Abstract

The BeiDou-3 global satellite navigation system has completed its global constellation, and standalone BeiDou timing devices have completely eliminated reliance on foreign technology. GPS As a navigation‑source‑dependent solution, it boasts multiple core advantages—autonomy and controllability, anti‑interference capability, and signal security—in critical information infrastructure sectors such as finance, electric power, rail transit, and Party‑and‑government classified systems. This paper, in conjunction with Zhongxin Chuang… DNTS-9-B Technical specifications of the single‑Beidou server and industry‑specific implementation guidelines; an analysis of the core value of single‑Beidou time synchronization in ensuring temporal‑synchronization security across critical sectors; a comparative assessment with dual‑mode Beidou. +GPS Addressing equipment security vulnerabilities, we are developing a standardized deployment and protection plan for the BeiDou system.

I. Core Technical Advantages of the BeiDou-3 Timing System

1. Fully autonomous, domestically developed signal system: BeiDou-3 B1I/B1C The frequency band is entirely developed in-house, and the signal encryption scheme is subject to domestic oversight, making it impossible for foreign entities to tamper with the signal standards.

2. Multi‑layer anti‑interference design: The satellite broadcasts anti‑spoofing verification codes, enabling the receiver to detect forged satellite messages and ensuring compatibility with the complex electromagnetic environments found in substations and industrial facilities.

3. Global coverage with stable time synchronization: With a sufficient number of regional satellites within China, satellite acquisition and tracking remain more reliable in urban environments and indoor settings with weak signals compared to overseas navigation systems.

4. Official precise timing parameters: native output of BeiDou-3 UTC Standard time, with time‑transfer traceability to the National Time Service Center, complies with all domestic industry standards.

II. Dual-Mode Beidou +GPS Security vulnerabilities of the device

1. Risks of Accessing Overseas Signals: GPS The receiver chip and firmware originate from overseas, posing security risks such as backdoors and signal hijacking; consequently, the project involving classified information and critical infrastructure has failed to pass acceptance testing.

2. Multi-source switching timing jitter: automatic device switching GPS/ When the BeiDou system is initialized, the reference time experiences minute jumps, which can easily trigger malfunctions in high-frequency trading and relay protection applications.

3. Unprotected satellite signals from overseas: GPS The signal lacks domestic cryptographic authentication, making it vulnerable to forgery and interference by overseas devices, and it lacks official anti-spoofing protection mechanisms.

III. The Security Value of Standalone Beidou Timing Equipment in Critical Industries

1. Party and government units handling classified information: Completely eliminate the risk of temporal leakage from foreign navigation sources, thereby meeting the stringent requirements for independent and controllable operation of classified information systems.

2. Financial Core Transactions: Avoidance GPS Signal spoofing and manipulation of transaction timing ensure transaction fairness and enable regulatory compliance and traceability.

3. Smart Power Grid: Compliant with DL/T1100.5 Interference‑resistance standards ensure stable output of reference time in the complex electromagnetic environment of substations, thereby preventing false operations of relay protection.

4. Rail Transit Dispatch: Preventing Foreign-Sourced Signal Interference with Train Operations ATS System timing ensures the safe operation of train dispatching.

5. Information Technology Innovation (ITI) Transformation Project: Fully compatible with domestically produced Beidou‑based hardware and compliant with ITI‑driven domesticization acceptance standards, with no foreign‑made components.

IV. China–Singapore Innovation DNTS-9-B Core Technology Assurance for Single-BDS Equipment

1. Pure BeiDou‑only receiver: It captures only the BeiDou‑3 frequency bands and is hardware‑level shielded. GPS 、 GLONASS Signal reception channel unable to acquire foreign navigation signals;

2. In-house developed Beidou signal validation algorithm: it parses satellite‑encrypted verification codes in real time, blocks spoofed Beidou signals, and logs alerts locally.

3. Domestically produced end-to-end hardware: antennas, feeders, receiver chips, and server processors are all domestically manufactured, with the original manufacturer providing a complete bill of materials.

4. Supporting security hardware: can be paired with DNSIS Generative satellite security isolation device, providing dual-layer protection against external RF interference and spoofed signals.

V. Standardized and Secure Deployment Architecture for a Standalone Beidou Timing System

1. Satellite Reception Layer: Dedicated BeiDou‑Only Antenna +DNSIS Security isolation device that physically blocks malicious RF signals from the external environment.

2. Reference Clock Layer: Primary/Standby DNTS-9-B Single‑Beidou server, with no capability to receive foreign satellites;

3. Intranet synchronization layer: Encrypted NTP/PTP The protocol is distributed to business terminals on the internal network at a standard time.

4. Calibration and Inspection Layer: DNHH-9-B The standalone Beidou handheld timing device is used for acceptance testing and annual accuracy verification.

5. Audit Monitoring Layer: The network-wide unified time‑synchronization monitoring platform centrally collects time‑series and signal‑anomaly alert data.

VI. Legal Basis for Industry-Specific Implementation Policies

1. The Regulations on the Security Protection of Critical Information Infrastructure require the prioritized adoption of domestically produced, independently controllable time and frequency infrastructure.

2. Electricity DL/T1100.5 The standard recommends BeiDou as the primary time‑source, while high‑security scenarios adopt a pure single‑BeiDou architecture.

3. The nationalization acceptance standards for financial IT innovation and Party-and-government confidentiality projects explicitly prohibit using… GPS As the primary time source.

Conclusion

The BeiDou‑3 single‑BeiDou timing architecture achieves autonomous and controllable time‑keeping at the signal source, addressing the security vulnerability of dual‑mode devices relying on foreign navigation sources. It serves as a standardized solution for ensuring time‑synchronization security in critical infrastructure across sectors such as finance, power, transportation, and classified‑information‑related entities. DNTS-9-B The standalone Beidou server fully complies with the deployment specifications for standalone Beidou systems across all industries.