According to an expert, Fengyun-3 has a design life of five years and is equipped with advanced remote sensing instruments. In addition to five types of genetic instruments, such as microwave thermometer, microwave tidal current meter, microwave imager, space environment monitoring instrument package and global navigation satellite mask detector, infrared high-frequency atmospheric detector, near-infrared high-frequency greenhouse gas monitor, wide-angle aurora imager and ionospheric photometry are new developments. The resolution spectral imager in the core instrument has been upgraded to the first satellite, and its performance has been significantly improved.
Medium resolution spectral imager
One of the core instruments of FY-3 is the medium resolution spectral imager.
After upgrading, the instrument can be compared with the latest imaging instrument of the United States joint extreme orbit meteorological satellite and become one of the most advanced wide remote sensing instruments.
It is reported that the medium resolution spectrum integrates the functions of two imaging instruments of the original Fengyun-3 satellite. It is the first imaging instrument in the world to obtain the area data of infrared split window with resolution of 250 meters. You are no different every day. The global 250m resolution true color image has achieved high-precision quantitative response to clouds, aerosols, water vapor, land features and seawater, and provided scientific support for ecological management and restoration, environmental monitoring and protection in China, and provided China's plan for global ecological environment observation, disaster monitoring and climate assessment.
Infrared high frequency atmospheric vertical detector
The instrument adopts the most advanced Fourier interference detection technology in the world, which can realize the hyperspectral resolution of gas system, including 1370 channels.
According to reports, compared with the original Storm Knight, the number of spectral channels has increased by 70 times, and the spectral resolution is as high as 0.625 cm, which can improve the inversion accuracy of atmospheric temperature and atmospheric humidity profiles by more than 1 times, greatly improving the support ability of medium and long-term numerical weather forecast in China, and expanding the effective time limit of weather forecast for 2-3 days.
The high grating greenhouse gas monitor is a remote sensing instrument for monitoring the global greenhouse gas concentration.
"This instrument is more interesting." Zhang Peng said that the instrument can obtain the global concentration distribution and time variation of carbon dioxide, methane and carbon monoxide, and improve the quantitative estimation of regional greenhouse gas flux. Analyze and monitor global carbon sources, and provide scientific monitoring data of greenhouse gas emissions for the Paris Climate Conference.
"At the end of last year, China launched a carbon satellite. One of the tasks of carbon satellite is hyperspectral carbon dioxide monitoring. Carbon dioxide is the main parameter of global temperature rise, so it is very important to monitor global carbon dioxide. Fengyun 3 D high photoelectric greenhouse gas monitor can help us better understand the temporal and spatial distribution of global carbon dioxide. " Wide-angle optical imager and ionospheric photometer
There are two new instruments closely related to the space environment, wide-angle optical imaging and another ionization quantity plan.
Wide-angle optical imager is the first remote sensing instrument in the world that can acquire aurora images from space. Ultraviolet band can realize extreme ultraviolet band and aurora image, and the spatial resolution is about 130× 130. It can monitor 10 km, extraordinary light boundary position, global image of ionosphere and distribution of deposited electrons, report polar power and polar luminosity, polarization of deposited particles, as well as magnetic field prediction, magnetospheric prediction and ionospheric weather prediction in polar regions.
Ionization photometer can measure the angular radiation intensity of oxygen atoms and nitrogen molecules, and retrieve the parameters of electron concentration at night and oxygen-nitrogen ratio during the day, so as to realize the monitoring of ionospheric state change.