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针对基于星间相对测量的相对导航算法中由测量方程将相对轨道拟平根数转化为相对位置过程导致的模型非线性,提出一种基于约化相对轨道拟平根数的卫星编队导航方法.该方法通过编队卫星之间一段时间的切向漂移估计半长轴偏差,合理处理半长轴偏差对双星相对动力学的影响,克服了模型线性化造成的误差,能够实现长期稳定的高精度卫星编队导航.
Aiming at the non-linearity of the model which is caused by the conversion of relative orbit quasi-flat root number to the relative position by the measurement equation in the relative navigation algorithm based on relative measurement of stars, a satellite formation navigation method based on reduced relative orbit quasi-flat root number is proposed. The semi-major axis deviation is estimated by the tangential drift of formation satellites for a period of time, the influence of semi-major axis deviation on the relative dynamics of binary stars is reasonably dealt with, the error caused by the model linearization is overcome, and the long-term and stable high-precision satellite formation navigation can be achieved .