摘要
伪随机调制信号的抗干扰能力强,获得同样的信号,对系统正常运行的干扰程度比其他测试信号低。光纤陀螺的输出信号微弱,背景噪声强,在频域随机分布,增加了信号处理的难度。结合伪随机调制的优势,在原有的数字闭环信号处理的基础上,提出了一种新的信号处理方案:伪随机调制解调方案,与数字闭环方案相互配合,有效提取环境因变量,反馈至系统使之实时做出补偿,提高陀螺稳定性。
The pseudo-random modulated signal has a powerful anti-interference capacity. When we try to obtain a same signal, the influence of interference level produced by the pseudo-random modulated signal on the normally operating system is lower than the other testing signals. The output signal of optic fiber gyroscope is weak with respect to the strong background noise and randomly distributed in frequency domain, thus increases the difficulty in signal processing. Combing the advantages of pseudorandom modulati...
出处
《光电工程》
CAS
CSCD
北大核心
2002年第S1期80-83,共4页
Opto-Electronic Engineering
基金
国家863计划重点资助项目
关键词
光纤陀螺
数字闭环
伪随机调制
信号处理
Optic fiber gyroscopes
Digital closed-loop
Pseudo-random modulation
Signal processing
