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SGA-WZ: A New Strapdown Airborne Gravimeter

Inertial navigation systems and gravimeters are now routinely used to map the regional gravitational quantities from an aircraft with mGal accuracy and a spatial resolution of a few kilometers. However, airborne gravimeter of this kind is limited by the inaccuracy of the inertial sensor performance,...

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Detalles Bibliográficos
Autores principales: Huang, Yangming, Olesen, Arne Vestergaard, Wu, Meiping, Zhang, Kaidong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3444103/
https://www.ncbi.nlm.nih.gov/pubmed/23012545
http://dx.doi.org/10.3390/s120709336
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author Huang, Yangming
Olesen, Arne Vestergaard
Wu, Meiping
Zhang, Kaidong
author_facet Huang, Yangming
Olesen, Arne Vestergaard
Wu, Meiping
Zhang, Kaidong
author_sort Huang, Yangming
collection PubMed
description Inertial navigation systems and gravimeters are now routinely used to map the regional gravitational quantities from an aircraft with mGal accuracy and a spatial resolution of a few kilometers. However, airborne gravimeter of this kind is limited by the inaccuracy of the inertial sensor performance, the integrated navigation technique and the kinematic acceleration determination. As the GPS technique developed, the vehicle acceleration determination is no longer the limiting factor in airborne gravity due to the cancellation of the common mode acceleration in differential mode. A new airborne gravimeter taking full advantage of the inertial navigation system is described with improved mechanical design, high precision time synchronization, better thermal control and optimized sensor modeling. Apart from the general usage, the Global Positioning System (GPS) after differentiation is integrated to the inertial navigation system which provides not only more precise altitude information along with the navigation aiding, but also an effective way to calculate the vehicle acceleration. Design description and test results on the performance of the gyroscopes and accelerations will be emphasized. Analysis and discussion of the airborne field test results are also given.
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spelling pubmed-34441032012-09-25 SGA-WZ: A New Strapdown Airborne Gravimeter Huang, Yangming Olesen, Arne Vestergaard Wu, Meiping Zhang, Kaidong Sensors (Basel) Article Inertial navigation systems and gravimeters are now routinely used to map the regional gravitational quantities from an aircraft with mGal accuracy and a spatial resolution of a few kilometers. However, airborne gravimeter of this kind is limited by the inaccuracy of the inertial sensor performance, the integrated navigation technique and the kinematic acceleration determination. As the GPS technique developed, the vehicle acceleration determination is no longer the limiting factor in airborne gravity due to the cancellation of the common mode acceleration in differential mode. A new airborne gravimeter taking full advantage of the inertial navigation system is described with improved mechanical design, high precision time synchronization, better thermal control and optimized sensor modeling. Apart from the general usage, the Global Positioning System (GPS) after differentiation is integrated to the inertial navigation system which provides not only more precise altitude information along with the navigation aiding, but also an effective way to calculate the vehicle acceleration. Design description and test results on the performance of the gyroscopes and accelerations will be emphasized. Analysis and discussion of the airborne field test results are also given. Molecular Diversity Preservation International (MDPI) 2012-07-06 /pmc/articles/PMC3444103/ /pubmed/23012545 http://dx.doi.org/10.3390/s120709336 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Huang, Yangming
Olesen, Arne Vestergaard
Wu, Meiping
Zhang, Kaidong
SGA-WZ: A New Strapdown Airborne Gravimeter
title SGA-WZ: A New Strapdown Airborne Gravimeter
title_full SGA-WZ: A New Strapdown Airborne Gravimeter
title_fullStr SGA-WZ: A New Strapdown Airborne Gravimeter
title_full_unstemmed SGA-WZ: A New Strapdown Airborne Gravimeter
title_short SGA-WZ: A New Strapdown Airborne Gravimeter
title_sort sga-wz: a new strapdown airborne gravimeter
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3444103/
https://www.ncbi.nlm.nih.gov/pubmed/23012545
http://dx.doi.org/10.3390/s120709336
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AT wumeiping sgawzanewstrapdownairbornegravimeter
AT zhangkaidong sgawzanewstrapdownairbornegravimeter