FMCW调频连续波雷达的测距测角，搭建OFDM通信系统的框架，结合PCA的尺度不变特征变换(SIFT)算法。- FMCW frequency modulated continuous wave radar range and angular measurements, Build a fr a mework OFDM communication system, Combined with PCA scale invariant feature transform (SIFT) algorithm