Which way should China go for the development of commercial space? For the majority of the people, every time they mention commercial space, the first thought of the space exploration and technology companies, blue origin companies and other emerging space enterprises, especially the new concept of the new concept of large thrust Rockets have been launched, a huge impact on the traditional space launch market. Chinas rocket technology has a long way to go compared with the US commercial Rocket Company, who is standing on the shoulders of space giant NASA. Will the commercial space launch launched by the us be suitable for China? Many people believe that perhaps satellites and spacecrafts from China are more likely to participate in commercial satellite development. Xing Qiang, the founder of small rocket studio and WeChat public number small rocket, told the Global Times reporter on 24 days that the development speed of small satellite enterprises will be faster than commercial rocket enterprises, which are influenced by the demand of funds, the design cycle and the characteristics of the supply chain. But different from the west, because of various reasons, the satellite developed by China is difficult to use other countries to launch commercial launch in the international market, which requires the Chinese commercial launching capability to develop synchronously. He thinks, from the point of view of market demand, the satellite application should be vigorously developed in the future. Only the satellite application is done, the society needs more satellites, and more satellite launch needs will be needed to have larger, more and cheaper rockets. Therefore, China should introduce more popular application systems and products, such as communication, remote sensing, navigation, and so on, to promote the demand for space-based satellites, and thus promote the development of the whole industry, such as satellite development, manufacturing and launch vehicle launch. Behind the development of small satellite constellations in various countries is the dispute between orbit and spectrum. In the field of commercial satellites, the most popular project in recent years is the star chain plan put forward by space exploration technology company. The first step of the plan is to launch up to 1600 microsatellites to achieve satellite based space-based Internet, and the final plan is to use more than 12 thousand microsatellites running in the middle and low orbit to cover the global satellite network. In February 2018, the first batch of two verification stars of the plan was successfully launched. In addition, Google and other American companies have proposed similar microsatellite plans, which are equally amazing, ranging from hundreds to thousands. While developing prospects for small satellite constellations, professionals have also raised a series of concerns from the preoccupation of resources to the threat of space junk. Xing Qiang said that the outside worlds first concern is that these tiny satellite constellations plan to hide the horse race enclosure of space orbit resources. He said that the space orbit can hold a limited number of satellites, although the United Nations related organizations to coordinate and manage, but in the future, there will be first come first position of the occupying position. In fact, in the earths geostationary orbit 36 thousand kilometers from the ground, there has been a robbing seat phenomenon, and finally has to rely on the International Telecommunication Union to coordinate. However, there are only a few spaceflight powers that have the ability to send satellites into the earths geostationary orbit. In contrast, the orbit of the microsatellites is mostly 300-1000 kilometers, and more countries and even some commercial launching companies have the ability to send satellites into the near earth orbit, coupled with the encouragement of the rich profit of the satellite market. The competition will be much more intense. In addition to orbital resources, the frequency of satellite communications is also the focus of the dark space war. Xing Qiang said that both the communication satellite, the remote sensing satellite and the navigation satellite all need to transmit data in a specific range of radio frequencies. But it is embarrassing that if two satellites use the radio frequency close to each other, even if their location is not adjacent or far away from each other, they will interfere with each other. In this sense, frequency competition is more sensitive than track competition. In the context of such a fierce competition in the track and frequency resources, the small satellite constellations of American commercial companies are likely to launch thousands of satellites. It is no doubt that it is natural to take more satellites and take advantage of the resources. Xing Qiang, taking large communications satellites as an example, says that its life is usually 15 years, and at the end of its life, the ground commanders will fly away from the track and enter a special cemetery track. The vacant location must be redistributed according to international rules. However, small satellite constellations are completely different. Although the service time of each small satellite may be only a few years or even a few months, it can be supplemented by new satellites. In theory, the orbit and frequency resources occupied by the whole constellation are without time limit. The GPS system, he says, is such a pattern - although the GPS constellation needs 24 satellites in theory, in the course of decades of development, the number of satellites that verify the satellite and complement the orbit of the satellite has already exceeded the theoretical value and has started the third generation of navigation constellations in the original orbit. According to Yuan Hui, because of the limited track and frequency resources, we should try to win the share as much as possible when we have the corresponding ability, so that there is space for the follow-up development. At present, China has also launched the global low orbit satellite constellation Hongyan, planning to launch more than 300 satellites to provide access to satellite internet access services at anytime and anywhere, the first star plans to launch this year. How does space garbage break Another concern of the Micro Satellite Constellation program is the space junk problem. Because the single satellite of the microsatellite has short life and relatively low reliability, a large number of decommissioning or malfunctioning satellites will be generated. Once the treatment is not properly handled, it will become a continuous source of space garbage. Xing Qiang suggested that in the future, small satellites could be added to their functions to enable them to automatically enter the dense atmosphere at the end of their service. Considering the small volume and quality of small satellites, they can basically be burned in the atmosphere, and the threat of debris falling to the ground may be minimal. He stressed that the Small Satellite Constellation program would bring new challenges and risks to the global times, and that countries in the world should join together to develop rules to prevent vicious competition in earth orbit and protect the space environment. The source of this article: Global Times - global network. More brilliant, please log on to World Wide Web http://www.huanqiu.com responsible editor: Zhang Zutao _NT5054 Another concern of the Micro Satellite Constellation program is the space junk problem. Because the single satellite of the microsatellite has short life and relatively low reliability, a large number of decommissioning or malfunctioning satellites will be generated. Once the treatment is not properly handled, it will become a continuous source of space garbage. Xing Qiang suggested that in the future, small satellites could be added to their functions to enable them to automatically enter the dense atmosphere at the end of their service. Considering the small volume and quality of small satellites, they can basically be burned in the atmosphere, and the threat of debris falling to the ground may be minimal. He stressed that the Small Satellite Constellation program would bring new challenges and risks to the global times, and that countries in the world should join together to develop rules to prevent vicious competition in earth orbit and protect the space environment.