# # China successfully launched the Remote Sensing No.34 03 satellite.

At 9: 38 Beijing time in 2022 (165438+1October 15), China successfully sent the remote sensing satellite No.34 03 into space by the Long March IV C carrier rocket at Jiuquan Satellite Launch Center. The satellite successfully entered the scheduled orbit and the launch mission was a complete success. The satellite is mainly used in land survey, urban planning, land confirmation, road network design, crop yield estimation, disaster prevention and mitigation and other fields. This mission is the 450th flight of the Long March series of launch vehicles.

How did China successfully launch Remote Sensing No.34 03? Come and have a look with me.

Hundreds of stars shine in Pujiang, which is a quantitative change and a qualitative leap.

On June 5438+065438+1October 15, 2022, a bright flame broke through the sky, and the Long March 4 C carrier rocket successfully sent the remote sensing No.34 03 star into space, and the satellite accurately entered the scheduled orbit, and the launch mission was a complete success. The accusation hall burst into prolonged applause.

For Institute 509 of the Eighth Academy of China Aerospace Science and Technology Corporation, this star has another special meaning. It is the100th satellite developed and launched by 509 Institute, which witnessed the leap from "Shanghai Satellite started from scratch" to "People's Pharmacy River". 100 is not only a quantitative change, but also a qualitative leap, which shows the technology and strength of Shanghai satellite and highlights the responsibility and responsibility of accelerating the construction of a space power.

Casting bright stars is a development leap of "patriotic casting heavy objects"

From 65438 to 0969, Premier Zhou Enlai proposed that Shanghai should also engage in satellites, mainly the development and application of satellites. 101October 3 1 day, the central authorities of China, the State Council and the Central Military Commission issued the requirements for developing technical test satellites and meteorological satellites. 196965438+On February 8th, Shanghai organized a mobilization meeting for the July 1st Project. As the task of 1970 1, the engineering development of Changkong-1 satellite was officially started, and the overall work was undertaken by 509 predecessor workshops of Shanghai Steam Turbine Factory, thus Shanghai became an important satellite development base in China.

1975 in July, the long-awaited success finally came. Changkong-1 became the third satellite successfully launched by China and the first three-axis stabilized satellite successfully made its first flight in China. Shanghai satellite industry has made a difficult start.

In the 1980s, 509 meteorological satellites were fully developed, completing the leap from scientific experimental satellites to operational application satellites and becoming the cradle of meteorological satellites in China. 1977165438+1October, the first large-scale overall scheme demonstration meeting of China meteorological satellite project was named "77 1 1 meeting", which officially opened the era of meteorological satellites. 1988 Fengyun-1 A satellite was successfully launched, and then three Fengyun-1 satellites were launched one after another. Among them, Fengyun-1 C satellite was successfully launched on the 3rd day after the air attack on the Embassy of China in Yugoslavia on1May, 1999 10, and it performed well in orbit, so it was praised as "a competitive star" by Chinese people. It is the first operational meteorological satellite in China and one of the longest-lived in-orbit remote sensing satellites in China. It is listed as one of the three major events in China at the end of the 20th century and inscribed in the China Millennium Monument.

While developing low-orbit meteorological satellites, 509 Institute began to develop high-orbit meteorological satellites in parallel. 1997 successfully launched the high-orbit meteorological satellite Fengyun-2 A, followed by Fengyun-2 B. Although the two satellites failed to achieve operational application, they accumulated valuable experience for the follow-up satellites, making China the third country in the world with both low-orbit and high-orbit meteorological satellites. From 2004 to 20 18, China launched six Fengyun-2 satellites, each of which was successful. The long-term stable operation of Fengyun-2 satellite has aroused the burden of meteorological support for major national activities, served the national economy and benefited thousands of people in Qian Qian, and has become a model for the operation of civil satellites in China. On June 5, 20 18, Fengyun-2 H star was successfully launched.

