发明公开
EP1917500A1 DEMODULATION OF PHASE MODULATED FIBRE-OPTIC SENSOR SYSTEM SIGNALS
有权
一个移相器的光学传感器系统的相位调制信号的解调
- 专利标题: DEMODULATION OF PHASE MODULATED FIBRE-OPTIC SENSOR SYSTEM SIGNALS
- 专利标题(中): 一个移相器的光学传感器系统的相位调制信号的解调
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申请号: EP06765299.0申请日: 2006-08-17
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公开(公告)号: EP1917500A1公开(公告)日: 2008-05-07
- 发明人: NASH, Philip, John , TYLER, David, John , MIDDLETON, Nicholas
- 申请人: QINETIQ LIMITED
- 申请人地址: 85 Buckingham Gate London SW1E 6PD GB
- 专利权人: QINETIQ LIMITED
- 当前专利权人: QINETIQ LIMITED
- 当前专利权人地址: 85 Buckingham Gate London SW1E 6PD GB
- 代理机构: Northway, Daniel Robert
- 优先权: GB0517210 20050823
- 国际公布: WO2007023260 20070301
- 主分类号: G01D5/353
- IPC分类号: G01D5/353
摘要:
Demodulation apparatus (150) for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) (157) for generating in-phase (I) and quadrature-phase (Q) signals in response to an unmodulated input signal. The QSG provides fast frequency tracking of the input signal and excludes any high-frequency content the input signal.
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