 10 nm at 1 μm). When imaging samples the spatial resolution as high as 0.5 mm was reached at the target distance of one meter. It corresponds to 100 by 100 resolving elements on the CCD matrix for each of two polarizations of the reflected light. Such a concept is also being designed for the spectral range from 1.7 to 3.5 μm.

Citation Download Citation

D. A. Belyaev, K. B. Yushkov, S. P. Anikin, N. A. Evdokimova, S. A. Potanin, Y. S. Dobrolenskiy, O. I. Korablev, V. Ya Molchanov, and S. N. Mantsevich "Near infrared imager for spectral and polarization analysis of planetary surfaces", Proc. SPIE 10423, Sensors, Systems, and Next-Generation Satellites XXI, 104231Y (29 September 2017); https://doi.org/10.1117/12.2277917

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available