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Pointing Verification Method for Spaceborne Lidars

Amediek, Axel and Wirth, Martin (2017) Pointing Verification Method for Spaceborne Lidars. Remote Sensing, 9 (1), pp. 56-63. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/rs9010056 ISSN 2072-4292

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Official URL: http://www.mdpi.com/2072-4292/9/1/56/


High precision acquisition of atmospheric parameters from the air or space by means of lidar requires accurate knowledge of laser pointing. Discrepancies between the assumed and actual pointing can introduce large errors due to the Doppler effect or a wrongly assumed air pressure at ground level. In this paper, a method for precisely quantifying these discrepancies for airborne and spaceborne lidar systems is presented. The method is based on the comparison of ground elevations derived from the lidar ranging data with high-resolution topography data obtained from a digital elevation model and allows for the derivation of the lateral and longitudinal deviation of the laser beam propagation direction. The applicability of the technique is demonstrated by using experimental data from an airborne lidar system, confirming that geo-referencing of the lidar ground spot trace with an uncertainty of less than 10 m with respect to the used digital elevation model (DEM) can be obtained.

Item URL in elib:https://elib.dlr.de/110461/
Document Type:Article
Title:Pointing Verification Method for Spaceborne Lidars
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Amediek, AxelDLR, IPAhttps://orcid.org/0000-0002-5076-1559
Date:10 January 2017
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/rs9010056
Page Range:pp. 56-63
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:lidar, lidar pointing, DIAL, IPDA-lidar
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 - Vorhaben LIDAR-Forschung und -Entwicklung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Amediek, Dr.rer.nat. Axel
Deposited On:12 Jan 2017 14:42
Last Modified:26 May 2020 17:57

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