DEMODULATION REFERENCE SIGNAL SOURCE
An information retrieval system for extracting information from a pair of substantially coherent electromagnetic waves represented by phase differences therebetween each of which is incident on a photodetector, and having a demodulator which receives the photodetector output signal and which also re...
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| Main Authors | , , |
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| Format | Patent |
| Language | English French German |
| Published |
22.06.1994
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| Edition | 5 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | An information retrieval system for extracting information from a pair of substantially coherent electromagnetic waves represented by phase differences therebetween each of which is incident on a photodetector, and having a demodulator which receives the photodetector output signal and which also receives a reference signal. The reference signal is obtained through use of a phase shift detector which receives the photodetector signal to determine certain phase shifts occurring therein and provides this information to a reference signal supply to adjust the phase of its output signal which then serves as the reference signal for the demodulator. |
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| AbstractList | An information retrieval system for extracting information from a pair of substantially coherent electromagnetic waves represented by phase differences therebetween each of which is incident on a photodetector, and having a demodulator which receives the photodetector output signal and which also receives a reference signal. The reference signal is obtained through use of a phase shift detector which receives the photodetector signal to determine certain phase shifts occurring therein and provides this information to a reference signal supply to adjust the phase of its output signal which then serves as the reference signal for the demodulator. |
| Author | DANE, PRESTON BLAKE, JAMES DANKWORT, RUDOLF |
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| Discipline | Medicine Chemistry Sciences Physics |
| DocumentTitleAlternate | DEMODULATION DE SOURCE DE SIGNAUX DE REFERENCE. DEMODULATIONSREFERENZSIGNALQUELLE. |
| Edition | 5 |
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| Notes | Application Number: EP19910915555 |
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| PublicationDate | 19940622 |
| PublicationDateYYYYMMDD | 1994-06-22 |
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| PublicationDecade | 1990 |
| PublicationYear | 1994 |
| RelatedCompanies | HONEYWELL INC |
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| Snippet | An information retrieval system for extracting information from a pair of substantially coherent electromagnetic waves represented by phase differences... |
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| SubjectTerms | GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING |
| Title | DEMODULATION REFERENCE SIGNAL SOURCE |
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