发明名称 |
Multichannel interferometer with phase generated carrier demodulation and quadrature error correction |
摘要 |
<p>Apparatus for eliminating sign uncertainty in a coherent phase generated carrier demodulator in a multi-channel sensor system has a downconverter array arranged to separate the in-phase component I and the quadrature phase component of the sensor output for each channel. A coordinate transformer uses the in-phase component and quadrature phase component to calculate an arctangent for the phase angle for each channel. A digital signal processor adds 180° to each arctangent calculation for which the tangent is a negative number.</p> |
申请公布号 |
AU2002252807(B2) |
申请公布日期 |
2006.05.11 |
申请号 |
AU20020252807 |
申请日期 |
2001.07.24 |
申请人 |
LITTON SYSTEMS, INC. |
发明人 |
PAUL, LOUIS GREENE;GREGORY, ALAN GIBBONS;WILLIAM, CHRISTOPHER KNAACK |
分类号 |
G01M11/00;H04L27/00;G01D5/353;G01D5/36;H04J14/02;H04L27/20;H04L27/22 |
主分类号 |
G01M11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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