Three-dimensional tracking method for hypersonic aircraft

The invention discloses a three-dimensional tracking method for a hypersonic aircraft, which is applied to the field of trajectory tracking of aircrafts. The method comprises the following specific steps of establishing a motion equation of the hypersonic aircraft in a gliding stage under a half-speed coordinate system; dividing a maneuvering trajectory of the hypersonic aircraft into a longitudinal trajectory and a transverse trajectory, modeling acceleration on the longitudinal trajectory into an attenuated oscillation model for tracking, and tracking on the transverse trajectory by adopting an interactive multi-model consisting of a Singer model and a uniform acceleration model; acquiring measurement information of a radar in a spherical coordinate system, and converting the measurement information into a Cartesian coordinate system by utilizing unbiased measurement conversion; and finally, designing an adaptive Kalman filtering method with multiple fading factors on the basis of an existing Kalman filteri