VLBI观测信号相关处理中的小波保角变换

Daubechies小波可以表征为幂函数或e指数函数的形式 ,保持相关相位条纹的幅角不变。在VLBI观测信号相关处理过程中引入了小波分析方法 ,以探讨小波理论在VLBI技术中的应用特点。两个台站的VLBI观测信号经过时间补偿和干涉条纹旋转后 ,利用静态小波算法在线性空间中的保角变换特征可提取VLBI信号的干涉相位特征 ,并完整保留相位的时序关系。

ON CONFORMAL TRANSFORMATION OF WAVELET METHOD IN CORRELATION OF VLBI

Daubechies wavelet can be cxpressed by power function or exponential function. In the transformation of wavelet method, the argument of correlating phase frings is maintained. In this paper, the method of wavelet analysis was introduced into correlating process of VLBI, the applied feature of wavelet theory in VLBI was discussed. After time compensating and fringe phase deflecting, the interfered phase feature of VLBI signals was extracted by means of the conformal transformation of statical wavelet in linear space.