Formation flight relative motion prediction method based on prediction correlation coefficient fitting

The invention discloses a formation flight relative motion prediction method based on prediction correlation coefficient fitting, and the method comprises the steps: obtaining relative navigation motion state data, carrying out the fitting calculation of a prediction correlation coefficient, and carrying out the prediction of the relative distance of a spacecraft in a free motion state through the prediction correlation coefficient. According to the method, the form is simple, the calculation precision of relative motion prediction is improved, engineering implementation is facilitated, and technical reserve is provided for obtaining guidance related parameters of a spacecraft in a near-circular orbit formation scene. 一种基于预测相关系数拟合的编队飞行相对运动预测方法，通过获得相对导航运动状态数据，拟合计算出预测相关系数，并利用预测相关系数对航天器自由运动状态下的相对距离进行预测。本发明方法形式简单，提高了相对运动预测的计算精度，且便于工程实现，为航天器在近圆轨道编队场景下的制导相关参数获取提供了技术储备。