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一个称为“内卫星”的验证质量块位于外卫星的内部空腔中,不与外卫星接触而自由飞行,由于外卫星的屏蔽,其不受大气阻力、太阳光压等干扰作用,沿着纯引力轨道飞行。外卫星会对内卫星产生万有引力作用,是内卫星纯引力轨道的主要残余干扰。根据卫星相对运动动力学方程,建立了万有引力干扰对内卫星纯引力轨道影响的分析模型;基于将外卫星绕轨道面法向旋转以调制万有引力的策略,建立了外卫星自旋对万有引力干扰影响的抑制模型。以内编队纯引力飞行系统为例,对比计算了外卫星有无自旋时万有引力干扰对内卫星纯引力轨道的影响。基于模型的分析表明,外卫星自旋能够显著抑制万有引力干扰对内卫星纯引力轨道的长期影响;实例计算表明,万有引力干扰的天长期影响能够降低5～7个数量级。
A proof mass, called the “inner satellite”, is located in the internal cavity of the outer satellite and is free to fly without contact with the outer satellite. Due to the shielding of the outer satellite, it is immune to the interference of atmospheric resistance and solar pressure, Fly along pure gravitation orbit. The external satellite will have a gravitational effect on the internal satellite, which is the main residual interference of the pure gravitational orbit within the satellite. Based on the relative kinetic equation of satellite, the analytical model of the influence of gravitational interference on the pure gravitational orbit of the inner satellite is established. Based on the strategy of rotating the outer satellite orbit normal to the orbit to modulate the gravitational attraction, the influence of the external satellite spin on the gravitational interference Suppression model. Taking the internal formation pure gravitational flight system as an example, the influence of gravitational interference on the pure gravitational orbit of the inner satellite when the external satellite is spinning is compared. Model-based analysis shows that the exoskeleton spins can significantly suppress the long-term effects of gravitational interference on the pure gravitropic orbit of an internal satellite; and examples show that the long-term effects of gravitational disturbances can be reduced by 5 to 7 orders of magnitude.