A similarity discrimination method for medium and small river basins based on flood peak reference set

• Main Authors: ZHAO QUN, WAN DINGSHENG, ZHOU JINYU, RUAN XIANGCHAO, SHI BO, SHEN QIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a similarity judging method of small and medium-sized river basin based on flood peak reference set. Firstly, the flood peak is segmented and the flood peak mode is extracted,that is, the start and end points of the flood peak process segmentation are found according to the variation trend of the water level data, and the water level sequence between the start and end points is adopted to represent the flood peak mode. Then the flood peak reference set is trained: the preset number of flood peak pattern sequences are selected from the flood peak pattern set by using the maximum filtering method, the maximum distance variance selection and the minimum correlation selection in turn as the flood peak reference set; Finally, DTW distance is used to measure the distancebetween the flood peak reference concentrated flood peak model series of the watershed to be inquired and other watersheds, to judge the similarity of the time series, and the watershed with the highest similarity in the floo