"It is estimated that if the on orbit satellite of Tiandi Internet can provide on-demand intelligent sharing services for all walks of life, its input-output ratio can reach one to ten." At the 2023 Global Shared Constellation Conference held recently, Li Deren, an academician of the CAS Member, the CAE Member, and a professor of Wuhan University, pointed out that intelligent satellites using software definition technology have the conditions to "make the best use of everything", It has the potential to invest 100 million yuan to create 1 billion yuan in value. From the overall perspective of the aerospace industry chain, the development and launch of rockets and satellites account for 20-30% of the total volume of the chain, with about 70% coming from applications. It can be seen that if the applications are not done well, the value of the preliminary work will not be fully demonstrated. "Sun Laiyan, the chairman of the supervisory board of state-owned key large enterprises, stated that the entire satellite industry chain will eventually" land and bloom "in application, and attention should be paid to research on application technology to drive the development of the entire industry. So, how can satellites provide intelligent sharing services and achieve "maximizing the use of resources"? How to fully explore the potential value of in orbit satellites and truly activate the commercial satellite industry? The number of satellites is huge, and there is an urgent need for intelligent activation. "Traditional satellites are isolated systems aimed at professional users, with serious deficiencies in openness and sharing." Li Deren introduced that the information in space is processed through traditional processes such as operation control, imaging, reception, processing, and distribution, resulting in less effective information and obvious delays, which cannot meet the needs of commercial applications. "At present, satellites can obtain accurate time, space and location information, as well as crop growth status, hydrology, glaciers, atmosphere and other elements of the natural environment, but the use threshold is high, and it can not be obtained at any time." Jin Shuanggen, a researcher at the Shanghai Astronomical Observatory of the Chinese Academy of Sciences and an academician of the Academia Europaea, explained that, on the one hand, due to the high cost, on the other hand, physical satellites have been bypassing, Only the 'window period' at the specified location can obtain useful information, and there is a large number of 'empty window periods'. How to achieve large-scale commercial applications? Building intelligent, interconnected, and shared satellite systems using software definition technology is crucial for commercial applications. Li Deren introduced that lightweight, scalable, reconfigurable, and universal are all characteristics of intelligent satellites. With the iterative upgrade of satellite systems and the implementation of business capabilities such as ground upload and installation software, the utilization of satellite data can be achieved on mobile phones. "The process of mobile phone intellectualization has brought enlightenment to satellite intellectualization, and the choice of software definition technology is the key to determining the application prospect." Zhao Junsuo, a researcher of the Institute of Software of the Chinese Academy of Sciences and Secretary General of the Software Definition Satellite Technology Alliance, said that currently 26 provinces in China have their own civil commercial satellites, with a deployment scale of more than 10000. These satellites need to use software definition technology to activate their huge potential, that is, to carry open platforms in planning and design, Establish a unified network, programming interface, support software definition functions, and support interconnectivity. Sharing strategy, satellite "order grabbing" service for ordinary users, which means that a single tree is difficult to grow into a forest. The application function of a satellite will exert greater efficiency and achieve more comprehensive and efficient perception and decision-making in the "constellation" mode. For example, in monitoring the ecological environment of the Yangtze River Basin, we used shared data from 130 satellites, which can not only obtain high spatiotemporal resolution