SIELETERS, an airborne infrared dual-band spectro-imaging system for measurement of scene spectral signatures

Coudrain, Christophe; Bernhardt, Sylvie; Caes, Marcel; Domel, Roland; Ferrec, Yann; Gouyon, Remi; Henry, Didier; Jacquart, Marc; Kattnig, Alain; Perrault, Philippe; Poutier, Laurent; Rousset-Rouvière, Laurent; Tauvy, Michel; Thétas, Sophie; Primot, Jérôme

doi:10.1364/oe.23.016164

Cited by 39 publications

(19 citation statements)

References 19 publications

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“…Imaging is associated with the field of view (FOV) and the resolution of the detection system. Usually, the FOV of the scanning telescope has a wide range of 0.01-100 mrad [52][53][54]. As the FOV and the detection distance increase, the number of pixels receiving the TIR irradiance decreases.…”

Section: Infrared Optical Image Of the Sensormentioning

confidence: 99%

Infrared Optical Observability of an Earth Entry Orbital Test Vehicle Using Ground-Based Remote Sensors

et al. 2019

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Optical design parameters for a ground-based infrared sensor rely strongly on the target’s optical radiation properties. Infrared (IR) optical observability and imaging simulations of an Earth entry vehicle were evaluated using a comprehensive numerical model. Based on a ground-based IR detection system, this model considered many physical mechanisms including thermochemical nonequilibrium reacting flow, radiative properties, optical propagation, detection range, atmospheric transmittance, and imaging processes. An orbital test vehicle (OTV) was selected as the research object for analysis of its observability using a ground-based infrared system. IR radiance contours, maximum detecting range (MDR), and thermal infrared (TIR) pixel arrangement were modeled. The results show that the distribution of IR radiance is strongly dependent on the angle of observation and the spectral band. Several special phenomena, including a strong receiving region (SRR), a characteristic attitude, a blind zone, and an equivalent zone, are all found in the varying altitude MDR distributions of mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) irradiances. In addition, the possible increase in detectivity can greatly improve the MDR at high altitudes, especially for the backward and forward views. The difference in the peak radiance of the LWIR images is within one order of magnitude, but the difference in that of the MWIR images varies greatly. Analyses and results indicate that this model can provide guidance in the design of remote ground-based detection systems.

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Section: Infrared Optical Image Of the Sensormentioning

confidence: 99%

Infrared Optical Observability of an Earth Entry Orbital Test Vehicle Using Ground-Based Remote Sensors

et al. 2019

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“…TSMFTISs were developed as airborne/spaceborne hyperspectral imagers for earth remote sensing because of its high throughput advantage. Over a long period, the TSMFTISs developed include the large aperture static imaging spectrometer (LASIS) [8,9], the high etendue imaging Fourier transform spectrometer (HEIFTS) [10,11], Caméra Hyperspectrale de Démonstration (CaHyD) [12], the aerospace leap-frog imaging static interferometer for Earth observation (ALISEO) [13,14], the medium-and long-wave infrared spectral imaging instrument SIELETERS [15,16], and so on.…”

Section: Introductionmentioning

confidence: 99%

Online Correction Method for the Registration Error between TSMFTIS Detector and Interferogram

Cao

Yuan

et al. 2020

Sensors

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Temporally-spatially modulated Fourier transform imaging spectrometers (TSMFTISs) provide high-throughout-type push-broom spectrometry with both temporal and spatial modulation features. The system requires strict registration between the detector and the interferogram. However, registration errors are unavoidable and directly change the corresponding optical path difference values of the interferogram. As a result, the interferogram should be corrected before restoring the spectrum. In order to obtain the correct optical path difference (OPD) values, an online registration error correction method based on robust least-square linear fitting is presented. The model of the registration error was constructed to analyze its effect on the reconstructed spectra. Fitting methods were used to obtain correct optical path difference information. Simulations based on the proposed method were performed to determine the influence of the registration error on the restored spectra and the effectiveness of the proposed correction method. The simulation results prove that the accuracy of the recovered spectrum can be improved after correcting the interferogram deviation caused by the registration error. The experimental data were also corrected using the proposed methods.

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“…Imaging Static Fourier Transform Spectrometry (SFTS) is a good approach for airborne or spaceborne hyperspectral imaging [1][2][3][4][5][6], especially thanks to its sturdiness (no moving part except the carrier or the scan turret) and its high flux collection efficiency [7]. The formerly cited references give detailed explanations on the setup and underlying optical principles of such instruments; the key point is to superimpose quasi-linearly shaped interference fringes on the scene image.…”

Section: Introductionmentioning

confidence: 99%

“…The formerly cited references give detailed explanations on the setup and underlying optical principles of such instruments; the key point is to superimpose quasi-linearly shaped interference fringes on the scene image. Efficient large étendue imaging instruments usually rely on a shearing interferometer, most often a cyclic interferometer [1][2][3][4] or a roof-prism mirrors Michelson interferometer [5,6,8]. For more compact setups, birefringent shearing interferometers like Savart plates [9][10][11] a Armande Pola Fossi is now with Thales LAS France SAS, 2 avenue Gay- or Double-Wollaston prism devices [12,13] are often used, either for imaging spectrometry or for non-imaging spectrometry.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of nominal and stray waves in birefringent interferometers: application to large-field-of-view imaging Fourier transform spectrometers

et al. 2018

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Birefringent interferometers are often used for compact static Fourier transform spectrometers. In such devices, several uniaxial birefringent parallel or prismatic plates are stacked, with their optical axes set so that there is an efficient coupling from ordinary to extraordinary and extraordinary to ordinary eigenmodes of two successive plates. Such coupling, aside from few particular cases, is however not perfect, an effect that may adversely affect performance. In order to help the design and the tolerancing of these interferometers, we have developed a numerical modeling, based on the propagation of plane waves inside and through the interface of birefringent media. This tool evaluates the traveled optical path length and the amplitude of the different polarization modes, enabling to predict both the optical path differences on the interferometer outputs and the unwanted coupling strengths and related stray wave amplitudes. The tool behavior is illustrated on Savart and Double-Wollaston interferometers, and compared with experimental characterization of a calcite Double-Wollaston prism. OCIS codes: (260.1440) Birefringence; (120.6200) Spectrometers and spectroscopic instrumentation; (110.4234) Multispectral and hyperspectral imaging; (120.0280) Remote sensing and sensors; (120.4570) Optical design of instruments; (300.6300) Spectroscopy, Fourier transforms; (220.4830) Systems design.

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SIELETERS, an airborne infrared dual-band spectro-imaging system for measurement of scene spectral signatures

Cited by 39 publications

References 19 publications

Infrared Optical Observability of an Earth Entry Orbital Test Vehicle Using Ground-Based Remote Sensors

Infrared Optical Observability of an Earth Entry Orbital Test Vehicle Using Ground-Based Remote Sensors

Online Correction Method for the Registration Error between TSMFTIS Detector and Interferogram

Numerical modeling of nominal and stray waves in birefringent interferometers: application to large-field-of-view imaging Fourier transform spectrometers

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