论文部分内容阅读
针对太阳同步回归轨道的重访问题,提出了探究重访特性的系统方法。该方法以Q值建立太阳同步与回归轨道间的联系;采用基本交点距的描述方法,将回归周期内轨道的访问顺序加以量化;应用数论中的贝祖定理,将重访周期的确定转换为求解一丢番图代数方程。仿真算例选以光学载荷对地观测为前提,得到了特定回归周期轨道的访问顺序及地面覆盖情况,确定了相应的重访特性;此外,以轨道高度范围为约束,以快速重访为目标,确定了太阳同步回归轨道的设计方法。结果表明,该方法可以确定具有良好重访特性的最优解。
Aiming at the problem of revisiting the sun synchronous orbit, a systematic method to explore the characteristics of revisit is proposed. This method establishes the relationship between solar synchronization and regression orbit by using Q value. By using the method of describing the basic intersection point, the order of the orbits in the regression period is quantified. By using Bezou’s theorem in number theory, the revisit period is converted into Solving a Diophantus algebraic equation. The simulation example is based on the optical load on the premise of earth observation, access to specific return cycle orbit sequence and ground cover conditions, to determine the corresponding revisit characteristics; In addition, the track height range as a constraint to fast revisit as the goal , To determine the sun synchronous regression orbit design method. The results show that this method can determine the optimal solution with good revisit characteristics.