In the new century, 509 microwave remote sensing satellites aim to overcome key technical problems and push China Earth observation system into a new stage. In 2006, Remote Sensing Satellite-1 was successfully launched, which was the first microwave remote sensing satellite in China, and realized all-weather and all-day high-resolution earth observation for the first time. China is also the second country in the world to successfully develop a medium resolution microwave remote sensing satellite. Since then, more than 30 microwave remote sensing satellites have been developed and launched, and the resolution has been upgraded to sub-meter level, which has played an important role in China's emergency disaster relief, ocean observation, agriculture and forestry monitoring, and earth mapping.

In the new era, Shanghai's satellite industry has entered a high-speed development stage of launching at least one new satellite every year, which witnessed the glorious course of China Aerospace's progress from a space power to a space power under the leadership of the Party. A number of satellites have been developed that lead the international and domestic technology or fill the gaps in this field: Fengyun-3 satellite has achieved the observation capability of "morning orbit+afternoon orbit+dawn and dusk orbit" for the first time in the world, Fengyun-4 satellite has achieved high-orbit atmospheric vertical detection and 250-meter resolution quantitative remote sensing for the first time in the world, hyperspectral observation satellite has opened a new era of hyperspectral observation in China, and atmospheric environment monitoring satellite has filled the gaps in international laser atmospheric remote sensing. 0 1 double-star group GEO-1 built the world's first L-band distributed SAR mapping double-star constellation, Pujiang-1 satellite was named after Shanghai regional elements for the first time, and Mars orbiter No.1 realized China's leap from the moon to Mars. Why did the experimental satellite of solar exploration technology open the "solar exploration era" in China? ...

Innovation drives the trend, which is the practice of "breaking the stone and opening the way"

From 0 to 100, it is not a simple numerical change; The development and launch of 100 satellite is not a simple digital repetition. Step by step, the satellites developed and launched by 509 adhere to the leap from low orbit to high orbit, from near-earth to interstellar, from scientific experiments to commercial applications, from single satellite to multi-satellite multi-orbit collaborative networking, and from following to parallel operation. The comprehensive efficiency and technical strength of satellites have reached the advanced level in the world. Chunhua Qiushi, 509 Institute won more than 10 national science and technology awards such as National Science and Technology Progress Award, China Industry Award and China Patent Gold Award, more than10 provincial and ministerial science and technology awards, and more than 300 management awards such as National Civilized Unit and Shanghai Mayor Quality Award.

In the same series of satellites, the performance of focusing on each star has made a new breakthrough. Although the first generation of low-orbit meteorological satellite Fengyun-1 has a relatively simple load, it is the first time to carry infrared remote sensing and visible light remote sensing in China. It is also the first time in China to adopt flywheel three-axis stability control, the first time to adopt offset momentum wheel control system, and the first time to install magnetic control system and omni-directional attitude capture system. From FY-1 to FY-3, LEO meteorological satellites have achieved a technological leap from two-dimensional remote sensing imaging to three-dimensional comprehensive atmospheric detection, from single optical detection to ultraviolet, visible light, infrared and microwave full-spectrum wide-spectrum detection, and from kilometer observation to hundred-meter observation. Fengyun-3 Li Xing, launched on July 5th, 2002/KLOC-0, is the world's first civil morning and evening meteorological satellite, which effectively improves the accuracy of weather forecast in China and even the world.

Through the development of Fengyun-2 and Fengyun-4, the high-orbit meteorological satellite has broken through the key technologies such as image navigation and registration, micro-vibration measurement and suppression, and the observation efficiency has increased by 20 times, the detection channel has increased by 3 times, the spatial resolution has increased by 4 times, the temporal resolution has increased by 2 times, and the amount of observation data has increased by 160 times. It is the first time in the world to realize the comprehensive observation of imaging observation and infrared hyperspectral atmospheric vertical detection. Fengyun-4 satellite has been a practitioner of meteorological satellite technology in China.

