基于云导风使用的最大相关法(已经广泛应用)和TCFM法(傅立叶相位分析法和最大相关法相结合)两方法的原理,开发了利用FY-2C静止气象卫星30min间隔卫星云图资料获得云迹风的可视化导风实验系统。利用该系统处理2005年夏季麦莎、卡努、龙王等3个台风期间的卫星云图,对得到的云迹风进行台风路径反演分析。结果表明,TCFM导风方法得到的结果优于最大相关法。
A cloud motion wind inferring system has been developed based on the principles of traditional maximum correlation and a recently-suggested TCFM ( Tracking cloud with Combined Fourier phase analysis and Maximum correlation) technique to deal with FY-2C satellite images for cloud motion vectors. Image series for typhoon "Matsa", "Khanun" and "Longwang" observed by FY-2C in 2005 have been processed with the system and the cloud motion wind fields obtained are used to determine the track of typhoon. It has been shown that the tracks based on the results from TCFM are more accurate than those from the maximum correlation.