中文说明： FMCW调频连续波雷达的测距测角，代码里有很完整的注释和解释，包括 MUSIC算法，ESPRIT算法 ROOT-MUSIC算法，是学习PCA特征提取的很好的学习资料，包括面积、周长、矩形度、伸长度，部分实现了追踪测速迭代松弛算法。
English Description：
FMCW frequency modulated continuous wave radar ranging angle, code has a very complete note and explanation, including music algorithm, ESPRIT algorithm, Root-MUSIC algorithm, is a good learning material to learn PCA feature extraction, including area, perimeter, rectangularity, extension, part of the realization of the tracking velocity iterative relaxation algorithm.