I. Project Name

Clock Synchronization System Construction Project of China Space-Time Information Group Co., Ltd.

II. Duration of Cooperation

2026 First quarter of the year

• Company Overview

China Space-Time Information Group Co., Ltd. is the sole operator and service provider of China’s BeiDou Navigation Satellite System, established in… 2024 year 4 The company, registered in the Xiong’an New Area of Hebei Province, primarily engages in core businesses such as satellite navigation and communications, big data services, artificial intelligence development, and geospatial remote sensing information. The company has established… “ Spacetime Stellar Vein ” A carrier-grade operations service platform that generates spatiotemporal foundational data. “ A net ” , supporting the access of hundreds of millions of terminals and covering critical sectors such as security, transportation, emergency response, marine affairs, and meteorology. It has achieved remarkable results in the application of BeiDou high-precision positioning technology and the establishment of international cooperation alliances, and has been awarded… “ Yanzhao Role Model ” and numerous other honorary titles.

IV. Purchased Products

Beijing Zhongxinchuang Technology Co., Ltd. DNTS-9 Series NTP Server (including a version adapted for domestically developed IT infrastructure), along with a satellite timing antenna, redundant power modules, and centralized management software. This product leverages core all-digital phase-locked loop technology and supports the BeiDou system. / GPS Dual-mode time synchronization, with compatibility for domestically developed processor platforms, has been rigorously tested and certified by the National Time Service Center of the Chinese Academy of Sciences.

V. Customer Requirements

1. It is necessary to achieve precise time synchronization across multiple systems, including satellite navigation, big data processing, and geospatial remote sensing, thereby ensuring consistency in cross-platform data acquisition, transmission, and analysis.
2. Support GPS , Beidou, GLONASS 、 Galileo Multi-system satellite time synchronization meets the requirements for redundant backup of time sources in complex environments, ensuring continuous timing.
3. Time synchronization accuracy must meet the requirements of a local area network. 0.03-2ms Standard, internal synchronization accuracy 20ns , meeting the stringent reliability requirements for scientific research data;
4. It features autonomous timekeeping capability in the absence of satellite signals, equipped with a temperature-compensated crystal oscillator or a rubidium atomic clock, ensuring long-term stability of time‑keeping services.
5. Support IPv4/IPv6 Dual-stack support ensures compatibility with existing network architectures, enabling remote monitoring, configuration, and alarm management to meet the demands of large-scale network operations and maintenance.
6. The product must have a secure encryption mechanism and support RSA Asymmetric encryption, MD5/SHA Authentication and other features ensure the security of time-synchronized data transmission.

VI. Solution

In response to the business characteristics and technical requirements of China Space-Time Information Group, Beijing Zhongxin Chuang has provided a solution based on… DNTS-9 Type NTP An integrated time synchronization solution centered around the server:

1. Core equipment configuration: Selected DNTS-9 High-precision type NTP Server, equipped with 72 Channel-based timing type GNSS Receiver, supporting priority configuration for multiple satellite systems, with dual-receiver setup. + Dual-antenna redundancy design ensures a stable and reliable time source.
2. Timekeeping Assurance Scheme: Standard configuration includes a domestically produced aerospace-grade temperature-compensated crystal oscillator (with an optional rubidium atomic clock), combined with our proprietary all-digital phase-locked loop technology and frequency‑locking algorithm, achieving timekeeping accuracy better than… when satellite signals are unavailable. 8.6us/day (The rubidium clock version is superior to 500ns/day );
3. Network adaptation design: provides 1-12 One optional Gigabit Ethernet port, supporting independent physical isolation and load balancing; each port can handle per-second responses. 20000 This time, the request meets the demand for large-scale terminal access;
4. Management and Operations System: Deployment DNTS Manager Centralized management software that supports remote login, status monitoring, log analytics, and multi-level alerting; it can simultaneously manage thousands of servers and tens of thousands of clients, while providing a visual operations and maintenance interface.
5. Security protection mechanism: Enable certificate-based authentication, supporting AES 、 DES Encryption protocols ensure the security of management channels and time‑data transmission, preventing configuration tampering and information leakage.
6. Installation and Deployment Services: Providing 19 An inch‑standard rack‑mount installation solution, coupled with on‑site commissioning by a team of technical experts, ensures rapid integration of the equipment into the existing network and seamless compatibility.

VII. Implementation Outcomes

1. Time synchronization accuracy meets the standard: terminals of all business systems and… UTC The standard time synchronization error is controlled within 0.03-2ms Within this range, it meets the high‑precision timing requirements of scientific research tasks such as satellite navigation data processing and remote sensing information analysis.
2. Service Continuity Assurance: In complex electromagnetic environments or under satellite signal blockage, the device employs a built-in high‑stability crystal oscillator to maintain continuous timekeeping, ensuring the uninterrupted operation of core business systems.
3. Enhanced Operations and Maintenance Efficiency: The centralized management platform enables real-time monitoring of time synchronization status and remote operations, reducing on-site maintenance workload and lowering management costs.
4. Security and compliance: A full‑stack encryption mechanism and domestically developed core components ensure adherence to the information security and independent controllability requirements of research institutions.
5. Scalability Support: The system supports the deployment of secondary time servers and multi‑protocol expansion, enabling it to adapt to future increases in business scale and the evolving needs of diverse application scenarios.

VIII. Application Cases

Beijing Zhongxin Chuang DNTS Series NTP The server has successfully supported numerous research institutes and key projects, including: the China Academy of Launch Vehicle Technology, the Tianma Radio Telescope of the Chinese Academy of Sciences, the Shenzhou‑14 manned spacecraft, the Shanghai Academy of Spaceflight Technology, the China Electric Power Research Institute, the Institute of Physics of the Chinese Academy of Engineering, the Institute of Automation of the Chinese Academy of Sciences, the Institute of Oceanology of the Chinese Academy of Sciences, the Institute of High Energy Physics of the Chinese Academy of Sciences, the China Institute of Atomic Energy, the Nanjing Institute of Astronomical Optical Technology of the National Astronomical Observatories, the China Academy of Information and Communications Technology, the Lanzhou Branch of the Chinese Academy of Sciences, the Institute of Modern Physics of the Chinese Academy of Sciences, the China Railway Scientific Research Institute, the Instrument Research Institute of the Nanjing Astronomical Observatory of the Chinese Academy of Sciences, the Xichang Satellite Launch Center, and the 1st… of the China Electronics Technology Group Corporation. 54 Research Institute, the Tenth Research Institute of China Electronics Technology Group Corporation, the Eighth Research Institute of China Electronics Technology Group Corporation, the Fifteenth Research Institute of China Electronics Technology Group Corporation, the Thirty-Sixth Research Institute of CETC, the Xi’an Flight Automatic Control Research Institute of Aviation Industry Corporation of China, the Taiyuan Satellite Launch Center, the Beijing‑1 Satellite Ground Station, China Putian, Shanghai Lizheng Satellite Application Technology, the Shanghai Small Satellite Engineering Center, the Chongqing Transportation Science Research Institute of China Merchants Group, the Railway Research Institute, the Lanzhou Institute of Physics, the …th Research Institute of China Electronics Technology Group Corporation. 12 Research institutes, including the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences and the Institute of Information Science, among others.

The choice of numerous research institutions and leading enterprises reflects high recognition of Beijing Zhongxin Chuang’s product quality and professional services. Looking ahead, Beijing Zhongxin Chuang will continue to deepen its expertise in time‑synchronization technology, working in close collaboration with partners across all sectors to achieve win‑win outcomes that drive both corporate growth and societal progress.