振动对遥感载荷频率基准的影响及数字补偿技术研究  

Effects of vibration on frequency source of remote sensing load and the research of digital compensation technique

作　　者：单庆晓[1] 纪龙蛰[1] 杨俊[1] 黄飞江[2] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073 [2]长沙学院电子与通迅工程系,湖南长沙410073

出　　处：《国防科技大学学报》2013年第1期147-150,共4页Journal of National University of Defense Technology

摘　　要：振动会导致雷达上晶体振荡器的工作频率发生变化,严重影响了雷达的工作性能。分析了振动对遥感卫星频率基准的影响机理,提出了针对加速度g的数字补偿技术。实验证明该方法可有效降低频率基准的加速度敏感性,在减小振动对频率基准影响方面具有广泛的应用前景。Vibration can influence the frequency stability of crystal oscillators in radar and worsen the working performance of the system deeply. Thus how vibration influences the reference frequency source on remote sensing satellites, brought up the digital compensating technique of acceleration g was analyzed. Some experiment results proved that this method can reduce the acceleration sensitivity of frequency source. This research has wide application potential for reducing the acceleration effects on frequency resource.

关 键 词：振动 晶体振荡器 SAR 数字补偿 

分 类 号：TN919.6[电子电信—通信与信息系统]