Abstract:In the filed of space laser communication, the realization of laser communication by two communication devices needs to go though the process of coarse and fine aiming, and the process of coarse aiming needs to be assisted by tools such as optical telescopes and beacon laser in most scenarios, which is not easy to implement. Aiming at how to quickly and accurately identify laser communication devices?in the rough aiming process, and assist in the completion of laser communication, a combination of different target detection algorithms and long-term tracking KCF algorithm is proposed. Through comparison, it is found that the average frame rate of the YOLOV5+DSST+KCF(YDK) algorithm is 12 frames per second, when the frame rate meets the system requirements, the response peak value of the YDK algorithm is 43.5% and 31.4% higher than the original KCF algorithm and HAAR+DSST+KCF(HDK) algorithm, respectively, and effectively solved the problem of target scale change.