Sentinel-5: a novel measurement approach to quantify diffuser induced spectral features

Ferreria, Luis; Burns, Tristan; Keim, C.; Prieto, Lucia Perez; Krauser, J.; Weise, Dennis; Karafolas, Nikos; Cugny, Bruno; Sodnik, Zoran

doi:10.1117/12.2296079

Cited by 2 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this section, the SFA measurement technique, introduced by Burns et al (2017), is presented in a revised state. The goal of this technique is the reduction in experimental complexity and, therefore, systematic error contributions during data acquisition.…”

Section: Sfa Measurement Chainmentioning

confidence: 99%

“…The summation on the intensity basis is justified as crosscoherence terms involving the interference of different wavelengths of actual sunlight, which will vanish for sufficiently long integration times. The summation procedure is detailed in Burns et al (2017) and can be summarized as follows:…”

Section: Principlementioning

confidence: 99%

“…Many current and future Earth observation missions carry wide-field spectrometer payloads, such as the Envisat Medium Resolution Imaging Spectrometer (Olij et al, 1997), the Sentinel-2 Multispectral Imager (Martimort et al, 2012), the Sentinel-3a Ocean and Land Colour Imager (Nieke and Mavrocordatos, 2017), the Sentinel-4/UVN instrument (Clermont et al, 2019), the Sentinel-5/UVNS instrument (Guehne et al, 2017), and the Greenhouse Gas Information System (GHGIS) instrument of CO2M or the former Carbon-Sat (Fletcher et al, 2015). These space-based instruments require in-flight radiometric calibration for which the Sun can be used as a known reference.…”

Section: Introductionmentioning

confidence: 99%

“…A different approach to quantifying spectral features was taken by Burns et al (2017) and improved by Richter et al (2018). It is based on the subsequent acquisition of monochromatic speckle patterns in the slit plane over several spectral channels, which are then propagated numerically through the disperser to the detection plane.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Prediction model for diffuser-induced spectral features in imaging spectrometers

et al. 2021

Self Cite

View full text Add to dashboard Cite

Abstract. Wide-field spectrometers for Earth observation missions require in-flight radiometric calibration for which the Sun can be used as a known reference. Therefore, a diffuser is placed in front of the spectrometer in order to scatter the incoming light into the entrance slit and provide homogeneous illumination. The diffuser, however, introduces interference patterns known as speckles into the system, yielding potentially significant intensity variations at the detector plane, called spectral features. There have been several approaches implemented to characterize the spectral features of a spectrometer, e.g., end-to-end measurements with representative instruments. Additionally, in previous publications a measurement technique was proposed, which is based on the acquisition of monochromatic speckles in the entrance slit following a numerical propagation through the disperser to the detection plane. Based on this measurement technique, we present a stand-alone prediction model for the magnitude of spectral features in imaging spectrometers, requiring only few input parameters and, therefore, mitigating the need for expensive measurement campaigns.

show abstract

Section: Sfa Measurement Chainmentioning

confidence: 99%

Section: Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prediction model for diffuser-induced spectral features in imaging spectrometers

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…A different approach to quantify Spectral Features was taken by Burns et al (2017) and improved by Richter et al (2018).…”

Section: Introductionmentioning

confidence: 99%

Prediction Model for Diffuser Induced Spectral Features in Imaging Spectrometers

Richter¹,

Keim²,

Caron³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract. Wide-field spectrometers for Earth Observation missions require inflight radiometric calibration, for which the sun can be used as a known reference. Therefor a diffuser is placed in front of the spectrometer in order to scatter the incoming light into the entrance slit and provide homogeneous illumination. The diffuser however, introduces interference patterns known as speckles into the system, yielding potentially significant intensity variations at the detector plane, called Spectral Features. There have been several approaches implemented to characterize the Spectral Features of a spectrometer, e.g. end-to-end measurements with representative instruments. Additionally, in previous publications a measurement technique was proposed, which is based on the acquisition of monochromatic speckles in the entrance slit following a numerical propagation through the disperser to the detection plane. Based on this measurement technique we present a standalone prediction model for the magnitude of Spectral Features in imaging spectrometers, requiring only few input parameters and therefor mitigating the need for expensive measurement campaigns.

show abstract

Sentinel-5: a novel measurement approach to quantify diffuser induced spectral features

Cited by 2 publications

References 0 publications

Prediction model for diffuser-induced spectral features in imaging spectrometers

Prediction model for diffuser-induced spectral features in imaging spectrometers

Prediction Model for Diffuser Induced Spectral Features in Imaging Spectrometers

Contact Info

Product

Resources

About