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Method and apparatus for initial orbit determination using high-precision orbit propagation and maneuver modeling

机译:使用高精度轨道传播和机动建模确定初始轨道的方法和装置

摘要

A method of determining an orbit of an orbital object includes computing predicted tracking measurement values based on the orbit computed from the initial conditions factoring in any modeled environmental forces and realistic maneuvers; computing the differences between the actual and predicted tracking measurements; determining an improved estimate of the initial conditions that reduces the measurement errors using a minimization or root finding algorithm; after the algorithm has converged, reviewing the hypothetical maneuvers in the force model, taking each value and determining which values came up as near-zero in the minimized solutions and which values came up as those of measurable thrust; determining overall burn duration using the first and last burn times; determining the thrust profile of the orbital object over the observation period using the integrated thrust values; and determining the actual maneuver based on the observation data.
机译:一种确定轨道物体的轨道的方法包括:基于从初始条件计算出的轨道计算预测的跟踪测量值,其中,初始条件考虑了任何建模的环境力和实际机动。计算实际和预测跟踪测量之间的差异;使用最小化或求根算法确定初始条件的改进估计,以减少测量误差;算法收敛后,回顾力模型中的假设操作,获取每个值并确定最小化解中哪些值接近零,哪些值可测量推力;使用第一次和最后一次燃烧时间确定总体燃烧持续时间;使用积分推力值确定在观察期内轨道物体的推力曲线;并根据观测数据确定实际机动。

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