时间频率学报

星载氢原子钟是现代导航卫星的核心支撑，为了保障国家安全、提高自身竞争力，采用国产器件研制了模拟锁相接收机。分析了锁相接收机的总体设计结构、锁相环路的设计原理、等效噪声模型建立，同时仿真了不同环路参数对于氢原子钟短期频率稳定度的影响，并进行了实验验证，为今后调试提供了理论指导。最终实测结果表明，在采用国产器件的前提下，锁相接收机可实现1.35×10^-13/1 s、3.22×10^-14/10 s,验证了该电路方案的可行性。

The spaceborne hydrogen maser atomic clock is the core support of modern navigation satellites.To ensure national security and enhance competitiveness, a simulated phase-locked receiver was developed using domestically produced components.The overall design structure of the phase-locked receiver, the design principles of the phase-locked loop, and the establishment of an equivalent noise model were analyzed.Simulations were conducted to evaluate the impact of different loop parameters on the short-term frequency stability of the hydrogen maser, followed by experimental validation, providing theoretical guidance for future debugging.The final test results demonstrate that, under the condition of using domestic components, the phase-locked receiver can achieve 1.35×10^-13/1 s and 3.22×10^-14/10 s, verifying the feasibility of this circuit design, ensuring both reliability and stability.