Journal ArticleDOI
Optical design of a short-wave infrared prism-grating imaging spectrometer
TLDR
A prism-grating model is established to calculate the optimal combination of prism and grating parameters to balance spectral smile over the entire band and the system offers the advantages of large relative aperture, excellent imaging quality, reduced spectral smile, and spectral keystone, miniaturization, and portability.Abstract:
A miniaturized portable short-wave infrared imaging spectroscopy optical system is designed based on a prism-grating dispersion module. We established a prism-grating model to calculate the optimal combination of prism and grating parameters to balance spectral smile over the entire band. The design method for the telescopic system and spectroscopic system combines independent design with integrated optimization. The system’s spectral smile and spectral keystone are less than 15 μm and less than half a pixel, respectively. The total optical system length is 230 mm, which meets the miniaturization requirements for airborne systems. The system’s spatial resolution is 1 mrad, and its average spectral resolution is 6.2 nm. The system offers the advantages of large relative aperture, excellent imaging quality, reduced spectral smile, and spectral keystone, miniaturization, and portability.read more
Citations
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Journal ArticleDOI
Fast hyperspectral imager driven by a low-cost and compact galvo-mirror
TL;DR: A fast and high spectral resolution imaging spectrometer to obtain the spectral-spatial information with the help of a low-cost and compact galvo-mirror and it is believed that with the improvement of camera performance, this prototype can obtain hyperspectral data at a higher sampling speed.
Journal ArticleDOI
Optical Design of Imaging Spectrometer Based on Linear Variable Filter for Nighttime Light Remote Sensing.
TL;DR: In this article, an optical system of imaging spectrometer based on linear variable filter was proposed, which can obtain the multi-spectral images of eight bands with a spatial resolution of 21.5 m and a swath width of 320 km at the altitude of 500 km.
Journal ArticleDOI
Wide-field grating-prism imaging spectrometer: optical design and implementation
Wei Lidong,Zhou Jinsong,Li Yacan,Feng Lei,Jing Juanjuan,Lei Yang,Nie Boyang,Xu Li,He Xiaoying +8 more
TL;DR: The tolerance analysis indicates that the GP spectrometer can be easily manufactured and implemented, and the results confirmed that the design will be useful in the fields of aeronautics and astronautics.
Journal ArticleDOI
Compact Shortwave Infrared Imaging Spectrometer Based on a Catadioptric Prism
TL;DR: In this article , a catadioptric curved prism is placed at the secondary mirror position of the spectrometer and used to balance the aberrations, enlarge the dispersion width, and decrease the volume.
Journal ArticleDOI
Design of a Prism-Grating Wide Spectral Range Transmittance Imaging Spectrometer
TL;DR: In this article , the authors proposed a wide spectral range transmission prism-grating imaging spectrometer with a working range of 400-1750 nm using Code V. The system size is less than 90 mm.
References
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Using Imaging Spectroscopy to study soil properties
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TL;DR: In this paper, the authors provide an up-to-date overview of some of the case studies that have used IS technology for soil science applications, including soil degradation (salinity, erosion, and deposition), soil mapping and classification, soil genesis and formation, soil contamination, soil water content, and soil swelling.
Journal ArticleDOI
HgCdTe avalanche photodiode detectors for airborne and spaceborne lidar at infrared wavelengths
TL;DR: The results show >90% quantum efficiencies between 0.8 μm and the cut-off wavelength, >600 APD gain, near unity excess noise factor, 6-10 MHz electrical bandwidth and <0.5 fW/Hz1/2 noise equivalent power (NEP).
Proceedings ArticleDOI
Imaging spectrometer for process industry applications
TL;DR: In this paper, a prism-grating-prism (POP) element is used as the dispersive component and advanced camera solutions for on-line applications for image spectroscopy.
Journal ArticleDOI
Detection of unmanned aerial vehicles using a visible camera system.
TL;DR: A computationally efficient UAV detection algorithm consisting of horizon finding, motion feature extraction, blob analysis, and coherence analysis that had the best performance compared to the two algorithmic variants.