摘要
介绍了脉冲星导航的研究进展,顾及天体的四极矩和角动量,推导了脉冲星导航的2PN观测方程,对导航观测方程中的2PN相对论效应进行数值分析。结果表明:在脉冲星导航中,太阳系天体的四极矩和角动量导致的时间延迟在10-13s量级;太阳对信号传播的引力弯曲不足1 ns,太阳系行星对信号的引力弯曲以木星为最大,量级为10-18s。
Advance of theory and applications in the pulsar navigation are first briefly reviewed,then considering the angular momentum and quadruple moment of celestial bodies in solar system,the 2PN observation equation for pulsar navigation is derived,and the numerical simulations for 2PN relativistic effects are analyzed.Results show that the relativistic effects of angular momentum and quadruple moment of celestial bodies in solar system are about 10-13 s,the light ray bending due to the sun is less than1 ns,the light ray bending due to the Jupiter is 10-18 s,which is the largest among the solar system planets.
出处
《测绘学报》
EI
CSCD
北大核心
2014年第10期1025-1031,共7页
Acta Geodaetica et Cartographica Sinica
关键词
脉冲星导航
观测方程
相对论效应
pulsar navigation
observation equation
relativistic effects
