China News Agency, Beijing, July 16 (Ma Shuisha) At 6:57 on July 16, Beijing time, China successfully launched the Siwei 03/04 satellite (also known as: Four-dimensional high-view No. 2 stars 01 and 02).
At 6:57 on July 16, Beijing time, China used the Long March 2C carrier rocket at the Taiyuan Satellite Launch Center to successfully launch the Siwei 03/04 satellites into space.
Photo by Zheng Bin
The two satellites launched this time are two high-resolution commercial remote sensing satellites of China Siwei Surveying and Mapping Technology Co., Ltd. (hereinafter referred to as China Siwei), a subsidiary of China Aerospace Science and Technology Corporation, developed by the Fifth Academy of Aerospace Science and Technology Corporation.
Satellites mainly serve emerging markets such as urban security, real-world 3D, urban information modeling, and digital agriculture, as well as traditional fields such as land surveying and mapping, disaster prevention and mitigation, and maritime monitoring, providing users with time-efficient, high-performance spatiotemporal information services.
SiDaojing-1 01 and 02 satellites were successfully launched on April 29, 2022.
Siwei 03/04 satellites are the second group of satellites of China Siwei's new generation commercial remote sensing satellite system.
After the satellite is put into use, it will significantly improve the system's data acquisition and information service capabilities, marking the complete success of the first phase of the system's construction.
In May 2020, China Siwei launched the demonstration of a new generation of commercial remote sensing satellite systems. The space segment plans to launch a total of 28 satellites of "16+4+8", and synchronously build and match the ground segment based on the "Siwei Cloud" (including measurement and control, receiving, processing, etc.). , application), which can be expanded to 56 satellites in the future according to market development.
At 6:57 on July 16, Beijing time, China used the Long March 2C carrier rocket at the Taiyuan Satellite Launch Center to successfully launch the Siwei 03/04 satellites into space.
Photo by Zheng Bin
It is reported that the system will be fully completed in 2025. At that time, it will have a high revisit capability of 25 times a day around the world, a high collection capability with a daily collection area of more than 30 million square kilometers, and an emergency delivery capability within 2 hours.
The Long March 2C carrier rocket is a normal temperature liquid carrier rocket developed by the First Academy of Aerospace Science and Technology Group.
In this mission, the rocket adopts a two-stage state configuration with a total length of about 45 meters and a take-off mass of about 242 tons.
In this mission, the Long March 2C carrier rocket provided a customized "special car" service, using an extended 3.35-meter diameter fairing to make the satellite "ride" more comfortable.
In addition, the rocket adopts the efficient and simple short-time multi-satellite separation technology. Compared with the traditional attitude adjustment separation scheme, it can maximize the carrying capacity, maximize the available satellite measurement and control time, and has better far-field security, reducing dedicated attitude adjustment. The matching of the system can simplify the measurement and launch process of the launch site and reduce the launch cost.
This launch is the 427th launch of the Long March series of carrier rockets.
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