Aiming at the problem that it’s difficult for following robots to locate

estimate and follow autonomously moving targets in free space with multiple obstacles

a multi-information fusion method for autonomous following of moving targets in free space in complex environment is proposed. The multi-signal redundant channel is set up between the moving target and the following robot

the information of multiple signal sources is observed through the diffusion channel switching

and the weight is reasonably designed for information fusion

the center position and the moving speed and direction of the moving target is calculated. As a result

a multi-signal source localization model is established and the following method is found when obstacle exists between the following robot and moving target. On this basis

a follow-up following positioning system is designed and tested. The results show that this method can quickly and accurately realize the follow-up of following robot in free space to the moving target.