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Author: Ossowska, Alicja
Publisher: KIT Scientific Publishing
ISBN: 3731503158
Category :
Languages : en
Pages : 258
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Book Description
Author: Ossowska, Alicja
Publisher: KIT Scientific Publishing
ISBN: 3731503158
Category :
Languages : en
Pages : 258
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Book Description
Author: Alicja Ossowska
Publisher:
ISBN: 9781013283949
Category : Technology & Engineering
Languages : en
Pages : 252
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Book Description
The present work deals with a highly resolved radar with a synthetic aperture (synthetic aperture radar - SAR), which uses a beam steering to improve performance. The first part of this work deals with the influence of various effects occurring in the hardware of the High-Resolution Wide-Swath SAR (HRWS SAR) system. A special focus was set to single bit quantization in multi-channel receiver. The second part of this work describes SAR processors for Sliding Spotlight mode. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Author: May Abo Elhassan
Publisher: GRIN Verlag
ISBN: 3346675289
Category : Technology & Engineering
Languages : en
Pages : 276
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Doctoral Thesis / Dissertation from the year 2020 in the subject Electrotechnology, , language: English, abstract: In this thesis, a PSO optimization algorithm is applied using a developed technique to synthesize the radiation patterns required for high-resolution land imaging SAR and satellite communications using planar rectangular or concentric circular arrays. The goal of the PSO algorithm is to get the excitation coefficients of the array elements, which are, then, Microstrip patch antennas with linear or circular polarization are proposed to construct the synthesized-beam arrays required for the considered application. A wide band rectangular patch antenna with U-slot is proposed for planar arrays with linear polarization. A square patch antenna with four truncated corners and four axial slots is designed for planar rectangular and circular arrays. Finally, a square patch antenna with two L-shaped slots inserted at diagonally opposite corners is designed for planar concentric circular arrays. Turnstile arrays of either dipole elements or U-slotted microstrip patch antennas excited with circulating phase shift are proposed to construct planar arrays with circular polarization for land-imaging SAR systems and satellite communications. Synthetic Aperture Radar (SAR) is used for remote sensing to create two-dimensional images of land covers on the earth’s surface. Such a land-imaging system has a great importance in many civilian and military applications. The SAR uses the radar antenna to scan a ground area to provide microwave images with fine spatial resolution. The SAR is typically mounted on an aircraft or spacecraft, and usually has a form of side-looking radar. It uses the Doppler and time delay information of the ground reflected wave to generate a two-dimensional image with the desired azimuth resolution (direction of motion) and range resolution (normal to the direction of motion), respectively. The SAR operation requires a physical antenna of radiation pattern with foot print of high aspect ratio and a mechanism capable of achieving beam steering and beam shaping. The SAR antenna array should be rigid, planar, deployable, and as lightweight as possible. A side-looking SAR system requires an antenna with a flat-topped beam pattern in the plane of the azimuth direction and a cosecant-squared beam shape in the plane of the range direction. For satellite communications with the ground stations, an isoflux beam is required for uniform coverage and continuity during the communication session.
Author: Abadpour, Sevda
Publisher: KIT Scientific Publishing
ISBN: 3731513161
Category :
Languages : en
Pages : 194
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During the evolvement of autonomous driving technology, obtaining reliable 3-D environmental information is an indispensable task in approaching safe driving. The operational behavior of automotive radars can be precisely evaluated in a virtual test environment by modeling its surrounding, specifically vulnerable road users (VRUs). Such a realistic model can be generated based on the radar cross section (RCS) and Doppler signatures of a VRU. Therefore, this work proposes a high-resolution RCS measurement technique to determine the relevant scattering points of different VRUs.
Author: Jianyu Yang
Publisher: Elsevier
ISBN: 0128224606
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
Bistatic Synthetic Aperture Radar covers bistatic SAR in a comprehensive way, presenting theory, method and techniques, as well as the most recent research and near-future applications. The book begins with imaging principles and characteristics of monostatic SAR, moving on to common and novel problems before presenting theories, methods and experimental system design. The title presents the design of experimental systems, research results and experimental verification. It gives key knowledge from a leading research group, including one of the earliest bistatic side-looking SAR experiments and the first bistatic forward-looking SAR experiment in the world that used two aircraft. Six chapters cover imaging theory, imaging algorithms, parameter estimation, motion compensation, synchronization and experimental verification. The book describes physical concepts simply and clearly and provides concise mathematical derivations. Presents comprehensive theory and methods for bistatic SAR, including the design of experimental systems and verification Considers different configurations, including translational variant bistatic SAR and bistatic forward-looking SAR Gives insights based on a world-leading research program into bistatic SAR, including practical tips on theory and method Covers novel experiments, including the first bistatic forward-looking SAR experiment using two aircraft Offers researchers clear descriptions of physical concepts and concise mathematical derivations to help master bistatic SAR
Author: Diewald, Axel
Publisher: KIT Scientific Publishing
ISBN: 3731512963
Category :
Languages : en
Pages : 190
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Book Description
Radar target simulators (RTSs) deceive a radar under test (RuT) by creating an artificial environment consisting of virtual radar targets. In this work, new techniques are presented that overcome the rasterization deficiency of current RTS systems and enable the generation of virtual targets at arbitrary high-precision positions. This allows for continuous movement of the targets and thus a more credible simulation environment.
Author: John J. Kovaly
Publisher: Artech House Publishers
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 366
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Author: Visentin, Tristan
Publisher: KIT Scientific Publishing
ISBN: 3731508885
Category :
Languages : en
Pages : 190
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Author: Ninos, Alexandros
Publisher: KIT Scientific Publishing
ISBN: 3731512254
Category : Technology & Engineering
Languages : en
Pages : 164
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The aim of this work is the development of a Radar system for consumer applications. It is capable of tracking multiple people in a room and offers a touchless human-machine interface for purposes that range from entertainment to hygiene.
Author: Girma, Mekdes
Publisher: KIT Scientific Publishing
ISBN: 3731509385
Category : Technology & Engineering
Languages : en
Pages : 178
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Book Description