In the strategy of serving the country, we dare to aim at new fields and fill the application gap. For the first time in the world, the atmospheric environmental monitoring satellite has realized high-precision all-day detection of global carbon dioxide column concentration and active and passive detection of near-surface fine particles, which has provided high-precision remote sensing data support for China's "double carbon" strategy and air pollution prevention and control, filled the gap of international laser atmospheric remote sensing, and significantly enhanced China's international influence in the field of atmospheric remote sensing and laser. Land Exploration No.1 0 1 binary is loaded with advanced L-band multi-channel multipole synthetic aperture radar, which overcomes the key technologies such as high-precision and high-stability three-synchronization technology, high-precision satellite formation and strict return orbit control, and can achieve millimeter-level ground deformation measurement accuracy in space thousands of miles away and depict beautiful mountains and rivers in a more colorful way.

In scientific exploration, we have the courage to overcome basic technical problems for ten years. "Tianwen-1" Mars orbiter has overcome key technologies such as Mars braking capture and long-term autonomous management, realized ultra-long-distance measurement and control communication between fires, filled many gaps in the field of deep space exploration technology in China, and ensured the complete success of China's first autonomous Mars exploration mission. The "xi River" experimental satellite for solar detection technology applied magnetic levitation technology for the first time in orbit, which broke through the key technologies such as the overall design of the "static and dynamic isolation non-contact" satellite, the "master-slave coordination, complete decoupling" ultra-precision ultra-stable control, and a new type of large-bandwidth ultra-high-precision magnetic levitation actuator, verified the satellite's ultra-high pointing accuracy and ultra-high stability control index, and ensured the smooth progress of the solar Hα-band spectral imaging detection task.

Looking back on the road of struggling with hundreds of stars, set sail again now. Standing at the new starting point of the next 100 satellites, 509 Institute, as the main force of China's space technology research and satellite development and production, will actively respond to the Party's 20 major objectives and tasks, continue to tackle key technologies, greatly improve the comprehensive performance of satellites, and make greater contributions to accelerating the construction of a space power and promoting the progress of human civilization. For example, in the field of meteorological satellites, in accordance with the Party's 20th strategic plan of "actively participating in global climate change control", we will fully promote the demonstration and implementation of Fengyun-5 and Fengyun-6 satellites, speed up the construction of the third-generation Fengyun meteorological system, meet the needs of rapid and accurate monitoring of global meteorological disasters and multi-scale accurate weather forecasting, and contribute China's wisdom and China's strength to the building of a community of human destiny. In the field of planetary exploration, based on major planetary exploration projects, efforts are made to promote the demonstration and implementation of various tasks such as Mars sampling return and Jupiter system, and make greater contributions to promoting the construction of a space power and the progress of human civilization. At the same time, the 509 Institute will also keep up with the pace of satellite development and satellite application, seize the new opportunity of Shanghai's space information industry development, cultivate and create a new format of "satellite+"industry, absorb the new demand of satellite application, comprehensively enhance the satellite application capability, promote the ecological construction of satellite application industry, and make unremitting efforts to make Shanghai a source of space information technology innovation.

Author: Shi Bozhen

Photo: Eighth Academy of China Aerospace Science and Technology Corporation

Editor: Zhang Tianchi

China successfully launched the Remote Sensing No.34 03 satellite.

At 9: 38 Beijing time in 2022 (165438+1October 15), China successfully sent the remote sensing satellite No.34 03 into space by the Long March IV C carrier rocket at Jiuquan Satellite Launch Center. The satellite successfully entered the scheduled orbit and the launch mission was a complete success. The satellite is mainly used in land survey, urban planning, land confirmation, road network design, crop yield estimation, disaster prevention and mitigation and other fields.

This mission is the 450th flight of the Long March series of launch vehicles.

Photography: Wang Jiangbo