摘要
为实现包括地球和地球以外的时间统一,需要运用相对时间观的两种时间来替代目前时间计量体系中的标准时间,这两种时间分别是:原时和坐标时,其中坐标时可溯源到脉冲星时间基准上。为构建简单的本地轨道参数历表,阐明分层嵌套的空间包含关系,形成时间相对统一的观点。从计量角度,提出了一种脉冲星复现坐标时的理论,运用相对时间观中的时间和空间不可分割观点,归纳了统一时间的广域坐标系所必须具备的基本特征,强调了原点观者的特殊性,提出了基于原点观者的脉冲星脉冲序号和初始历元的定义方法。首先,把一组脉冲星的脉冲序号约定为坐标时基准,用来复现坐标时,约定一组脉冲星的脉冲周期为固定的常数数组,约定后不再测定,常数的单位仍是国际单位制[秒],常数可理解为脉冲序号的坐标时间隔与[秒]之间换算的系数。然后,基于平面电磁波模型,把脉冲星的脉冲电磁波经过原点的时刻与脉冲序号一一对应,于是原点观者的坐标时与连续的脉冲序号成为线性函数关系,最后,分析了脉冲星稳定特点,给出了以一组序号为变量的脉冲星集合稳定性判据。
To unify time on and out of the Earth,the viewpoint of relative time changes the time metrology standard from a unique standard time to two kinds of time:proper time and coordinate time,in which coordinate time can be traced to benchmark by pulsars.For the aim to build the ephemeris of orbit parameters simply locally,it is pointed out that the relationship of space inclusions is hierarchically nested,and the viewpoints of relative unification of time are formed.It deeply demonstrates the theory of coordinate time rebuilt by pulsars,summarizes the basic characteristics of a wide area coordinate system that unifies time must have,emphasizes the particularity of the original observer,and puts forward the definition method of pulsar′s sequence number and initial epoch based on the original observer,using the view that time and space are indivisible in the relative time view.First of all,to arrange a set of pulsar pulse signal as primary standard of the coordinate time,used to rebuild the coordinate time,convention a set of pulse period of pulsars for fixed constant array,no longer measuring after convention,the constant unit is still the international system of units[seconds],constant can be understood as the pulse number coordinate time interval and conversion coefficient between[seconds].Then,based on the plane electromagnetic wave model,corresponding to the time when the pulse electromagnetic wave of the pulsar passes through the origin and the pulse sequence number one by one,so the coordinate time of original observer the origin of the viewer coordinates and continuous pulse number become linear function relationship.Finally,analyzes the pulsar stability characteristics,and given pulsar set stability criterion by the arguments of a set of sequence number.
作者
刘民
童明雷
平劲松
刘文彪
方海燕
周庆勇
帅平
何克亮
Liu Min;Tong Minglei;Ping Jinsong;Liu Wenbiao;Fang Haiyan;Zhou Qingyong;Shuai Ping;He Keliang(Beijing Orient Institute of Metrology and Test,Beijing 100094,China;National Time Service Center,Chinese Academy of Sciences,Xi′an 710600,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Department of Physics,Beijing Normal University,Beijing 100875,China;School of Aerospace Science and Technology,Xidian University,Xi′an 710126,China;Xi′an Institute of surveying and Mapping,Xi′an 710054,China;Qian-Xueshen Space Technology Lab,Beijing 100190,China;Xi′an Branch,China Academy of Space Technology,Xi′an 710100,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2024年第2期184-192,共9页
Chinese Journal of Scientific Instrument
关键词
脉冲星
原时
坐标时
脉冲序号
空间守时系统
空间计量
pulsar
proper time
coordinate time
pulse sequence number
space timekeeping system
space metrology