China’s High Orbit Imaging Satellite Placed into Use after Six Months in Orbit
The first high orbit remote sensing satellite of China the Gaofen-4 is placed into use after being in orbit for six months for testing. According to the State Administration of Science, Technology and Industry for National Defense, that Gaofen-4 is the first geosynchronous orbit high definition optical imaging satellite and the most sophisticated in the world.
Compared to Gaofen-1 and Gaofen-2 that re in low orbit around the world, Gaofen-4 is orbiting at 36,000 kilometers above the earth. High orbit satellites have a better advantage of snapping grand scenarios, while low orbit satellites can see more detail and at a much faster speed. Although low orbit satellites can’t follow natural disasters, Gaofen-4 wil be able to continuously observe a disaster since it will be moving synchronously with the earth, thus improving the response to disasters such as earthquakes, typhoons and landslides with its high precision sensors.
Gaofen-4 was launched in December last year, with a lifespan design of eight years, compared to other remote sensing satellites that remains in services for less the three to five years. in its orbit test, Gaofen-4 used to collects images of flood hit areas in south China and monitored fires in the Sichuan province in southwest China and parts of Russia.
The Gaofen project was started at the same time the Gaofen-1 was launched in 2013, with the aim of launching seven more high definition satellites before 2020 that will be used of disaster prevention,monitoring of geological and forest disasters ans weather forecasting.