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本文在考虑大气密度(90km高度以下) 随地理纬度、高度及时间(月份)随机变化的基础上,沿卫星的返回轨道建立了随机大气密度的统计模型。并应用该模型产生的随机大气密度样本,进行返回轨道的Monte Corlo法模拟计算。通过对模拟计算得到的返回轨道参数样本的统计处理,本文分析了大气密度变化对卫星返回轨道参数的影响。另外,本文还介绍了近似估计大气密度变化对返回轨道参数影响的影响系数法。
In this paper, a statistical model of random atmospheric density along the return orbit of a satellite is established, taking into account the stochastic change of atmospheric density (below 90 km) with the latitude, altitude and time of month (month). Monte Carlo simulation of the return orbit was carried out using random atmospheric density samples generated by this model. Through the statistical processing of the returned orbit parameter samples calculated by simulation, this paper analyzes the influence of atmospheric density changes on the orbit parameters of the satellite. In addition, this article also introduces the influence coefficient method of estimating the influence of atmospheric density variation on the return orbit parameters.