Research Reagents-China's first high-resolution optical stereo mapping satellite delivered
On the 30th, at the on-orbit delivery ceremony held by the Bureau of Science, Technology and Industry for National Defense, the No. 3 satellite was officially delivered by the research and development unit Aerospace Science and Technology Group to the main user, the National Surveying and Mapping Geographic Information Bureau. The users of the Ministry of Land and Resources, the Ministry of Housing, Urban and Rural Construction, the Ministry of Water Resources, and the Ministry of Agriculture will also use the data of the No. 3 satellite to serve the construction of the national economy.
The commissioning of the No.3 Satellite has broken the situation in China where it is necessary to purchase foreign commercial satellite image data extensively due to the lack of original surveying and mapping image data. Using the data of the No. 3 satellite, we can produce 1: 50,000 surveying and mapping products with higher accuracy, and at the same time carry out surveying and updating of 1: 25,000 and larger scale maps; we can complete surveying and mapping of the blank areas in western China and help the development of the western region It can carry out high-precision full-coverage geographic information mapping, monitoring and updating of the national coastal island geographical environment, and safeguard China's marine rights and interests; provide stable satellite remote sensing data for urban construction, agriculture, forestry, water conservancy, and ecological environment monitoring.
The Ziyuan-3 satellite was successfully launched at the Taiyuan Satellite Launch Center earlier this year. The on-orbit test results show that the satellite system functions and performance fully meet the development requirements, the key project performance is better than the index requirements, and the obtained images are clear. The accuracy of the elements of the internal and external orientations of the three-line array and multi-spectral camera is stable. After ground geometry inspection, the positioning accuracy has reached the international advanced level.
According to reports, all scientific and technological personnel of the No. 3 Satellite Project insisted on independent innovation, broke through many technical bottlenecks of remote sensing satellites, and created many domestic firsts. It is the first time to realize multi-angle and multi-spectral integrated stereo imaging of remote sensing satellites in China. The satellite is equipped with three full-color cameras for front-view, front-view and rear-view. The success rate of stereo mapping reaches 100%. It can simultaneously obtain full-color data better than 2.1 meters and multi-spectral data better than 6 meters. Through the integrated satellite-ground design, the quality of satellite remote sensing images in China has reached the international advanced level for the first time. It is the first time to realize the transmission of ultra-high code rate remote sensing data in China. In addition, through the use of technologies such as the whole-star three-level autonomous control system, the design life of low-orbit remote sensing satellites has been increased from 3 years to 5 years, which has greatly improved the application efficiency of China's earth observation satellites.
The "Resource No. 3 Satellite Data Management Rules" was officially released on the same day, marking the further standardization of data management for civil aerospace engineering in China. The rules are clear: the distribution of the data of the No. 3 satellite is managed by the National Defense Science and Industry Bureau; the China Resources Satellite Application Center is entrusted to carry out the data distribution of the non-surveying and mapping industry; the National Surveying and Mapping Bureau is responsible for the distribution and application of satellite data in the surveying and mapping industry; Free distribution is implemented; the National Defense Science and Industry Bureau manages satellite data international cooperation.
The No. 3 Satellite Project is a key scientific research project of China's civil aerospace during the "Eleventh Five-Year Plan" period. The project was approved and developed by the State Council in 2008 and is organized and implemented by the National Defense Science and Industry Bureau. The 5th, 8th, and China Resources Satellite Application Centers of China Aerospace Science and Technology Corporation are responsible for satellite development, carrier rocket development, and data reception and distribution, respectively. Innovative management of all departments gathers wisdom to solve problems, ensuring the successful completion of engineering tasks.
During the "Twelfth Five-Year Plan" period, the National Defense Science and Industry Bureau will continue to establish and improve the "Resources", "Fengyun", "Ocean" and other satellite series, promote the expansion of civil aerospace applications and improve service levels, to better meet national economic and technological progress , The new requirements of the national security and social development for the space industry.
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