Two-dimensional Fourier Phase Of The Wind Guide Technology

This article is composed of six parts. In the first part, the research progress of cloud motion wind is introduced and the significance of the Fourier phrase analysis technique was given. In the second part, based on fluctuation theory and Fourier phrase analysis, the one-Dim Fourier analysis technique on cloud motion winds is deduced, and the error of the technique is analyzed. In the third part, basing on the one-Dim Fourier phrase analysis technique, the two-Dim Fourier phrase analysis technique is given, and improved the arithmetic of fast Fourier transform (FFT). By simulating mathematically on frequency and on space, we can find the average speed of space field and the average speed of frequency field that is weighted by amplitude, and analyse their relation, and analyse the meaning of space speed variance x and frequency speed variance V. In the fourth part, how to ensure the height of cloud is introduced, and basing on the theory of wind field continuity, the height updating quality controlling is introduced. In the fifth part, the system of cloud wind is introduced, we tracked cloud-motion of consecutive satellite images with one-minute interval by the 1-D Fourier analysis technique and the two-Dim Fourier analysis technique and the FFT analysis technique, and dispose them with quality controlling. In the sixth part, we summarized our research and put up with shortages of this article.