Airborne gravimetry: An investigation of filtering

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1999
Editor: 
Journal Title: 
Geophysics
Journal Date: 
Jan-Feb
Place Published: 
Tertiary Title: 
Volume: 
64
Issue: 
1
Pages: 
61-69
Section / Start page: 
Publisher: 
ISBN Number: 
0016-8033
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000078394200005
LDEO Publication Number: 
Call Number: 
Key Words: 
Abstract: 

Low-pass filtering in airborne gravimetry data processing plays a fundamental role in determining the spectral content and amplitude of the free-air anomaly. Traditional filters used in airborne gravimetry, the 6 x 20-s resistor-capacitor (RC) filter and the 300-s Gaussian filter, heavily attenuate the waveband of the gravity signal. As we strive to reduce the overall error budget to the sub-mGal level, an important step is to evaluate the choice and design of the low-pass filter employed in airborne gravimetry to optimize gravity anomaly recovery and noise attenuation. This study evaluates low-pass filtering options and presents a survey-specific frequency domain filter that employs the fast Fourier transform (FET) for airborne gravity data.

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163FUTimes Cited:12Cited References Count:18

DOI: