大地测量与地球动力学
大地測量與地毬動力學
대지측량여지구동역학
JOURNAL OF GEODESY AND GEODYNAMICS
2009年
6期
130-132,138
,共4页
田颜锋%李姗姗%刘晓刚%付国峰
田顏鋒%李姍姍%劉曉剛%付國峰
전안봉%리산산%류효강%부국봉
傅立叶变换%卷积%FIR数字滤波%航空重力数据%栅栏效应
傅立葉變換%捲積%FIR數字濾波%航空重力數據%柵欄效應
부립협변환%권적%FIR수자려파%항공중력수거%책란효응
Fourier transform%convolution integral%FIR digital filter%aerial gravity data%barrier phenomena
针对航空重力测量数据事后处理的特点,基于窗函数法设计了FIR数字滤波器.数据处理结果表明:FIR数字滤波器具有精确的线性相位,滤波过程稳定;设计方法简单,易于上机实现;在滤波过程中卷积运算能够部分降低傅立叶变换中的栅栏效应.
針對航空重力測量數據事後處理的特點,基于窗函數法設計瞭FIR數字濾波器.數據處理結果錶明:FIR數字濾波器具有精確的線性相位,濾波過程穩定;設計方法簡單,易于上機實現;在濾波過程中捲積運算能夠部分降低傅立葉變換中的柵欄效應.
침대항공중력측량수거사후처리적특점,기우창함수법설계료FIR수자려파기.수거처리결과표명:FIR수자려파기구유정학적선성상위,려파과정은정;설계방법간단,역우상궤실현;재려파과정중권적운산능구부분강저부립협변환중적책란효응.
Considering the characteristics of the processing of aerial gravimetry data, a FIR digital filter based on the window function is designed. The results show that FIR digital filter has accurate linearity phase and its filtering process is steady and the method is simple and easy to be realized on the computer.The barrier phenomena in the Fourier transform can be partially reduced by the convolution integral in the process of filtering.
