CAJ | 학술논문

地月平动点中继应用轨道对于月球背面探测具有十分重要的应用价值,由于地月平动点的不稳定性,必须进行轨道维持。文章研究了真实力模型下月球平动点中继应用轨道的维持。首先,基于限制性三体问题下平动点轨道的运动特性,研究了平动点轨道维持的数学模型与维持策略,提出了平动点轨道维持的连续环绕控制方法,并给出了轨道维持的 Halo 和 Lissajous 两种控制方式；其次,充分考虑各天体和光压摄动下,采用数值手段研究了不同幅值的地月平动点周期中继应用轨道的维持间隔与速度增量等。研究结果表明：Lissajous 控制方式适用于月球平动点中继应用轨道的维持,在给定测控精度条件下,维持间隔约7.4 d,速度增量优于20 m/s/a。该方法已经成功应用于我国“嫦娥2号”日地平动点任务和“嫦娥5T1”地月平动点任务并获得了良好的控制效果,还可直接应用于我国未来“嫦娥4号”等月球背面探测任务。
지월평동점중계응용궤도대우월구배면탐측구유십분중요적응용개치,유우지월평동점적불은정성,필수진행궤도유지。문장연구료진실력모형하월구평동점중계응용궤도적유지。수선,기우한제성삼체문제하평동점궤도적운동특성,연구료평동점궤도유지적수학모형여유지책략,제출료평동점궤도유지적련속배요공제방법,병급출료궤도유지적 Halo 화 Lissajous 량충공제방식；기차,충분고필각천체화광압섭동하,채용수치수단연구료불동폭치적지월평동점주기중계응용궤도적유지간격여속도증량등。연구결과표명：Lissajous 공제방식괄용우월구평동점중계응용궤도적유지,재급정측공정도조건하,유지간격약7.4 d,속도증량우우20 m/s/a。해방법이경성공응용우아국“항아2호”일지평동점임무화“항아5T1”지월평동점임무병획득료량호적공제효과,환가직접응용우아국미래“항아4호”등월구배면탐측임무。
Relay orbits about the Earth-Moon collinear libration point shave significant valueon the exploration of the lunar farside,but have complex kinetic characteristics in the nature,thus the orbit maintenance has always been focused in the deep space navigation and control field.This paper explores orbit maintenance technology of the relay orbit about the collinear Earth-Moon libration points under the real dynamical conditions.First,based on the restricted three-body problem,the mathematic model of relay orbit station-keeping with the real dynamical model is analyzed.The continue-circling method is presented for the relay orbit maintenance with the two control styles, i.e.,the Halo style and the Lissajous style.Second,with the third-body gravitation and the solar radiation pressure perturbations considered,the method is tested and analyzed by using the numerical simulations to achieve the control frequency and the corresponding velocity increment required by the relay orbits with different amplitudes. According to the simulations,the Lissajous style is suitable to the orbit maintenance with a control interval of 7.4 days and a velocity increment less than 20 m/s/a.Furthermore,the method has been successfully applied in Chang’e-2 and Chang’e-5T1 extended missions and can provide a beneficial reference for the future Chang’e-4 mission.