Demodulation techniques for the amplitude modulated laser imager
A new technique has been found that uses in-phase and quadrature phase (I/Q) demodulation to optimize the images produced with an amplitude-modulated laser imaging system. An I/Q demodulator was used to collect the I/Q components of the received modulation envelope. It was discovered that by adjusti...
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| Veröffentlicht in: | Applied Optics 2007-10, Vol.46 (30), p.7374-7383 |
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| container_issue | 30 |
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| container_title | Applied Optics |
| container_volume | 46 |
| creator | Mullen, Linda Laux, Alan Cochenour, Brandon Zege, Eleonora P Katsev, Iosif L Prikhach, Alexander S |
| description | A new technique has been found that uses in-phase and quadrature phase (I/Q) demodulation to optimize the images produced with an amplitude-modulated laser imaging system. An I/Q demodulator was used to collect the I/Q components of the received modulation envelope. It was discovered that by adjusting the local oscillator phase and the modulation frequency, the backscatter and target signals can be analyzed separately via the I/Q components. This new approach enhances image contrast beyond what was achieved with a previous design that processed only the composite magnitude information. |
| doi_str_mv | 10.1364/AO.46.007374 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1559-128X |
| ispartof | Applied Optics, 2007-10, Vol.46 (30), p.7374-7383 |
| issn | 1559-128X 0003-6935 1539-4522 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_68419663 |
| source | MEDLINE; Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | Data Interpretation, Statistical Equipment Design Image Processing, Computer-Assisted - methods Lasers Models, Statistical Optics and Photonics |
| title | Demodulation techniques for the amplitude modulated laser imager |
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