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![Coherent Frequency-Modulated Continuous Wave Ladar Using a Distributed Feedback Laser Array için kapak resmi Coherent Frequency-Modulated Continuous Wave Ladar Using a Distributed Feedback Laser Array için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Coherent Frequency-Modulated Continuous Wave Ladar Using a Distributed Feedback Laser Array
Başlık:
Coherent Frequency-Modulated Continuous Wave Ladar Using a Distributed Feedback Laser Array
Yazar:
DiLazaro, Thomas, author.
ISBN:
9780438007765
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (177 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Includes supplementary digital materials.
Advisors: George Nehmetallah.
Özet:
Optical frequency-modulated continuous-wave (FMCW) reflectometry is a ranging technique that allows for high-resolution distance measurements over long ranges. Similarly, swept-source optical coherence tomography (SS-OCT) provides high-resolution depth imaging over typically shorter distances and higher scan speeds. In this dissertation, a novel, low-cost, low-bandwidth ranging and imaging system is presented that provides the high axial resolution normally associated with SS-OCT over meters of depth. The imaging system combines 12 distributed feedback laser (DFB) elements from a single butterfly module to provide an axial resolution of 27 microns. Active sweep linearization is used, greatly reducing the signal processing overhead. A laser phase noise model is derived to provide insight into the measurement accuracy. Various sub-surface, OCT-style tomograms of semi-transparent objects are shown, as well as 3-D maps of various objects over depths ranging from sub-millimeter to several meters. Such imaging capability would make long-distance, high-resolution surface interrogation possible in a low-cost, compact package.
Notlar:
School code: 0043
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(678726.1) | 678726-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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