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REMOTE SENSING OF THE EARTH BY SATELLITES



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REMOTE SENSING OF THE EARTH BY SATELLITES 
P.Ibragimova (master student, TUIT named after Muhammad Al-Khwarizmi), 
N.Davronbekov
 (
master student, TUIT named after Muhammad Al-Khwarizmi)
Remote sensing of the Earth (RSE) - observation of the Earth's surface by 
ground, aviation and space vehicles, equipped with various types of imaging 
equipment. 
Earth remote sensing spacecraft are used to study the natural resources of the 
Earth and to solve meteorological problems. Spacecraft for the study of natural 
resources are equipped mainly with optical or radar equipment. The advantages of 
radar equipment are that it allows you to observe the Earth's surface at any time of 
the day, regardless of the state of the atmosphere. 
Examples of remote sensing applications include monitoring deforestation 
(for example, in the Amazon basin), the state of glaciers in the Arctic and 
Antarctic, and measuring the depth of the ocean using a lot. Remote sensing is also 
replacing expensive and relatively slow methods of collecting information from the 
Earth's surface, while at the same time guaranteeing human non-interference in 
natural processes in the observed territories or objects. 
Remote sensing of the Earth's surface refers to the observation and 
measurement of the energy and polarization characteristics of radiation from 
objects in different ranges of the EM spectrum in order to determine the location, 
type, properties and temporal variability of environmental objects without direct 
contact with a measuring device. 
Figure: 1. Earth scanning methods 


128 
Remote sensing has a wide range of applications, primarily in the military 
sphere. In the non-military field, most applications fall into the environmental 
research category: 
1. Atmosphere: temperature, precipitation, distribution and type of clouds, 
concentration of gases, etc. 
2. Earth's surface: topography, temperature, albedo, soil moisture, type and 
condition of vegetation, anthropogenic loads. 
3. Ocean: temperature, topography, water surface color, etc. 
4. Cryosphere: distribution, state and dynamic movements of snow, sea ice, 
icebergs, glaciers. 
One of the most important characteristics of remote sensing is the ability to 
accumulate data on a large area of the earth's surface or volume of the atmosphere 
in a short period of time, obtaining an almost instantaneous image 
Currently, remote sensing data is a source of relevant and operational spatial 
information and is widely used to solve various thematic problems. 

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