快速傅里叶变换模拟程序，对于做三维测量的很有用-Fast Fourier Transform Simulation Program, for doing the very useful three-dimensional measurement

由简单的三维图形组合而成的飞行飞机，通过各种变换方法进行组合-Flying aircraft, by the combination of simple three-dimensional graphics to be combined through various transformations

二维、三维变换的数学知识、变换原理、变换种类、变换方法-good

探测三维冲突概率算法，通过对误差协方差矩阵的运算，对其进行一事实上的矩阵变换使算法进行简化，-Three-dimensional probabilistic conflict detection algorithm, through the error covariance matrix of computing, its a matter of fact so that the matrix transformation algorithm can be simplified,