结合PCA的尺度不变特征变换(SIFT)算法，包括单边带、双边带、载波抑制及四倍频,部分实现了追踪测速迭代松弛算法。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Including single sideband, double sideband, suppressed carrier and quadruple, Partially achieved tracking speed iterativ