Global ionosphere residual error modeling method, device and system

The embodiment of the invention discloses a global ionosphere residual error modeling method, device and system, and the method comprises the steps: constructing ionosphere residual errors into x and y directions in a user navigation system, and based on the time characteristics of the ionosphere residual errors, constructing a first-order Markov process for describing the time residual error characteristics, namely time ionosphere residual errors; based on the spatial characteristic of the ionosphere residual error, analyzing to obtain the spatial residual error characteristic of the ionosphere residual error at the puncture point, namely the spatial ionosphere residual error; and finally, combining the time residual error characteristic and the space residual error characteristic, and carrying out accurate modeling on the time-space characteristic of the global ionosphere residual error. According to the technical scheme provided by the invention, the problem that the residual error still exists after corre