A two-dimensional coarse tracking demonstration system is designed to verify the tracking performance of maneuvering target,namely the beacon on the lake surface.First,double-DSP and two-axis rotary platform are adopted to construct the hardware platform for coarse tracking.Then,the grayscale histogram is used to segment beacon from complex lake surface background.The predictive self-correcting control algorithm is applied to design the system controller which has better robustness.Finally,two-dimensional tracking experiments are conducted.The experimental results demonstrate that the tracking accuracy is not related to the distance.This system has higher tracking accuracy and can satisfy the requirements for space optical communication.