CAJ | 학술논문

针对预测－校正制导方法计算量大的问题，提出一种结合预测－校正法和标准轨道法的组合制导方法。在一次再入段采用预测－校正法提高制导方法的鲁棒性能，在二次再入段采用标准轨道法减少计算量。该组合制导方法通过利用标准轨道信息，减少了预测时间；通过设计指令快速迭代算法，减少了迭代次数；并根据飞船二次再入点处的实际状态，修正标准指令剖面，提高二次再入制导性能。仿真结果表明：该组合制导方法能大幅减少预测时间，提高校正速度，并具有较高的鲁棒性和精度。
침대예측－교정제도방법계산량대적문제，제출일충결합예측－교정법화표준궤도법적조합제도방법。재일차재입단채용예측－교정법제고제도방법적로봉성능，재이차재입단채용표준궤도법감소계산량。해조합제도방법통과이용표준궤도신식，감소료예측시간；통과설계지령쾌속질대산법，감소료질대차수；병근거비선이차재입점처적실제상태，수정표준지령부면，제고이차재입제도성능。방진결과표명：해조합제도방법능대폭감소예측시간，제고교정속도，병구유교고적로봉성화정도。
A new entry guidance method combined predictor-corrector guidance and reference trajectory guidance was proposed for reducing calculated amount in predictor-corrector entry guidance.Predictor-corrector guidance was applied in initial entry phase to improve robustness,and reference trajectory guidance was applied in second entry phase to reduce calculated amount.Through the information of reference trajectory,it was less time consumed in predicting.The method with a new command fast iterative algorithm was designed to reduce the iterative times.The reference command profile was revised according to actual condition of lunar capsule in transfer position so as to compensate error and to improve the quality of the second entry guidance performance.Numerical simulation results demonstrate that the combined entry guidance method is able to lessen time in predicting and fasten correction,and it has the characteristics of high precision and robustness.