VIRTIS-H: a high-spectral-resolution channel for the Rosetta infrared imaging spectrometer

2000 ◽  
Author(s):  
Pierre Drossart ◽  
Alain Semery ◽  
Marc Bouye ◽  
Yann Hello ◽  
Gerard Huntzinger ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Infrared Imaging ◽  
High Spectral Resolution ◽  
Imaging Spectrometer

Analysis and Optical Design of Very High Spectral Resolution Imaging Spectrometer of the Atmospheric CO2

2015 ◽  
Vol 35 (7) ◽  
pp. 0722001
Author(s):  
宋文宝 Song Wenbao ◽  
靳阳明 Jin Yangming ◽  
赵知诚 Zhao Zhicheng ◽  
沈为民 Shen Weimin ◽  
范东栋 Fan Dongdong
Keyword(s):  
Spectral Resolution ◽  
Optical Design ◽  
Atmospheric Co2 ◽  
High Spectral Resolution ◽  
Imaging Spectrometer ◽  
Resolution Imaging ◽  
Very High

scholarly journals A global compilation of in situ aquatic high spectral resolution inherent and apparent optical property data for remote sensing applications

2019 ◽  
Author(s):  
Kimberly A. Casey ◽  
Cecile S. Rousseaux ◽  
Watson W. Gregg ◽  
Emmanuel Boss ◽  
Alison P. Chase ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Organic Matter ◽  
Optical Property ◽  
Dissolved Organic Matter ◽  
Spectral Resolution ◽  
Infrared Imaging ◽  
High Spectral Resolution ◽  
Colored Dissolved Organic Matter ◽  
Sensing Applications

Abstract. Light emerging from natural water bodies and measured by remote sensing radiometers contains information about the local type and concentrations of phytoplankton, non-algal particles and colored dissolved organic matter in the underlying waters. An increase in spectral resolution in forthcoming satellite and airborne remote sensing missions is expected to lead to new or improved capabilities to characterize aquatic ecosystems. Such upcoming missions include NASA's Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) Mission; the NASA Surface Biology and Geology observable mission; and NASA Airborne Visible/Infrared Imaging Spectrometer – Next Generation (AVIRIS-NG) airborne missions. In anticipation of these missions, we present an organized dataset of geographically diverse, quality-controlled, high spectral resolution inherent and apparent optical property (IOP/AOP) aquatic data. The data are intended to be of use to increase our understanding of aquatic optical properties, to develop aquatic remote sensing data product algorithms, and to perform calibration and validation activities for forthcoming aquatic-focused imaging spectrometry missions. The dataset is comprised of contributions from several investigators and investigating teams collected over a range of geographic areas and water types, including inland waters, estuaries and oceans. Specific in situ measurements include coefficients describing particulate absorption, particulate attenuation, non-algal particulate absorption, colored dissolved organic matter absorption, phytoplankton absorption, total absorption, total attenuation, particulate backscattering, and total backscattering, as well as remote-sensing reflectance, and irradiance reflectance. The dataset can be downloaded from https://doi.pangaea.de/10.1594/PANGAEA.902230 (Casey et al., 2019).

Near-Infrared Imaging Spectroscopy of the Seyfert Nucleus of the Circinus Galaxy

1997 ◽  
Vol 159 ◽  
pp. 351-352
Author(s):  
R. Maiolino ◽  
N. Thatte ◽  
H. Kroker ◽  
J.F. Gallimore ◽  
R. Genzel
Keyword(s):  
Adaptive Optics ◽  
Spectral Resolution ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Imaging Spectroscopy ◽  
Near Infrared Imaging ◽  
Imaging Spectrometer ◽  
First Order ◽  
Seyfert Nucleus ◽  
Adaptive Optics System

The Circinus galaxy is a nearby (4 Mpc) spiral that hosts a Seyfert nucleus as deduced by the emission of intense coronal lines (Oliva et al. 1994) and by the prominent ionization cone observed in [O III] images (Marconi et al. 1994).We present K-band imaging spectroscopy of the nucleus of this galaxy obtained by means of 3D, the MPE imaging spectrometer (Weitzel et al. 1996), and ROGUE, a first-order adaptive-optics system (Thatte et al. 1995), mounted on the 2.2-m ESO telescope. The spectral resolution is 1000 and the average optical seeing was about 0”.6 (= 12 pc at the source).

scholarly journals Potential of next-generation imaging spectrometers to detect and quantify methane point sources from space

2019 ◽  
Vol 12 (10) ◽  
pp. 5655-5668 ◽  
Author(s):  
Daniel H. Cusworth ◽  
Daniel J. Jacob ◽  
Daniel J. Varon ◽  
Christopher Chan Miller ◽  
Xiong Liu ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Infrared Imaging ◽  
Signal To Noise Ratio ◽  
Optimal Estimation ◽  
Estimation Algorithm ◽  
Point Sources ◽  
Atmospheric Methane ◽  
Next Generation ◽  
Pixel Resolution ◽  
Imaging Spectrometer

Abstract. We examine the potential for global detection of methane plumes from individual point sources with the new generation of spaceborne imaging spectrometers (EnMAP, PRISMA, EMIT, SBG, CHIME) scheduled for launch in 2019–2025. These instruments are designed to map the Earth's surface at high spatial resolution (30 m×30 m) and have a spectral resolution of 7–10 nm in the 2200–2400 nm band that should also allow useful detection of atmospheric methane. We simulate scenes viewed by EnMAP (10 nm spectral resolution, 180 signal-to-noise ratio) using the EnMAP end-to-end simulation tool with superimposed methane plumes generated by large-eddy simulations. We retrieve atmospheric methane and surface reflectivity for these scenes using the IMAP-DOAS optimal estimation algorithm. We find an EnMAP precision of 3 %–7 % for atmospheric methane depending on surface type. This allows effective single-pass detection of methane point sources as small as 100 kg h−1 depending on surface brightness, surface homogeneity, and wind speed. Successful retrievals over very heterogeneous surfaces such as an urban mosaic require finer spectral resolution. We tested the EnMAP capability with actual plume observations over oil/gas fields in California from the Airborne Visible/Infrared Imaging Spectrometer – Next Generation (AVIRIS-NG) sensor (3 m×3 m pixel resolution, 5 nm spectral resolution, SNR 200–400), by spectrally and spatially downsampling the AVIRIS-NG data to match EnMAP instrument specifications. Results confirm that EnMAP can successfully detect point sources of ∼100 kg h−1 over bright surfaces. Source rates inferred with a generic integrated mass enhancement (IME) algorithm were lower for EnMAP than for AVIRIS-NG. Better agreement may be achieved with a more customized IME algorithm. Our results suggest that imaging spectrometers in space could play an important role in the future for quantifying methane emissions from point sources worldwide.

Sign in / Sign up

Export Citation Format

Share Document