Ultra-geniş bantlı sentetik açıklıklı radar ile duvar içi görüntüleme

Ultra wideband tightly coupled reflectarray antenna Koldaş, Mutlu; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2022-2-08) In this thesis, an ultra wideband tightly coupled dipole reflectarray antenna is de signed, fabricated, and measured. This reflectarray consists of a wideband log-periodic dipole array feed antenna and a reflecting surface. The unit element of the reflecting surface is a tightly coupled overlapping bowtie dipole attached with a delay line to approach ultra wideband aim. Infinite array approach and Floquet port excitation ap plied in unit cell simulations to obtain reflection phase curves versus the length o...
Ultra-high-resolution low-temperature magnetic force microscopy Badami Behjat, Arash; Oral, Ahmet; Department of Physics (2019) Scanning probe microscopy is a conventional technic which has opened new methods to investigate surface properties. Imaging atoms or manipulating them as well as measuring surface structures with high resolution and accuracy are fantastic features which are utilized in surface science to study the characterization of materials. Atomic Force Microscopy (AFM) a standard popular method can measure the interaction forces between the sharp tip and the sample surface. This method allows us imaging atoms individua...
Ultra Düşük Gürültülü Fiber Fabry-Perot İnterferometresi Geliştirilmesi Oral, Ahmet(2015-12-31) Bu projede gürültü seviyesi yaklaşık olarak 1fm/√Hz olan bir fiber Fabry-Perot interferometresi geliştirilecektir. Geliştirilecek olan Fabry-Perot interferometresi öncelikle Atomik Kuvvet Mikroskoplarında (AKM), daha sonra da başka çok hassas mesafe ölçümü gerektiren deneylerde kullanılabilecektir.
Non-contact atomic force microscope in ultra high vacuum using radiation pressure excitation of cantilever with Fabry-Perot interferometer Karagöz, Ercan; Oral, Ahmet; Department of Physics (2017) In this study Non-Contact Atomic Force Microscope (NC-AFM) imaging was performed by excitation of the cantilever via radiation pressure in a custom Ultra-High Vacuum (UHV) system. Both the excitation of the cantilever and the measurement of the deflection of the cantilever were done by employing a fiber Fabry-Pérot interferometer obtained by a TiO2 coating of the fiber end. This coating allows for a several times higher interference slope. The second normal mode of the cantilever oscillation, along with the...
Matching and reconstruction of line features from ultra-high resolution stereo aerial imagery Ok, Ali Özgün; Toprak, Vedat; Soergel, Uwe; Department of Geodetic and Geographical Information Technologies (2011) In this study, a new approach for the matching and reconstruction of line features from multispectral stereo aerial images is presented. The advantages of the existing multispectral information in aerial images are fully taken into account all over the steps of pre-processing and edge detection. To accurately describe the straight line segments, a principal component analysis technique is adapted. The initial correspondences between the stereo images are generated using a new pair-wise stereo matching appro...

Citation Formats

A. E. Miran and S. S. Koç, “Ultra-geniş bantlı sentetik açıklıklı radar ile duvar içi görüntüleme,” 2016. Accessed: 00, 2020. [Online]. Available: https://app.trdizin.gov.tr/publication/project/detail/TVRVM016VTE.