The photoelectric telescope tracks space debris with the catalog. But for the night sky under cloud cover, it can not adjust the observation sequence according to the real-time cloud distribution, which results in a waste of telescope resources, and a decrease in the quantity of detected objects. The cloud imager is used for the real-time acquisition of all-sky infrared cloud image, and the observational scheduling strategy of telescope is optimized by determining the clouds' distribution and position. Opti...