The main features of the FRF of long span Runyang Bridge, which has 1 024 dimensions, can be extracted by 27 or 17 principal components, and the reconstruction error is acceptable.

 
  • 对于大跨斜拉桥(润扬长江大桥北汉斜拉桥)的1024维频响函数可以仅用27个(或17个)主元来提取其主要特征,精度可满足工程需要。
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