Analyzing linear wind field by the convention VAD, we can obtain direc tly the mean divergence, the mean deformation, the mean horizontal wind or the c omponents of the wind field at the center of the scanned circle. If the actual w ind is nonlinear, it is different in the theory, the convention VAD analysis can not provide directly the above-mentioned components at all. In this paper, we c onsidered the general form of a nonlinear wind in application of the VAD method. It includes testing of nonlinear of observations, determining the nonlinear mod el (range depends of the F coefficients), and using the least-squares fit in range to obtain the components of the wind. The case analysis of single-Doppler observ ations shows that the deviation of the result is small to the standard of linear wind observations at the same height and time, relative error is from 15 % to 1 7 %. The developed VAD method is reasonable to the nonlinear wind.