Abstract

Strapdown inertial measurement unit (SIMU) installed in a vehicle determines the navigation accuracy of the vehicle. However, the stability of SIMU changes with the storage time passing by, which influences the navigation accuracy of the vehicle. Thus, it is very necessary to establish a predication model which can predict the stability of SIMU and evaluate the performance of SIMU. This paper proposes a method to predict the SIMU stability. This algorithm is based on support vector regression and particle swarm optimization. The results expressed that support vector regression and particle swarm optimization can forecast the changing trend of SIMU accurately, which can provide the theoretical basis for evaluating the SIMU’s performance.

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