摘要
在防空情报处理、应用中,系统各单元必须采用统一的同步时间。北斗、GPS时间是以卫星信号为时钟源,具有精度高、稳定性好的优点,在需要进行时间同步的电子系统中被广泛应用为唯一的时间源,以实现系统各单元间的时间统一。以某型地空导弹系统中的时间同步设计为例,介绍了该系统的时间同步原理,论述了工程设计上的抗干扰措施,提出了一种秒脉冲时间轴开窗保护的设计方法,具有很好的设计参考价值。经实际应用证明,本设计稳定可靠,满足系统要求。
In the intelligence processing and application of air defense system,each unit in the system must adopt the unified time.Beidou time and GPS time are analyzed and calculated according to the clock sources-satellite signals,which have the advantages of high precision and good stability.Beidou time or GPS time is widely used as the only time source in electronic systems which adopt the synchronization time to realize time unifying between various units of the air defense system.In this paper,a design of time synchronization in a certain surface-to-air missile system is declared.The principle of time synchronization is introduced and the available methods for anti-interference processing in engineering design are described.A protection method for the signal PPS by opening/closing the window via time axis is given,which has good reference value for protecting signal PPS.The practical application proves that the design is stable and reliable and meets the system requirements.
作者
张继国
丁岐鹃
ZHANG Jiguo;DING Qijuan(The 38th Research Institute of China Electronics Technology Group Corporation,Hefei 230088,China;Key Laboratory of Aperture Array and Space Application,Hefei 230088,China)
出处
《雷达科学与技术》
北大核心
2018年第6期596-600,607,共6页
Radar Science and Technology
关键词
授时
对时
时间同步
抗干扰
时间窗
timing service
clock correction
time synchronization
anti-interference
window via time axis
