Measuring method, system and device of geographical elements in sea area based on rs and gis
A technology of geographic elements and measurement methods, applied in the field of sea area geographic element measurement based on RS and GIS, can solve the problem of lack of efficient measurement of sea area geospatial elements, and achieve the effects of saving human and financial resources, rapid measurement, and improving work efficiency
Active Publication Date: 2019-11-08
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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However, there is currently a lack of methods that can efficiently measure geospatial elements of the sea area
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[0054] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0055] refer to figure 1 , the present invention is based on RS and GIS sea area geographic element measuring method, comprises the following steps:
[0056] Preprocess the remote sensing data, extract the data of the required area, and obtain the regional remote sensing data;
[0057] According to the regional remote sensing data, and refer to the geographic coordinate system to georeference the regional remote sensing data;
[0058] Establish a geographic database, and establish feature data tables, feature classes, and relational tables in the geographic database;
[0059] Load regional remote sensing data into the geographic database for analysis, and measure geographic elements through measurement tools to obtain measurement data.
[0060] In this embodiment, the geographic registration is realized through ArcGIS (ArcMap).
[0061] Furthe...
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The invention discloses an RS and GIS-based sea area geographic element measurement method, system and apparatus. The method comprises the steps of preprocessing remote sensing data, and extracting data of a required area, thereby obtaining area remote sensing data; performing geographic registration on the area remote sensing data by reference to a geographic coordinate system; establishing an element data table, element classes and a relationship table in a geographic database; and loading the area remote sensing data in the geographic database to perform analysis, and performing geographicelement measurement through a measurement tool to obtain measurement data. Through an RS system and a GIS, standard, accurate and quick measurement of geographic elements of a large-area sea area in different periods is realized, so that the manpower and financial resources of field measurement are reduced and the working efficiency is greatly improved; and the geographic elements of the sea areain historical periods can be recorded, so that data analysis and research work is facilitated. The measurement method, system and apparatus can be widely applied to the geographic spatial measurement.
Description
technical field [0001] The invention relates to the technical field of geographical measurement, in particular to a method, system and device for measuring geographical elements in sea areas based on RS and GIS. Background technique [0002] The 21st century is the century of the ocean, and the on-site observation of marine elements has far-reaching significance for many aspects such as oceanographic research, marine engineering construction, and maritime defense security. For example, the dramatic changes in climate in recent years are precisely the result of the combined action of the atmosphere and the ocean, and are greatly affected by the ocean, because the surface layer of the ocean stores more than 1,000 times more heat than the atmosphere. The amount of heat stored in the ocean is affected by conditions such as ocean currents and salinity. Measuring salinity allows researchers to understand changes in ocean currents and rainfall over the ocean to study their impact o...
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IPC IPC(8): G06F16/29G01C11/00
CPCG01C11/00
Inventor 余景胡启伟陈丕茂
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI