dwd

The discrete Wigner distribution ( DWD ) is a two dimensional representation of a signal in discrete time dimension and discrete frequency dimension .

离散Wigner分布（DWD）是信号在离散时域和离散频域上的二维表示。

Application of Subsize Wireless Directional While Drilling ( DWD ) Apparatus in Short-radius and Deep Sidetracking Horizontal Wells

小尺寸无线随钻测量仪器DWD在深侧钻短半径水平井中的应用

This paper applied three joint time frequency analysis ( JTFA ) methods to a surface discharge signal in oil , i.e. , Short time Fourier transformation ( STFT ) based spectrogram , Wigner distribution ( DWD ) and Gabor spectrogram ( DGS ) .

将短时傅立叶变换谱、Wigner分布及Gabor谱等3种联合时频分析方法应用于离散时间域，分析并处理了油中沿面放电波形。

The successful application of DWD in the short-radius deep sidetracking of horizontal wells in Taha region provides an effective way for reducing the cost of short radius horizontal well drilling , improving the operation efficiency , eliminating the operational risks , it is worthy to be introduced in oilfields .

DWD在塔河地区深侧钻短半径水平井中的成功应用，为短半径水平井降低施工成本、提高施工效率、回避施工风险找到了一条有效的途径，具有一定的推广应用价值。