高精度重力场下回归轨道半解析优化设计
发布时间：2019-05-16 17:57
【摘要】：为解决太阳同步回归轨道的标称设计问题,提出一种基于高精度重力场的半解析优化方法。建立地球非球形引力摄动阶数为J_(15)的高精度重力场解析模型,并分离出引力摄动的长期项和长周期项。构建回归轨道从半长轴到平交点周期的对应关系,平交点周期变化随引力摄动阶数的提高而逐渐收敛。通过微分修正迭代算法所确定的半长轴相对于传统J_2摄动模型的半长轴确定值具有更高的精度和更好的稳定性。考察摄动短周期项影响下的密切交点周期,结果表明其受初始位置(平近点角)影响较大,变化范围为0.015 s,并由此给出精确回归轨道优化设计的基准:不同的初始位置上满足星下点轨迹严格回归的半长轴期望值。
[Abstract]:In order to solve the nominal design problem of solar synchronous regression orbit, a semi-analytical optimization method based on high precision gravity field is proposed. A high precision analytical model of gravity field with non-spherical gravitational perturbation order J15 is established, and the long-term and long-period term of gravitational perturbation are separated. The corresponding relationship between the period of regression orbit from half long axis to flat intersection point is constructed, and the periodic variation of flat intersection point converges gradually with the increase of gravitational perturbation order. The semi-long axis determined by differential correction iterative algorithm has higher accuracy and better stability than that of the traditional J 鈮，
本文编号：2478461
[Abstract]:In order to solve the nominal design problem of solar synchronous regression orbit, a semi-analytical optimization method based on high precision gravity field is proposed. A high precision analytical model of gravity field with non-spherical gravitational perturbation order J15 is established, and the long-term and long-period term of gravitational perturbation are separated. The corresponding relationship between the period of regression orbit from half long axis to flat intersection point is constructed, and the periodic variation of flat intersection point converges gradually with the increase of gravitational perturbation order. The semi-long axis determined by differential correction iterative algorithm has higher accuracy and better stability than that of the traditional J 鈮，
本文编号：2478461
本文链接：https://www.wllwen.com/kejilunwen/hangkongsky/2478461.html
