A high-precision channel reconstruction method based on multi-satellite source information coupling

A high-precision, waterway technology, applied in water resources assessment, climate sustainability, instruments, etc., can solve the problems of inability to obtain topographic data, inability to obtain resolution at the same time, and inability to achieve high-precision surveying and mapping, etc., so that it is suitable for popularization and use , improve vertical and plane accuracy, good economic and social benefits

Active Publication Date: 2021-07-02
BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION
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Problems solved by technology

At present, the plane resolution of high-precision panchromatic orthophotos can reach within 50cm, and the vertical resolution of radar altimeters or laser altimeters can reach within 10cm. The plane and elevation information of these two types of satellites often cannot be obtained or distinguished at the same time. The most advanced satellite three-dimensional image (GSM) has a plane and vertical resolution of tens of meters, and it cannot meet the requirements of high-precision surveying and mapping when used alone
[0003] With the advancement of technology, the plane or vertical resolution of satellites will be further improved. However, no matter what kind of satellites can only carry out plane or elevation information observations above the water surface, they cannot obtain terrain data below the water surface.

Method used

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Embodiment Construction

[0048] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] A high-precision water channel reconstruction method based on multi-star source information coupling. The technical solutions adopted include the method of determining the water channel section, the high-precision coupling reconstruction method of the basic water channel section, the coupling reconstruction method of the fixed channel section, and the topographic reconstruction of the river section. structure method.

[0050] According to the characteristics of the river to be carried out for water channel observation, select the river section close to the revisited position by various types of satellites, and determine the river cross section where t...

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Abstract

The invention provides a high-precision water channel reconstruction method based on multi-star source information coupling. refactoring method. The invention fills the blank of surveying and mapping waterways based on satellite remote sensing information, greatly improves the vertical and plane accuracy of existing satellite digital surface models for river waterways, and can provide decision-making support for wading emergency rescue in areas lacking data.

Description

technical field [0001] The invention relates to the technical field of waterway surveying and mapping applications, in particular to a high-precision waterway reconstruction method based on multi-star source information coupling. Background technique [0002] Due to the different purposes of satellite remote sensing, the plane or vertical resolutions are quite different. At present, the plane resolution of high-precision panchromatic orthophotos can reach within 50cm, and the vertical resolution of radar altimeters or laser altimeters can reach within 10cm. The plane and elevation information of these two types of satellites often cannot be obtained or distinguished at the same time. The most advanced satellite three-dimensional image (GSM) has a plane and vertical resolution of tens of meters, and it cannot meet the requirements of high-precision surveying and mapping when used alone. [0003] With the advancement of technology, the plane or vertical resolution of satellit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C7/06
CPCG01C7/06Y02A90/30G01C13/002G06T7/55G06T7/521G01C13/00G06T17/05G06T2207/10032G06T2207/30181
Inventor 熊明
Owner BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION
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