【摘要】：為解決太陽同步回歸軌道的標稱設計問題,提出一種基于高精度重力場的半解析優(yōu)化方法。建立地球非球形引力攝動階數(shù)為J_(15)的高精度重力場解析模型,并分離出引力攝動的長期項和長周期項。構建回歸軌道從半長軸到平交點周期的對應關系,平交點周期變化隨引力攝動階數(shù)的提高而逐漸收斂。通過微分修正迭代算法所確定的半長軸相對于傳統(tǒng)J_2攝動模型的半長軸確定值具有更高的精度和更好的穩(wěn)定性。考察攝動短周期項影響下的密切交點周期,結果表明其受初始位置(平近點角)影響較大,變化范圍為0.015 s,并由此給出精確回歸軌道優(yōu)化設計的基準:不同的初始位置上滿足星下點軌跡嚴格回歸的半長軸期望值。
[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，

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