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针对椭圆参考轨道附近的交会问题,给出了数值梯度寻优算法和遗传寻优算法用于确定最优转移时间和最优双脉冲,并解决了双脉冲半圈交会和整圈交会的奇异问题。在此基础上,考虑地球J2带谐项对相对运动的影响,给出了采用线性梯度的迭代算法,并将其用于摄动下的燃料最优双脉冲交会制导。采用不同偏心率的参考轨道进行了交会仿真,结果表明该迭代交会制导算法简单可行,适用于圆参考轨道和任意偏心率的椭圆参考轨道附近的远距离交会。
Aiming at the intersection problem near the elliptical reference track, a numerical gradient optimization algorithm and a genetic algorithm are proposed to determine the optimal transfer time and the optimal double-pulse, and solve the singularity problem of half-circle half-circle intersection and full-circle intersection . On this basis, considering the influence of the earth’s J2 harmonic on the relative motion, an iterative algorithm using a linear gradient is given and applied to the fuel optimal double pulse crossfire guidance under perturbation. Intersection simulation with reference trajectories with different eccentricities shows that the iterative intersection guidance algorithm is simple and feasible and suitable for long-range rendezvous near elliptical reference orbit with arbitrary reference eccentricity.