One of the most popular approaches to extract the gravity field information from the much noisy measurement that observed by airbornegravimeter is lowpass filtering.
从含有大量噪声的航空重力仪测量值中提取重力场信息，最常用的方法是使用低通滤波器。
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There is a lot of noise in the data observed by airbornegravimeter. Digital lowpass FIRfilter is needed to extract the factual gravity field information from such data.