Abstract:Aiming at the problem of expensive components and complex modeling of inertial navigation, and the slow information transmission speed of GNSS/INS integrated navigation, a strapdown inertial navigation signal inversion technology based on information layer is proposed. After summarizing the definition of commonly used coordinate system in inertial navigation, the related statistics is calculated by attitide matrix, based on the euler angles with original target. Then focuses on how to invert its specific force and angular velocity according to the known position, velocity and attitude matrix. Finally, the measurement value of inertial navigation device under the simulation condition is obtained by superposition error. The simulation results show that, the specific force and angular velocity retrieved from a motion track are the measured values of the inertial navigation devices, which are output in the format of information frame, and then verified by the INS equation. The result error is in accordance with the allowable range of the inertial navigation system error.