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EXPERIMENTAL RESEARCHES ON FIR LOWPASS DIGITAL FILTERS BASED ON WINDOW FUNCTIONS OF AIRBORNE GRAVITY DATA |
GUO Zhi-hong, LUO Feng, An Zhan-feng |
China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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Abstract Using FIR (Finite Impulse Response) lowpass digital filters based on window functions, the authors conducted experimental researches on the filtering of airborne gravity data, and obtained some useful results. By selecting proper window shape, window length and filter parameters, the window functions FIR lowpass digital filters can attain a good filtering effect on airborne gravity data.
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Received: 10 July 2007
Published: 24 December 2007
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