摘要
提出了一种在激光星间链路过程中的卫星平台振动补偿方案。采用CCD探测器代替角度传感检测振动,简化了卫星光通信跟瞄系统。在激光星间链咯中,卫星平台角振动对光束的跟瞄有较大的影响,采用前馈补偿方式实现较好的抑制。在实验室中建立了卫星平台振动模拟装置和前馈振动补偿系统,针对卫星平台的实际振动情况进行了模拟实验。结果表明,对于100Hz卫星平台角振动,当CCD采样频率大于1kHz时,补偿后的瞄准误差与补偿前相比下降了71%。
A method of compensating the satellite vibrations in intersatellite laser links was presented. The satellite vibrations were detected by a CCD instead of the traditional angular sensors, so the tracking system was simplified. The angular errors from the satellite vibrations influence the beam tracking, while these errors can be well compensated by a feedforward control system. An experimental study on the vibration compensation technology was performed, and a vibration simulation device and a feedforward compensation system were built in the lab. Using a CCD with the sampling frequency of 1 kHz, tracking errors can be reduced by 71% after vibration compensation when the frequency of angular vibrations is 100 Hz.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2004年第4期472-476,共5页
Journal of Optoelectronics·Laser
