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Sea ice information extraction method

A technology of information extraction and interglacial channels, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problem of low accuracy of sea ice information, achieve the effect of improving utilization rate, accurate sea ice information, and simplifying calculation steps

Active Publication Date: 2021-12-03
TONGJI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for extracting sea ice information in order to overcome the defects of the above-mentioned prior art, which solves the problem that the accuracy of sea ice information is not high at present

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Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0056] This embodiment discloses a sea ice information extraction method, the flow chart is as follows figure 1 shown, including:

[0057] Step S1. Use the multi-beam single-photon laser altimetry satellite to obtain the initial photon height, and perform geophysical correction on the initial photon height. The geophysical correction formula is:

[0058] h=h ph -h ocean_tide -h lpe_tide -h IB

[0059] In the formula, h represents the corrected photon height, h ph Indicates the photon height measured by the satellite, h ocean_tide 、h lpe_tide Indicates the ocean tide-corrected...

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Abstract

The invention relates to a sea ice information extraction method, which comprises the following steps of: preprocessing acquired photon data, further classifying sea ice information in combination with a calculation result, calculating a sea ice freeboard height value according to a classification condition, optimizing an existing accumulated snow depth measurement model result, and according to other sea ice information parameters, calculating the sea ice thickness value by combining the Archimedes law, a linear regression function and other calculation formulas. Compared with the prior art, after the satellite initial data are corrected, subsequent processing and screening are carried out by using relatively accurate data, the data are further limited, and the utilization rate of the data is improved.

Description

technical field [0001] The invention relates to the field of sea ice information monitoring, in particular to a sea ice information extraction method. Background technique [0002] The environmental change in the polar region is an important monitoring indicator for global climate change. Sea ice is one of the most important natural phenomena in the polar region, which strongly restricts the heat exchange between the sea and the air, thus regulating the Arctic climate and even the northern hemisphere climate. The position and movement of the sea ice edge, sea ice density, sea ice thickness, and sea ice type are important parameters for the study of sea ice dynamics, thermodynamics, and climate. In view of the various research methods of polar sea ice information extraction, the traditional information extraction methods all have problems in measurement range and accuracy. At present, the single-photon laser altimeter with high precision and convenient measurement has a good ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
CPCG01B11/06Y02A90/10
Inventor 谢欢郭亚磊刘小帅徐琪李彬彬孙媛唐鸿金雁敏刘世杰柳思聪冯永玖童小华
Owner TONGJI UNIV
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