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Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon

Bramstedt, Klaus and Stone, Thomas C. and Gottwald, Manfred and Noel, Stefan and Bovensmann, Heinrich and Burrows, John P. (2017) Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon. Atmospheric Measurement Techniques (AMT), 10, pp. 2413-2423. Copernicus Publications. DOI: 10.5194/amt-10-2413-2017 ISSN 1867-1381

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Official URL: https://www.atmos-meas-tech.net/10/2413/2017/amt-10-2413-2017.pdf

Abstract

SCIAMACHY on Envisat (2002–2012) performed nadir, limb, solar/lunar occultation and various monitoring measurements. The pointing information of the instrument is determined by the attitude information of the Envisat platform with its star trackers together with the encoder readouts of both the azimuth and the elevation scanner of SCIAMACHY. In this work, we present additional sources of attitude information from the SCIAMACHY measurements itself. The basic principle is the same as used by the star tracker: We measure the viewing direction towards celestial objects, i.e. sun and moon to detect possible mispointings. Using these measurements, we fit improved mispointing parameters by minimising the pointing offsets in elevation and azimuth. The geolocation of all retrieved products will benefit from this, especially the altitudes assigned to SCIAMACHY's limb and occultation products will be improved.

Item URL in elib:https://elib.dlr.de/111202/
Document Type:Article
Title:Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bramstedt, Klausiup-ife, universität bremenUNSPECIFIED
Stone, Thomas C.UNSPECIFIEDUNSPECIFIED
Gottwald, ManfredManfred.Gottwald (at) dlr.deUNSPECIFIED
Noel, Stefaniup-ife, universität bremenUNSPECIFIED
Bovensmann, Heinrichiup-ife, universität bremenUNSPECIFIED
Burrows, John P.iup-ife, universität bremenUNSPECIFIED
Date:5 July 2017
Journal or Publication Title:Atmospheric Measurement Techniques (AMT)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI :10.5194/amt-10-2413-2017
Page Range:pp. 2413-2423
Publisher:Copernicus Publications
ISSN:1867-1381
Status:Published
Keywords:SCIAMACHY, ENVISAT, remote sensing, atmosphere, attitude, pointing, Sun follower
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt ENVISAT (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Gottwald, Dr.rer.nat. Manfred
Deposited On:20 Feb 2017 09:41
Last Modified:02 Aug 2017 11:11

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