【摘要】 大系统中各个独立子功能模块之间有时需要精确系统时间同步来协作完成系统功能,为此,提出了一种基于半无调制数据伪随机码的高精度系统时间同步方法,并借助非等量采样技术,使得独立分散功能模块之间的时间分辨率在理论上达到了15.3ps.仿真实验结果显示:在-20dB信噪比环境下,系统时间同步精度(标准偏差)达到0.066ns;在0dB信噪比环境下,系统时间同步精度达到0.040ns.更多还原

【Abstract】 Sometimes the high-accuracy system time synchronization is needed among the individual subfunction modules of a large system to accomplish system function closely.Thus,a novel high-accuracy system time synchronization method based on dataless pseudo-random code is proposed.And,by use of the non-equal sampling technique,the time resolution abstractly approaches 15.3 ps among the discrete subfunction modules.The simulation experiment results show that under -20 dB SNR(signal noise ratio) environment,the system time synchronization accuracy(standard deviation) approaches 0.066 ns whereas under the 0 dB SNR environment,it approaches 0.040 ns.更多还原