摘要
在人造地球卫星精密定轨中,有摄星历等量的计算常采用Adams-Cowell方法,美国Texas大学空间研究中心(CSR)的定轨软件中则采用了一种有别于Adams-Cowell方法的KSG积分器。本文对这两种线性多步法作了全面比较,并用典型算例作了数值验证,列出了两种方法中卫星轨道沿迹误差的状况,以此表明为什么人们常采用Adams-Cowell方法。
Two kinds of linear multistep integration techniques, Adams-Cowell method and KSG integrator, were comprehensively compared in this paper. The former is generallyintroduced for the calculation of the ephemeris of a perturbed celestial body in the precision orbit determination, and the latter is included in an orbit determination software pack manufactured by the Center for Space Research at the University of Texas in Austin. A numerical test was also tried on, and the along - track errors caused by the two methods were given in solving two representative examples. The results show that the Adams-Cowell method is more efficient.
