航空重力测量数据的小波滤波处理

WAVELETS IN AIRBORNE GRAVIMETRY

构造三类连续小波函数对航空重力测量数据进行小波滤波处理 .三类连续小波函数分别用于对测量数据在某一空间尺度 (或时间尺度 )上的低通 ,一阶求导和二阶求导滤波 .着重介绍三类连续小波函数的构造原理与过程 ,并说明其相对于传统的数字滤波器的优势 .对系统的技术参数 (滤波器窗口宽度参数δ和尺度参数s)进行了调试实验 .

Three sets of continuous wavelets are constructed for the filtering processing of airborne gravimetry data. The continuous wavelet filters are used to perform the low passing, first order derivative and second order derivative filterings at expected space (or time) scales for the airborne gravimetry data. Here we focus on how to construct the continuous wavelet filters and show their working principle. Particularly the technical parameters (window width parameter and scale parameter) of the filters are tested. The advantages of the continuous wavelet filters over the conventional digital filters are also discussed. We make some filtering tests, which show the feasibility and effectiveness of applying the continuous wavelet filters to airborne gravimetry.