Sıkıştırılmış Algılama ile Milimetredalga Görüntüleme: Modulasyon Frekansı ve Veri Tipi Etkileri

Date

2018-05-02

Author

ŞENGÜN ERMEYDAN, ESRA
Mete, Mustafa
ŞAHİN, ASAF BEHZAT
Altan, Hakan
ÇANKAYA, İLYAS

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

126
views

0
downloads

Millimeter wave imaging is a promising field that can be used in many areas, primarily in defense and security. The lack of high-resolution two-dimensional imaging detectors that work in this band, as well as the cost of measurements in this frequency band being high, make single-pixel imaging configuration attractive. Data acquisition with compressed sensing is preferred to reduce the number of measurements. In this study, an experimental study of millimeter-wave imaging at 60 GHz center frequency is presented. The masks used in compressed sensing are designed to have a new mask in each row/column motion to approach real time imaging. The effect of the acquired data type and modulation frequency on the reconstructed image is investigated.

Subject Keywords

Compressed Sensing , Millimeterwave Imaging , Sub-Nyquist , Single Pixel Imaging , Total Variation Minimization

URI

https://hdl.handle.net/11511/40321

DOI

https://doi.org/10.1109/siu.2018.8404848

Collections

Department of Physics, Conference / Seminar

Suggestions

OpenMETU
Core

Deep learning-based reconstruction methods for near-field MIMO radar imaging Manisalı, İrfan; Öktem, Sevinç Figen; Department of Electrical and Electronics Engineering (2022-6-29) Near-field multiple-input multiple-output (MIMO) radar imaging systems are of interest in diverse fields such as medicine, through-wall imaging, airport security, and surveillance. These computational imaging systems reconstruct the three-dimensional scene reflectivity distribution from the radar data. Hence their imaging performance largely depends on the image reconstruction method. The analytical reconstruction methods suffer from either low image quality or high computational cost. In fact, sparsity-bas...
Optimal design of sparse mimo arrays for wideband near-field imaging based on a statistical framework Kocamış, Mehmet Burak; Öktem, Sevinç Figen; Department of Electrical and Electronics Engineering (2018) Wideband near-field imaging is an emerging remote sensing technique in various applications such as airport security, surveillance, medical diagnosis, and through-wall imaging. Recently, there has been increasing interest in using sparse multiple-input-multiple-output (MIMO) arrays to achieve high resolution with reduced hardware complexity and cost. In this thesis, based on a statistical framework, an optimal design method is presented for two-dimensional MIMO arrays in wideband near-field imaging. Differe...
Terahertz (>0.3THz) active imaging systems İdikut, Fırat; Altan, Hakan; Department of Physics (2016) Imaging systems based on terahertz waves are becoming an integral part of commercial and military screening applications. In this thesis, the prototype of active scan THz imaging system was constructed for detection of concealed objects at standoff distance longer than 5m. The system was mounted on a platform that can adjust in height, tilt and azimuthal angle. The methods of generation and detection of THz signal are based on Schottky diode rectifiers and Schottky diode mixers. The wavelength of the contin...
Novel methods in modulation and detection of terahertz waves for imaging applications Takan, Taylan; Altan, Hakan; Department of Physics (2018) Terahertz radiation, due to its unique properties offers a plethora of possibilities of applications in various domains including security & defense, communications, material characterization, product inspection and medical imaging. In all these fields, cost-effective, high-resolution, and high-speed terahertz imaging is a greatly desired technology. However due the inherent challenges associated with terahertz detection, building a terahertz imaging system that satisfies all these requirements necessitates...
Analysis of near-field ultra-wideband radar imaging algorithms Arabacı, Ahmet; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2017) Recently, near-field ultra-wideband radar imaging algorithms have an important place in short range imaging applications by providing high resolution in both range and cross-range. In this study, the near-field ultra-wideband radar imaging algorithms in the literature such as Holographic Image Reconstruction Algorithm, Range Migration Algorithm, MIMO Based Range Migration Algorithm and MIMO Based Kirchhoff Migration Algorithm have been implemented using MATLAB. The algorithms are applied to modeled transmit...

Citation Formats

E. ŞENGÜN ERMEYDAN, M. Mete, A. B. ŞAHİN, H. Altan, and İ. ÇANKAYA, “Sıkıştırılmış Algılama ile Milimetredalga Görüntüleme: Modulasyon Frekansı ve Veri Tipi Etkileri,” 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40321.