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A Flight Test of the Strapdown Airborne Gravimeter SGA-WZ in Greenland.

Zhao L, Forsberg R, Wu M, Olesen AV, Zhang K, Cao J - Sensors (Basel) (2015)

Bottom Line: An overview of this new system SGA-WZ is given, including system design, sensor performance and data processing.For the primary repeated line, a mean r.m.s. deviation of the differences was less than 1.5 mGal, with the error estimate confirmed from ground truth data.This implies that the SGA-WZ could meet standard geophysical survey requirements at the 1 mGal level.

View Article: PubMed Central - PubMed

Affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. zl_nudt@yahoo.com.

ABSTRACT
An airborne gravimeter is one of the most important tools for gravity data collection over large areas with mGal accuracy and a spatial resolution of several kilometers. In August 2012, a flight test was carried out to determine the feasibility and to assess the accuracy of the new Chinese SGA-WZ strapdown airborne gravimeter in Greenland, in an area with good gravity coverage from earlier marine and airborne surveys. An overview of this new system SGA-WZ is given, including system design, sensor performance and data processing. The processing of the SGA-WZ includes a 160 s length finite impulse response filter, corresponding to a spatial resolution of 6 km. For the primary repeated line, a mean r.m.s. deviation of the differences was less than 1.5 mGal, with the error estimate confirmed from ground truth data. This implies that the SGA-WZ could meet standard geophysical survey requirements at the 1 mGal level.

No MeSH data available.


Related in: MedlinePlus

Structure of SGA-WZ. In the left figure, it is the 3D model of SGA-WZ without any shells; the right figure shows the working state of the system.
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sensors-15-13258-f001: Structure of SGA-WZ. In the left figure, it is the 3D model of SGA-WZ without any shells; the right figure shows the working state of the system.

Mentions: Figure 1 shows the whole structure of SGA-WZ which can be divided into two main parts: Sensors Box and Control Box.


A Flight Test of the Strapdown Airborne Gravimeter SGA-WZ in Greenland.

Zhao L, Forsberg R, Wu M, Olesen AV, Zhang K, Cao J - Sensors (Basel) (2015)

Structure of SGA-WZ. In the left figure, it is the 3D model of SGA-WZ without any shells; the right figure shows the working state of the system.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507644&req=5

sensors-15-13258-f001: Structure of SGA-WZ. In the left figure, it is the 3D model of SGA-WZ without any shells; the right figure shows the working state of the system.
Mentions: Figure 1 shows the whole structure of SGA-WZ which can be divided into two main parts: Sensors Box and Control Box.

Bottom Line: An overview of this new system SGA-WZ is given, including system design, sensor performance and data processing.For the primary repeated line, a mean r.m.s. deviation of the differences was less than 1.5 mGal, with the error estimate confirmed from ground truth data.This implies that the SGA-WZ could meet standard geophysical survey requirements at the 1 mGal level.

View Article: PubMed Central - PubMed

Affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. zl_nudt@yahoo.com.

ABSTRACT
An airborne gravimeter is one of the most important tools for gravity data collection over large areas with mGal accuracy and a spatial resolution of several kilometers. In August 2012, a flight test was carried out to determine the feasibility and to assess the accuracy of the new Chinese SGA-WZ strapdown airborne gravimeter in Greenland, in an area with good gravity coverage from earlier marine and airborne surveys. An overview of this new system SGA-WZ is given, including system design, sensor performance and data processing. The processing of the SGA-WZ includes a 160 s length finite impulse response filter, corresponding to a spatial resolution of 6 km. For the primary repeated line, a mean r.m.s. deviation of the differences was less than 1.5 mGal, with the error estimate confirmed from ground truth data. This implies that the SGA-WZ could meet standard geophysical survey requirements at the 1 mGal level.

No MeSH data available.


Related in: MedlinePlus