摘要
去除抖动信号是机械抖动激光陀螺信号处理电路的重要工作,针对目前现有的机械抖动激光陀螺解调方法存在的缺陷,本文提出了抖动剥除和FIR滤波器相结合的一种解调方法,以满足机抖激光陀螺在快速跟踪中的应用要求。实验结果表明,抖动剥除后,陀螺计数脉冲中的抖动信号衰减了近75dB,可以直接用于精度要求不高实时输出角速率的场合。抖动剥除后用低阶的FIR低通滤波器滤除剩余的抖动偏频量和高频噪声,在保证小时延的基础上提高了精度。
Dither signal rew, oval is the important work of mechanical dithered ring laser gyro （MDRLG） signal processor. In view of the limitation of present dither signal removal method in fast tracking use, a new method combining dither stripper with FIR filter is proposed in this paper. Results show that the dither signal in gyro count can be attenuated about 75dB after dither stripper, which can be used in the situation that real time angular rate output is needed. The residual dither signal and high frequency noise can be removed by FIR low pass filter, then the performance is improved under the condition of short time delay.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2010年第2期163-166,共4页
Journal of National University of Defense Technology
