Application of multi-sensor information fusion technology in the strap-down inertial navigation expert system

The design method was discussed for merging multi-sensor information in the strap-down inertial navigation expert system. The hardware components of the system as well as the work modes of the sensors were analyzed, and an information fusion algorithm based on the space-time coordinate transformation was proposed. The algorithm achieved the match of time and space to obtain a better multi-sensor data fusion effect. Simulation results show that the accuracy can reach under 0.3° by the filtering of multi-sensor information fusion. So it can enhance the assessment precision of the whole expert system.