Inversion method for offshore secchi disk depth based on HICO simulation

A technology of water transparency and transparency, which is applied in the field of remote sensing, can solve problems other than the remote sensing inversion method of water transparency, and achieve the effect of accurate monitoring

Inactive Publication Date: 2016-10-26
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0004] In summary, domestic and foreign scholars have proposed some methods in terms of quantitative remote sensing inversion of w

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  • Inversion method for offshore secchi disk depth based on HICO simulation
  • Inversion method for offshore secchi disk depth based on HICO simulation
  • Inversion method for offshore secchi disk depth based on HICO simulation

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Embodiment Construction

[0019] The method for inverting the transparency of coastal water bodies based on HICO simulation of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] 1. Overview of the research area

[0021] In a preferred embodiment of the present invention, the research area is Sishili Bay and its adjacent sea areas, which are located in the northeast sea area of ​​Yantai City on the Jiaodong Peninsula, adjacent to the North Yellow Sea. Sishili Bay is connected to Yangma Island in the southeast, Zhifu Bay in the northwest, and the mouth of the bay in the northwest, with Kongtong Islands scattered among them. The coastline of Shishili Bay is about 25km long, with an area of ​​about 182km 2 , the water depth is 8-15m, and the average water depth is about 10m. It is an important mariculture area along the coast of northern China. Forty Mile Bay is a typical temperate bay, with an average annual temperature ...

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Abstract

The invention relates to the technical field of remote sensing, more specifically to remote sensing quantitative inversion of the secchi disk depth of an offshore sea area, such as bays and estuaries. An inversion method for the secchi disk depth based on HICO simulation comprises the following steps: (1) obtaining of actually-measured hyperspectral data and secchi disk depth data; (2) hyperspectral data processing; (3) spectral signature analysis; and (4) correlation analysis and construction of an inverse algorithm. Compared with a conventional measurement method for the secchi disk depth, the method is more suitable for inversing the offshore secchi disk depth based on an HICO satellite sensor. The method is convenient and enables the offshore secchi disk depth to be fast accurately monitored.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a remote sensing quantitative inversion of water transparency in coastal waters such as bays and estuaries. Background technique [0002] Seawater transparency (Secchi disk depth, SDD) refers to the maximum depth at which a Secchi disk placed in seawater can be seen. It can intuitively reflect the degree of clarity and turbidity of seawater, and is an important indicator in marine water quality surveys. Since Italian physicist Pietro Angelo Secchi invented the Secchi disk in 1865, the Secchi disk has been used to measure the transparency of seawater for more than 140 years. Although traditional measurement methods are relatively accurate, they are time-consuming and laborious, and are greatly affected by human factors. In addition, the traditional measurement method is obviously powerless for areas that are difficult for people and ships to reach, and this method cannot ...

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Application Information

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IPC IPC(8): G01N21/31G01N21/59
CPCG01N21/31G01N21/59
Inventor 禹定峰刘恩晓周燕李恒杨雷盖颖颖
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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