Abstract: Resolutiaon is one of the most important factors to estimate the performance of a remote sensor.Because a remote sensor gets image during the process of satellite travelling,and this,no doubt,will introduce an image distortion,we must make an accurate image motion compensation to get a higher ground imaging resolution.A phase-locked loop with the chara- cteristics of rapid response,low power consumption,antijamming and accuracy of 0.1% is designed in this paper.It can meet the requirement of 5-meter ground resolution.

Key words: Remote sensor, Image motion compensation, Speed control, Phase-locked loop, Design