中文说明：
全相位FFT算法是天津大学的王兆华和候正信教授提出的，具有初始相位不变和有效防止频谱泄露的特性，在他的相关书籍上做过严格的证明，并有相应的matlab程序。
English Description：
All phase FFT algorithm is proposed by Professor Wang Zhaohua and Professor Hou Zhengxin of Tianjin University. It has the characteristics of invariable initial phase and effective prevention of spectrum leakage. It has been strictly proved in his related books, and has the corresponding matlab program.