Analysis method and equipment for observability evolution of radio navigation system and storage medium

The invention relates to a radio navigation system observability evolution analysis method and device and a storage medium. The radio navigation system observability evolution analysis method comprises the following steps: S1, determining error evolution of a spacecraft state quantity; s2, obtaining the influence of observation on an error covariance matrix based on the gain of the information amount brought by each observation; and S3, calculating to obtain an error estimation matrix for analyzing system observability. According to the method, the estimation error change caused by observation is continuous, the accumulation of observation information is considered, and the problem that the Fischer information matrix cannot reflect the difference of different orbiters when observability analysis is carried out on the single orbiter is effectively solved. 本发明涉及一种无线电导航系统可观性演化的分析方法、设备及存储介质，无线电导航系统可观性演化的分析方法包括：步骤S1、确定航天器状态量自身的误差演化；步骤S2、基于每次观测带来的信息量的增益，得到观测对误差协方差阵的影响；步骤S3、计算得到用于分析系统可观性的误差估计矩阵。本发明，通过将观测带来的估计误差变化的连续