摘要
为提高石英角速率传感器(QRS)的测量性能,提出了基于数字相关检测技术的QRS信号解调方案。该方案需将一组互相正交的参考信号作为两个相关器的输入,能够同时分离出QRS敏感信号相对于参考信号的同相分量和正交分量。通过角速度提取算法可由以上分量进一步得到输入角速度。分析了实现参考通道功能的两种方法:锁相环(PLL)和Hilbert变换,通过对这两种方法的对比得知,PLL更适合作为QRS相关检测的参考通道。
A method for quartz rate sensor（QRS） using digital correlation detection is proposed to improve the performance of QRS.It requires a pair of orthogonal signals as input of two correlates,which can extract the in-phase and quadrature-phase component from QRS＇ readout signal.Then the input angular rate will be obtained from these two components.A reference channel is used to generate a pair of orthogonal signals.Phase-locked loop（PLL） and Hilbert transform can be used as the reference channel.By comparison it is concluded that the PLL has better performance than Hilbert transform.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2007年第4期116-120,共5页
Journal of National University of Defense Technology
