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在分析火星-太阳同步回归轨道数学模型的基础上,设计了回归周期的近似重访周期算法.基于对回归要素取整处理,结合回归轨道重访特征函数,通过对重访间隔子间距数的判断,可以得到最优近似重访周期和次优近似重访周期,近似重访周期的设计能以更高的时间分辨率实现对地覆盖.进一步分析了最优回归周期族与火星赤道表面覆盖率的关系,并计算了其对应的轨道参数.为火星探测初期的轨道设计提供了借鉴.
Based on the analysis of the mathematical model of Mars-Sun synchrotron orbit, an approximate revisit cycle algorithm for regression period is designed. Based on the rounding of regression elements and the revisit of eigenfunctions by regression orbit, We can get the optimal approximate revisit cycle and the suboptimal revisit cycle, and the design of approximate revisit cycle can achieve the coverage with higher time resolution.Further analysis of the optimal regression periodic family and Mars equatorial surface coverage Rate, and calculated the corresponding orbital parameters, which provided reference for the orbit design of the early Mars exploration.