Core Viewpoint - The article discusses the successful implementation and ongoing development of the Meridian Project, which focuses on monitoring and forecasting space weather to ensure the safety of spacecraft and the stability of high-tech systems [1][3]. Group 1: Project Overview - The Meridian Project, officially known as the "Ground-based Comprehensive Monitoring Network for Space Environment," aims to monitor changes in the solar-terrestrial environment and enhance China's capabilities in space weather research and application [3][4]. - The project has established a comprehensive monitoring network consisting of 31 stations and 282 monitoring devices, making it the most extensive and capable ground-based monitoring network for space environment internationally [4][5]. Group 2: Technological Innovations - The project has faced challenges in acquiring large equipment and advanced technologies, leading to increased efforts in independent research and development [2]. - Innovations include the development of a large-aperture laser radar system in Hainan, which utilizes metastable helium atoms to monitor the upper atmosphere over thousands of kilometers [2]. Group 3: Future Plans - The project aims to implement the International Meridian Circle Scientific Program, establishing a complete monitoring chain from 120 degrees East to 60 degrees West, facilitating all-latitude and all-weather observations of the solar-terrestrial environment [5]. - The goal is to provide scientific support for global responses to space weather disasters and the peaceful utilization of outer space [5].

Core Insights - The "Ziwuyuan Project" has significantly improved China's capabilities in space weather monitoring and research, directly impacting the safety of spacecraft and high-tech systems [1][4]. Group 1: Project Overview - The Ziwuyuan Project, officially known as the "Ground-based Comprehensive Monitoring Network for Space Environment," aims to monitor changes in the solar-terrestrial environment and enhance China's research and application capabilities in space weather [4]. - The project consists of 31 stations and 282 monitoring devices, making it the most comprehensive ground-based monitoring network for space environment globally [4]. Group 2: Technological Innovations - The project has developed a unique monitoring architecture characterized by a complete observation chain from the sun to the Earth's surface, a "three-network" layout, and a focus on four key regions [1][4]. - Innovations include the development of a large aperture laser radar system to monitor the upper atmosphere, showcasing the team's ability to adapt and optimize technology in challenging conditions [2]. Group 3: Future Plans - The project aims to implement the International Ziwuyuan Grand Scientific Plan, establishing a global space environment monitoring network and enhancing the project's role in various applications [3][4]. - Future efforts will focus on improving data processing software for large monitoring devices and expanding the monitoring capabilities to provide comprehensive observations of the solar-terrestrial environment [3].

Core Insights - The "Ziwuyuan Project" has significantly improved China's capabilities in space weather monitoring and research, directly impacting the safety of spacecraft and high-tech systems [2][5]. Group 1: Project Overview - The Ziwuyuan Project aims to monitor changes in the solar-terrestrial space environment, providing support for space weather research and real-time forecasting [4][5]. - The project consists of a comprehensive monitoring network with 31 stations and 282 monitoring devices, making it the most extensive and capable ground-based monitoring network internationally [5]. Group 2: Technological Innovations - The project has developed a unique monitoring architecture characterized by a complete observation chain from the sun's surface to the Earth's surface, and a "three-network" layout for electromagnetic, middle and upper atmosphere, and ionosphere monitoring [2][3]. - Innovations include the use of a large aperture laser radar system to monitor the upper atmosphere, which was optimized through team collaboration and experimentation [3]. Group 3: Future Plans - The project will continue to implement the International Ziwuyuan Grand Science Plan, aiming to establish a comprehensive monitoring chain from 120°E to 60°W, facilitating all-weather observations of the solar-terrestrial environment [6]. - The goal is to enhance global responses to space weather disasters and promote peaceful utilization of outer space [6].

Core Insights - The Meridian Project Phase II, a significant national scientific infrastructure for space environment monitoring, has officially entered operation after passing national acceptance in March 2023, achieving multiple original results since then [1][2] Group 1: Project Overview - The Meridian Project consists of 96 monitoring stations and 282 monitoring devices, providing real-time data from space [1] - The project aims to study irregular structures in the ionosphere, which significantly impact radio communication and satellite navigation systems [1][2] Group 2: Scientific Contributions - The project has made important advancements in understanding mesoscale ionospheric disturbances and polar flow evolution in the auroral region [1] - Research on ionospheric irregular structures is crucial for improving the accuracy of the BeiDou navigation system and other communication systems [2] Group 3: International Collaboration - The International Meridian Circle Scientific Program was initiated to establish a comprehensive monitoring network across longitudes, aiming for global integration of multidisciplinary observations of the space environment [2] - The program is currently in the proposal verification stage, with expectations for completion soon, enhancing continuous observation capabilities between the Eastern and Western Hemispheres [2]