What disasters can remote sensing satellites prevent?

Remote sensing satellites can prevent floods, droughts, earthquakes, typhoons, marine disasters and other disasters.

As follows:

Remote sensing satellite is an artificial satellite used as a remote sensing platform for outer space. Satellite-based remote sensing technology is called satellite remote sensing. Usually, remote sensing satellites can run in orbit for several years. Satellite orbit can be determined according to needs.

Remote sensing satellites can cover the whole earth or any designated area within a specified time. When it runs in geosynchronous orbit, it can continuously remotely sense the designated area of the earth's surface.

All remote sensing satellites need a remote sensing satellite ground station. Satellite data obtained from remote sensing market platform can monitor agriculture, forestry, ocean, land, environmental protection and meteorology. There are three types of remote sensing satellites: meteorological satellites, land satellites and ocean satellites.

1975165438+1October 26th, China launched the recoverable remote sensing satellite for the first time. By 1992, 13 satellites had been launched. The nature of this satellite is the same as that of the earth resources satellite, but its working life is short, only 5 ~ 15 days, but it can be recycled.

It is a small elliptical low-earth orbit with perigee of 175 km ~ 2 10 km, apogee of 320 km ~ 400 km, inclination of 57 ~ 70 degrees and period of 90 minutes. The coverage area of satellite observation is between 70 degrees north and south latitude, covering an area of about 20 million square kilometers, which is about the width of two maps of China.

The satellite has a diameter of 2.2m, a height of 3.14m and a conical shape, and weighs1800kg ~ 2100kg. Remote sensing instruments, such as spaceborne visible light camera, can obtain a large number of photos of earth observation, which has the advantages of high resolution, small distortion and moderate scale.

It can be widely used in scientific research and industrial and agricultural production, including land survey, oil exploration, railway route selection, marine coastal mapping, map mapping, target positioning, geological survey, power station site selection, earthquake prediction, grassland and forest area survey, historical relics archaeology and other fields. 65438+1At 4 p.m. on August 9, 1992, China launched a recoverable remote sensing satellite, and its working life has been extended to 15 days.