China unveils first images from SDGSAT-1 satellite


A group of images taken by China’s SDGSAT-1 satellite to help meet the United Nations Sustainable Development Goals (SDGs) was unveiled in Beijing on Monday.

This is the first time that satellite images have been broadcast after its launch on November 5 from the Taiyuan satellite launch center in northern China’s Shanxi province.

SDGSAT-1 used three different imagers to take remote sensing images, showing the population density in the cities of Beijing, Shanghai and Paris, and the environmental conditions in places such as the Yangtze River Delta in the eastern part of the China and Namtso Lake on the Qinghai-Tibet Plateau in southwest China.

It is the very first Earth data satellite to help achieve 17 goals of the “2030 Agenda for Sustainable Development” set by the UN in 2015 to stimulate actions aimed at solving social, economic problems. and environmental for humanity and the planet.

The photos were taken by the satellite’s thermal, scintillating and multispectral infrared imagers which can operate in multiple modes and in all weather conditions to accurately observe environmental changes on Earth related to human activities such as urbanization, housing and energy consumption.

The Chinese Academy of Sciences (CAS), the host of the science project, released details of the imagers on Monday.

The glittering imager showed the level of socio-economic development and population structure, according to a press release. It has a panchromatic band and three color bands with spatial resolutions of 10 and 40 meters. Its data, combined with business, social and human data, can help achieve the United Nations SDGs related to building sustainable cities and communities as well as protecting underwater creatures.

The multispectral imager has seven bands and its spatial resolution is 10 meters. The CAS said the data provided by such an imager with a high signal-to-noise ratio (SNR) would help monitor water quality, the coastal ecosystem, glacier changes and land creatures.

The thermal infrared imager has the new design of three bands and a spatial resolution of 30 meters. Its working width is about 300 kilometers, and can detect the temperature difference of 0.2 degree Celsius.

The CAS said it can be used for accurate monitoring of the surface temperature of land and water, and offers baseline data for crop growth, energy consumption, and forecasting of water. appearance of pests and diseases.

(CGTN’s Liu Wei also contributed to the story.)


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