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分布式压缩感知的基础向内容梳理
https://blog.csdn.net/qq_21044465/article/details/105802408
给出了内积、投影、最小二乘法
匹配追踪算法（match pursuit, MP）实现信号的稀疏表示.png)
https://zhuanlan.zhihu.com/p/62141208#:~:text=%E5%8C%B9%E9%85%8D%E8%BF%BD%E8%B8%AA%E7%AE%97%E6%B3%95%EF%BC%88match%20pursuit%2C%20MP%EF%BC%89%E5%AE%9E%E7%8E%B0%E4%BF%A1%E5%8F%B7%E7%9A%84%E7%A8%80%E7%96%8F%E8%A1%A8%E7%A4%BA.%20%E9%81%8D%E5%8E%86%E5%AD%97%E5%85%B8%E4%B8%AD%E7%9A%84%E6%AF%8F%E4%B8%80%E4%B8%AA%E5%8E%9F%E5%AD%90%EF%BC%8C%E6%A0%B9%E6%8D%AE%E5%86%85%E7%A7%AF%E6%9C%80%E5%A4%A7%E5%8C%96%E5%8E%9F%E5%88%99%E6%89%BE%E5%88%B0%E4%B8%8E%E4%BF%A1%E5%8F%B7%E7%BB%93%E6%9E%84%E6%9C%80%E7%9B%B8%E8%BF%91%E7%9A%84%E5%8E%9F%E5%AD%90%EF%BC%8C%E4%BD%9C%E4%B8%BA%E5%BD%93%E5%89%8D%E7%9A%84%E5%8C%B9%E9%85%8D%E5%8E%9F%E5%AD%90%EF%BC%8C%E4%BB%8E%E4%BF%A1%E5%8F%B7%E4%B8%AD%E5%8E%BB%E9%99%A4%E4%B8%8E%E8%AF%A5%E5%8E%9F%E5%AD%90%E7%9B%B8%E8%BF%91%E7%9A%84%E6%88%90%E5%88%86%E5%90%8E%EF%BC%8C%E5%AF%B9%E5%89%A9%E4%B8%8B%E7%9A%84%E9%83%A8%E5%88%86%E5%86%8D%E5%92%8C%E5%85%B6%E4%BB%96%E5%8E%9F%E5%AD%90%E6%B1%82%E5%86%85%E7%A7%AF%EF%BC%8C%E6%89%BE%E5%AF%BB%E7%BB%93%E6%9E%84%E7%9B%B8%E4%BC%BC%E7%9A%84%E5%8E%9F%E5%AD%90%EF%BC%8C%E7%9B%B4%E5%88%B0%E6%89%80%E5%89%A9%E4%BD%99%E6%88%90%E5%88%86%E6%BB%A1%E8%B6%B3%E7%BB%99%E5%AE%9A%E7%9A%84%E6%9D%A1%E4%BB%B6%EF%BC%8C%E5%88%99%E5%81%9C%E6%AD%A2%E8%BF%AD%E4%BB%A3%E3%80%82.%20%E4%B8%8A%E9%9D%A2%E8%BF%9E%E6%8E%A5%E4%B8%AD%E7%9A%84%E6%96%87%E7%AB%A0%E5%B7%B2%E7%BB%8F%E5%86%99%E7%9A%84%E5%BE%88%E8%AF%A6%E7%BB%86%E6%98%93%E4%BA%8E%E7%90%86%E8%A7%A3%E4%BA%86%E3%80%82.%20%E4%B8%8B%E9%9D%A2%E6%98%AF%E7%9C%8B%E5%AE%8C%E4%B8%8A%E9%9D%A2%E6%96%87%E7%AB%A0%E7%9A%84%E4%B8%80%E4%BA%9B%E8%87%AA%E5%B7%B1%E7%9A%84%E7%90%86%E8%A7%A3.%20%E5%81%87%E5%A6%82%E7%BB%99%E5%AE%9A%E4%BF%A1%E5%8F%B7%20y%3D,%281.65%2C-0.25%29%20%E5%92%8C%20%E8%B6%85%E5%AE%8C%E5%A4%87%E5%AD%97%E5%85%B8A%3D%20%28d1%2Cd2%2Cd3%29%2C%20d1%EF%BC%8Cd2%EF%BC%8Cd3%E5%88%86%E5%88%AB%E4%B8%BA%E8%B6%85%E5%AE%8C%E5%A4%87%E5%AD%97%E5%85%B8%E4%B8%AD%E7%9A%84%E5%8E%9F%E5%AD%90%EF%BC%8C%E4%B8%94d1%3D%20%28-0.707%3B0.707%29%EF%BC%8Cd2%3D%20%280.8%3B0.6%29%EF%BC%8Cd3%3D%20%280%3B-1%29%3B匹配追踪算法（MP）简介.png)
https://blog.csdn.net/theonegis/article/details/78209711
分布式压缩感知的基础向内容梳理.png)
https://blog.csdn.net/qq_21044465/article/details/105802408
Orthogonal Matching Pursuit，正交匹配追踪。
加入了正交的步骤是使得求解内积时为0，不再重复计算残差，加快了算法的收敛速度。
多个信号，每个信号是一一个列向量
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