Details on the integration of remote sensing and GIS

Remote sensing and geographic information systems (GIS) are the two main technical applications of geographic information science. The difference between the two: Remote sensing refers to a technology and means that uses remote detection means (such as satellites, aircraft, etc.) to obtain images, spectra, sound waves and other information of objects on the ground or sea surface, and analyzes and processes these information to obtain objects on the earth's surface and their related information.

The main focus of remote sensing technology is the physical characteristics and spatial distribution of the earth's surface. Geographic Information System (GIS) is a comprehensive geographic science tool and application system that uses the principles and methods of computer science, geography, surveying and mapping to collect, store, manage, analyze and display spatial data. The main focus of GIS technology is to establish a geospatial database, and through the analysis and processing of these data, it can be used for spatial decision support and inference.

Dear Glad to answer this question for you. Geographic Information System (GIS) and Remote Sensing (Remote Sensing) are two different technical applications, and they have some differences in the acquisition and processing of geographic information. How to get information:

GIS obtains information through computers and software, while remote sensing uses remote detection means, such as satellites and airplanes, to obtain images of objects on the ground or sea surface, optical slag spectrum, sound waves and other information. Focus: GIS is mainly concerned with establishing geospatial data such as Sakura Library, providing spatial decision support and inference through data analysis and processing.

Remote sensing, on the other hand, focuses on the physical characteristics and spatial distribution of the earth's surface. Applications: GIS has a wider range of applications in science, business, and industry, including real estate, public health, crime mapping, defense, sustainable development, natural resources, landscape architecture, archaeology, community planning, transportation and logistics, and more.

Remote sensing technology has been widely used in agriculture, forestry, geology, oceanography, meteorology, hydrology, military, environmental protection and other fields.

Remote sensing is remote sensing, that is, satellites, airplanes and other carriers carry sensors to observe the ground, so as to provide data for observers; Geographic information systems, on the other hand, are more inclined to process and analyze the information obtained, and obtain results. Remote sensing is the study of data, for example, through remote sensing, the parameters of water quality can be reversed, such as the concentration of chlorophyll, the amount of COD, the amount of water temperature, etc., to obtain the required information; Geographic information systems tend to process, analyze, and manage information, such as overlay analysis, spatial analysis, thematic map, spatial database construction, etc., so as to draw conclusions. To put it simply, remote sensing is monitoring, and geographic information systems are mapping.

The specific work is also different, remote sensing is biased towards theoretical research and practical inversion calculation and other scientific research, and geographic information system is more about AE programming, database construction and other information processing work similar to the computer industry. I wonder if my answer will satisfy you?

The research level is different, people who learn geodemitry will learn remote sensing, and remote sensing is more biased towards a certain professional field. The local letter covers a wider range.

GIS is not only an applied engineering technology for managing and analyzing spatial data, but also an applied basic discipline across earth science, information science and space science. Its technical systems consist of computer hardware, software and associated methodological processes to support the acquisition, management, processing, analysis, modelling and display of spatial data in order to solve complex planning and management problems. Remote sensing, on the other hand, refers to non-contact, long-range detection technology.

Generally, it refers to the theory, method and application of science and technology that uses sensors and remote sensors to detect the radiation and reflection characteristics of electromagnetic waves of objects, and analyzes the nature, characteristics and state of objects according to their characteristics.

The essence is still different.

Shake sense (RS) is used to see, shoot some ** or something in space, eg: the growth of agriculture, can be different through the reflection of the underlying surface, and the ** can reflect the growth of crops.

The Global Positioning System (GPS) is used to determine the position, using coordinate positioning to determine the bearing and direction.

Geographic information system (GIS) is a system used for spatial query, analysis, simulation, statistics and so on. e.g. Land Use Planning, Simulated Cities, Urban Construction Planning.

The digital earth is a kind of comprehensive information equipped with 3S as the support and foundation, such as the computer, for human work, study, life and entertainment.

Absolutely original, I hope it helps you....

Remote sensing technology (surface scene acquisition) RS can be used for vegetation resource investigation, climate and meteorological observation and forecasting, crop yield estimation, pests and diseases, environmental quality monitoring, transportation route network and tourist attraction distribution.

GPS GPS is widely used in different fields such as military, civil transportation (ships, aircraft, automobiles, etc.), navigation, geodesy, photogrammetry, field expeditions, land use surveys, precision agriculture, and daily life (people tracking, leisure and entertainment).

GIS is a computer software system specializing in the management of geographic information, and is the "big steward" of the information obtained by the global positioning system and remote sensing technology. It has been widely used in resource investigation, database construction and management, land use and suitability evaluation, regional planning, ecological planning, crop yield estimation, disaster monitoring and forecasting, precision agriculture, etc.

3S is the high-tech required to build a digital earth and an information superhighway.

GIS needs to update data using remote sensing data; The recognition of remote sensing images needs to be supported by geographic information systems (GIS) to improve their accuracy and be applied in mathematical models. However, due to the limitations of satellite resolution and recognition technology, the accuracy of computer recognition of remote sensing images cannot meet the needs of updating large-scale thematic maps. The different data structures of remotely sensed images and commonly used geographic information systems also hinder the transmission of data between them. In the future, the resolution of the new generation of satellite images will be greatly improved, and the accuracy of computer recognition will also be significantly improved.

At the same time, significant progress has been made in the transformation from the raster data structure of remote sensing images to the vector data structure commonly used in geographic information systems. Therefore, the integration of remote sensing technology with GIS is not far off.

The integration of remote sensing technology (RS), geographic information system (GIS) and global positioning system (GPS) technology is also known as 3S technology. All 24 United States satellites for the Global Positioning System (GPS) were finally launched in June 1993. 3S technology will eventually build a new real-time or quasi-real-time acquisition and processing system of ground 3D information and geocoded images, forming a fast and high-precision processing process, which is of far-reaching significance to the development of remote sensing technology.