The Dao zang 道藏 edition of Mozi in the Ming Dynasty was a significant step towards its rediscovery.Various editions were published later,showing different interpretations of the Mozi's content.Some editions trie...The Dao zang 道藏 edition of Mozi in the Ming Dynasty was a significant step towards its rediscovery.Various editions were published later,showing different interpretations of the Mozi's content.Some editions tried to discover Mozi's moral principles and his views on politics,economy and society.But other editions mostly aimed at making money by providing study materials for people.These early Mozi edtions testify to Mozi's early rediscovery,not only as a master,but also as an economic commodity.展开更多
对星地量子测距过程中利用捕获跟踪瞄准(Acquisition tracking and pointing,ATP)系统进行纠缠光子对收发和利用符合计数原理计算纠缠光子对到达时间差(Time difference of arrival,TDOA)的两个关键过程进行了仿真实验研究。根据"...对星地量子测距过程中利用捕获跟踪瞄准(Acquisition tracking and pointing,ATP)系统进行纠缠光子对收发和利用符合计数原理计算纠缠光子对到达时间差(Time difference of arrival,TDOA)的两个关键过程进行了仿真实验研究。根据"墨子号"量子卫星真实的6个轨道参数,对卫星的运动轨迹以及地面用户对从卫星上发射到地面信号的ATP过程进行系统仿真实验研究。分析并设计了ATP系统的结构;借助于Simulink环境下的仿真软件,建立ATP时域仿真系统,将所计算出的"墨子号"方位角与俯仰角位置信号作为ATP系统的输入信号,对所建立的ATP系统进行星地纠缠光收发的捕获跟踪瞄准过程进行了系统仿真实验,跟踪精度达到了2μrad;在实现地面用户对量子卫星的精确跟踪的基础上,设计并进行纠缠光子对收发及其符合计数的仿真实验;拟合出纠缠光子对皮秒级误差的到达时间差,实现了精确的量子测距过程,为量子导航系统的实现提供了一定的理论及仿真实验基础。展开更多
文摘The Dao zang 道藏 edition of Mozi in the Ming Dynasty was a significant step towards its rediscovery.Various editions were published later,showing different interpretations of the Mozi's content.Some editions tried to discover Mozi's moral principles and his views on politics,economy and society.But other editions mostly aimed at making money by providing study materials for people.These early Mozi edtions testify to Mozi's early rediscovery,not only as a master,but also as an economic commodity.
文摘对星地量子测距过程中利用捕获跟踪瞄准(Acquisition tracking and pointing,ATP)系统进行纠缠光子对收发和利用符合计数原理计算纠缠光子对到达时间差(Time difference of arrival,TDOA)的两个关键过程进行了仿真实验研究。根据"墨子号"量子卫星真实的6个轨道参数,对卫星的运动轨迹以及地面用户对从卫星上发射到地面信号的ATP过程进行系统仿真实验研究。分析并设计了ATP系统的结构;借助于Simulink环境下的仿真软件,建立ATP时域仿真系统,将所计算出的"墨子号"方位角与俯仰角位置信号作为ATP系统的输入信号,对所建立的ATP系统进行星地纠缠光收发的捕获跟踪瞄准过程进行了系统仿真实验,跟踪精度达到了2μrad;在实现地面用户对量子卫星的精确跟踪的基础上,设计并进行纠缠光子对收发及其符合计数的仿真实验;拟合出纠缠光子对皮秒级误差的到达时间差,实现了精确的量子测距过程,为量子导航系统的实现提供了一定的理论及仿真实验基础。
