Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Development of beam scheduling algorithm for frequency diverse array /
Download
index.pdf
Date
2015
Author
Çetiner, Ramazan
Metadata
Show full item record
Item Usage Stats
257
views
144
downloads
Cite This
Electronic scanning is the most desirable feature of radar systems. With electronic scanning, it is possible to steer the main beam of an array antenna instantaneously into a desired direction where no mechanical mechanism is involved in the scanning process. Electronic scanning methods including phase scanning, time delay scanning, and frequency scanning have been used in various radar applications; however new and cheaper scanning methods are still being investigated. It is the purpose of this thesis to investigate an array configuration called frequency diverse array (FDA), which gives rise to range, time, and angle dependent scanning without using phase shifters. In this study, mathematical analysis of FDA are made and DDS based FDA beamforming network is designed. Also FDA implementation is realized with this network. Justification of the mathematical derivations is made by the results of the measurements with the implemented structure. Besides, simulations and measurements of the array with various amplitude tapering coefficients are performed. The drawbacks are also reported during the study, which will be useful for future studies on the subject.
Subject Keywords
Antenna arrays.
,
Antennas (Electronics).
,
Radar
,
Beamforming.
,
Signal processing.
URI
http://etd.lib.metu.edu.tr/upload/12618627/index.pdf
https://hdl.handle.net/11511/24535
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
An Investigation of beam scanning of arrays on cylindrical, conical and spherical surfaces
Takak, Yücel; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2015)
Recently, wide angle scanning antennas are often required especially in many radar applications. It is known that planar arrays have limited scan range without beam deformation. In this study design and production steps for wide angle scanning antenna arrays conformed on cylindrical, conical and spherical surfaces that operate at X-Band are investigated. Antenna elements used in these conformal arrays are designed using full wave electromagnetic solver tool HFSS. A MATLAB code for obtaining array patterns i...
Method of moments analysis of slotted waveguide antenna arrays
Altuntaş, Abdülkerim; Alatan, Lale; Department of Electrical and Electronics Engineering (2014)
Slotted waveguide antenna arrays are used extensively in many applications because of their high power handling capability, planarity, low loss and reduced profile. After the synthesis of such an array, the design should be verified by analyzing the array with an efficient simulation tool which is accurate, fast and flexible. Although FEM (Finite Element Method) based commercial softwares are very accurate and flexible, they are not sufficiently fast especially when it comes to optimization and fine tuning....
Design of a novel low-loss frequency scanning antenna
Alkış, Sena; Ergül, Özgür Salih; Department of Electrical and Electronics Engineering (2019)
In antenna engineering, frequency scanning arrays are well-known with their ability to provide low-cost electronic scanning capability. However, in many studies on these arrays, the loss of the structure is overlooked. In this study, a novel low-loss frequency scanning antenna structure is proposed. The design is a composition of a feeding waveguide utilized for frequency scanning in one plane and an array of eight elements in the other plane, which is repeated along the frequency scanning axis. The loss of...
Subspace based radar signal processing methods for array tapering and sidelobe blanking
Dinler, Doğancan; Candan, Çağatay; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2017)
The discretization of the signal impinging on several hundreds, even thousands, of receiving elements has become a common problem in modern phased array radar systems along with the developments in the digital signal processing. The spatial and temporal processing of such large dimensional data is too challenging for all steps of signal processing. This thesis is focused on the subspace methods that making the processing of the full dimensional data feasible at reduced dimensions. The first objective of the...
Performance Comparison of Target Tracking Algortihms in Underwater Environment
Ege, Emre; Saranlı, Afşar (2008-04-22)
Target tracking is one the most fundamental elements of a radar system. The aim of target tracking is the reliable estimation of a target's true state based on a time history of noisy sensor observations. In real life, the sensor data may include substantial noise. This noise can render the raw sensor data unsuitable to be used directly. Instead, we must filter the noise, preferably in an optimal manner. For land, air and surface marine vehicles, very successful filtering methods are developed. However, bec...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
R. Çetiner, “Development of beam scheduling algorithm for frequency diverse array /,” M.S. - Master of Science, Middle East Technical University, 2015.