自适应退步搜索（A search strategy that automatically halves the velocity correction and backtracks when differential correction iteration enters an erroneous region (integration reaches the fixed time limit without satisfying the flight path angle constraint). In the strongly nonlinear phase space around Halo orbits, standard differential correction tends to diverge or converge to large-impulse trajectories. Backstepping search progressively reduces the correction step size until the iteration escapes the erroneous region and finds a solution satisfying the termination condition, improving convergence robustness.）

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定义

当微分修正迭代陷入错误区域（积分到达固定时间但航迹角不满足约束）时，自动将速度增量修正量减半并回退的搜索策略。在Halo轨道周围的强非线性相空间中，标准微分修正容易发散或收敛到大速度增量的轨道上。退步搜索通过逐步缩小修正步长，使迭代跳出错误区域后重新找到满足终止条件的解，从而提高算法的收敛鲁棒性。

该概念在地月空间研究和任务设计中具有重要应用价值，涉及轨道设计、导航控制或任务规划等多个方面。