The achievements of the dedicated Compass SLR system with 1m aperture telescope: GEO satellite daylight tracking and Laser Time Transfer (LTT)

Since 2008, Shanghai Observatory began to construct the dedicated SLR system with 1 meter aperture telescope for tracking Chinese Compass satellite from 20,000 to 40,000km with the precision of 2~3cm. Now the dedicated SLR system has the ability to routinely track Compass satellites at the night and daytime. This paper presents the achievements and measuring results of the SLR system: daylight tracking Compass GEO/IGSO satellites and the LTT experiments with improved LTT payload onboard IGSO satellite.