What Is GIS Remote Sensing?

Geographical remote sensing usually uses the corresponding remote sensing technology to collect relevant spatial environment data, and simply classifies them, and then uses the geographic information system to process and analyze the collected spatial data.

With the rapid development of computer software technology and aerospace technology, geographic remote sensing information technology has become an important means for people to understand and detect geographic information, and has been well applied in environmental impact assessment. At the same time, it has been used in environmental management and resource development. Plays a role that cannot be ignored,

Remote sensing technology and geographic information system

Geographical remote sensing principle

Prediction is based on objective facts that existed in the past and present, and infers the possibility of future events through analysis, deduction, reasoning, assumptions and simulations.

Geographical remote sensing prediction research, based on remote sensing information, based on the principles of remote sensing, through the processing and analysis of various forms of remote sensing images and data, reveals the inherent relationship of the geographical environment and the occurrence and development of geographical processes. Geographical remote sensing prediction can be simply expressed as shown in the figure.

Geographical remote sensing prediction

Geographical remote sensing significance

Geographical environment has great complexity in spatial distribution and great variability in time series. Changes in any one of these factors may cause changes in other factors. This change can happen anytime, anywhere.

The development of remote sensing technology provides a broad prospect for the monitoring and forecasting of this geographical environment. Remote sensing has the advantages of large coverage area, rapid, accurate, comprehensive, and real-time information acquisition, so it plays a very important role in geographic prediction. It can be seen that the remote sensing method of geographic prediction can not only provide comprehensive and accurate prediction results, but also has a speed unmatched by other geological prediction methods.

Geographical Remote Sensing Research Status

At present, most countries are conducting research on geographic prediction using remote sensing technology. Among them, the most frequent, universal and more accurate and practical applications are weather forecasting using meteorological satellite data, including terrestrial weather forecasting (for industrial and agricultural production, transportation, aerospace and people's daily activities) and marine weather forecasting (for Navigation, marine transportation, etc.).

In the United States, satellite data were used to analyze snow changes in the upper Mississippi region for three consecutive years, accurately forecasting water regimes in the basin, and reducing agricultural losses; the former Soviet Union used satellites to photograph snow changes in the Tianshan Mountains and the Pamirs in China, and forecasted extreme changes in 1969. During the spring flood season, satellite data was also used to carry out forecasting and forecasting work in agriculture, navigation, forestry, water conservancy, fishery, etc., and catastrophic weather forecasting was performed in a timely manner. The UK used SPOT images to forecast the evolution of urban land cover. ^[3]