Browsing by Author "Gokdogan,B.Y."
Now showing 1 - 2 of 2
- Results Per Page
- Sort Options
Conference Object Citation Count: 1Low Radar Cross Section UAV Design in X-Band;(Institute of Electrical and Electronics Engineers Inc., 2022) Aydın, Elif; Sezgin,S.; Gökdoğan, Bengisu Yalçınkaya; Gokdogan,B.Y.; Aydin,E.; Department of Electrical & Electronics Engineering; Electrical-Electronics EngineeringAs Unmanned Aerial Vehicles (UAVs) have become widespread in defense industry, the radar technology that can detect them has also improved. These improvements cause UAVs to be detected more easily, which limits their effectiveness in military usage. Although the reduction of the radar cross-section (RCS) can provide a solution to this issue, the studies regarding that is insufficient in the literature. In this study, a shaping method is recommended to reduce the RCS of UAVs, and it is shown the method is effective to address the problem. Firstly, using a simulation tool, an UAV model is designed from simple shapes and the model is validated by comparing it with the ones in literature. Secondly, RCS values are measured using vertical and horizontal polarization throughout 360 degrees by incrementing the aspect angle by one degree in X-Band using the CST Studio Suite environment. Then, considering the hardware and aerodynamic requirements as well as limitations of the UAV model, a shaping technique is applied to the body, legs and the hollow parts of the UAV model with parametric simulations. The results show that the recommended shaping technique can provide a significant reduction in the RCS of an UAV. © 2022 IEEE.Conference Object Citation Count: 1UAV Detection and Ranging with 77-81 GHz FMCW Radar;(Institute of Electrical and Electronics Engineers Inc., 2022) Çoruk, Remziye Büşra; Aydın, Elif; Demir,E.C.; Gökdoğan, Bengisu Yalçınkaya; Gokdogan,B.Y.; Aydin,E.; Department of Electrical & Electronics Engineering; Electrical-Electronics EngineeringIn this study, detection of unmanned aerial vehicles (UAV), determination of radar cross-section (RCS) values, and range estimation were performed using a commercial off-the-shelf (COTS) millimeter-wave Frequency Modulated Continuous Wave (mmWave FMCW) radar system in the 77-81 GHz frequency band. The measurements were carried out in a laboratory environment using a single transceiver antenna without the need for an anechoic chamber. RCS values of different vertically and horizontally positioned UAVs were measured experimentally along the 360o aspect angle, and the simulated results obtained from computational tool were compared with the experimental results. The measurement and simulation results, together with the range estimation, matched with high accuracy. © 2022 IEEE.