Abstract:

The biggest difficulty in maneuvering target tracking is that the dynamic model of targets can not be found accurately, which means in most situations the dynamic models are unmatched. Interacting multiplemodel (IMM) is the most popular algorithm for maneuvering target tracking nowadays. The paper analyzes the shortcomings of the current typical IMM algorithm for tracking maneuvering targets, and then puts forward a modified IMM algorithm which has a better performance for tracking maneuvering targets. Based on the analysis of innovation expectation, this modified IMM algorithm calculates the model probability in a revised way, which improves the precision for tracking maneuvering targets obviously. Based on a typical simulation scenario for tracking maneuvering targets, the tracking precisions of the modified IMM and current typical IMM are compared, and accuracies of model probabilities calculations for both algorithms are also studied. The simulation results validate the modified IMM algorithm.