Author: Traian DogaruPublisher:
ISBN:
Category : Radar
Languages : en
Pages : 21
Book Description
Through-the-wall Radar Simulations for Complex Room Imaging
Author: Traian DogaruThrough-the-Wall Radar Imaging
Author: Moeness G. AminPublisher: CRC Press
ISBN: 1351834037
Category : Technology & Engineering
Languages : en
Pages : 647
Book Description
Through-the-wall radar imaging (TWRI) allows police, fire and rescue personnel, first responders, and defense forces to detect, identify, classify, and track the whereabouts of humans and moving objects. Electromagnetic waves are considered the most effective at achieving this objective, yet advances in this multi-faceted and multi-disciplinary technology require taking phenomenological issues into consideration and must be based on a solid understanding of the intricacies of EM wave interactions with interior and exterior objects and structures. Providing a broad overview of the myriad factors involved, namely size, weight, mobility, acquisition time, aperture distribution, power, bandwidth, standoff distance, and, most importantly, reliable performance and delivery of accurate information, Through-the-Wall Radar Imaging examines this technology from the algorithmic, modeling, experimentation, and system design perspectives. It begins with coverage of the electromagnetic properties of walls and building materials, and discusses techniques in the design of antenna elements and array configurations, beamforming concepts and issues, and the use of antenna array with collocated and distributed apertures. Detailed chapters discuss several suitable waveforms inverse scattering approaches and revolve around the relevance of physical-based model approaches in TWRI along with theoretical and experimental research in 3D building tomography using microwave remote sensing, high-frequency asymptotic modeling methods, synthetic aperture radar (SAR) techniques, impulse radars, airborne radar imaging of multi-floor buildings strategies for target detection, and detection of concealed targets. The book concludes with a discussion of how the Doppler principle can be used to measure motion at a very fine level of detail. The book provides a deep understanding of the challenges of TWRI, stressing its multidisciplinary and phenomenological nature. The breadth and depth of topics covered presents a highly detailed treatment of this potentially life-saving technology.
Sparsity-Based Multipath Exploitation for Through-the-Wall Radar Imaging
Author: Michael LeigsneringPublisher: Springer
ISBN: 3319742833
Category : Technology & Engineering
Languages : en
Pages : 124
Book Description
This thesis reports on sparsity-based multipath exploitation methods for through-the-wall radar imaging. Multipath creates ambiguities in the measurements provoking unwanted ghost targets in the image. This book describes sparse reconstruction methods that are not only suppressing the ghost targets, but using multipath to one’s advantage. With adopting the compressive sensing principle, fewer measurements are required for image reconstruction as compared to conventional techniques. The book describes the development of a comprehensive signal model and some associated reconstruction methods that can deal with many relevant scenarios, such as clutter from building structures, secondary reflections from interior walls, as well as stationary and moving targets, in urban radar imaging. The described methods are evaluated here using simulated as well as measured data from semi-controlled laboratory experiments.
Simulation Studies on Through-wall Radar Imaging
Author: Wilson Wei Hsen ThamPublisher:
ISBN:
Category : Ultra-wideband devices
Languages : en
Pages :
Book Description
Radar Scattering and Imaging of Rough Surfaces
Author: Kun-Shan ChenPublisher: CRC Press
ISBN: 1351011561
Category : Technology & Engineering
Languages : en
Pages : 323
Book Description
Radar scattering and imaging of rough surfaces is an active interdisciplinary area of research with many practical applications in fields such as mineral and resource exploration, ocean and physical oceanography, military and national defense, planetary exploration, city planning and land use, environmental science, and many more. By focusing on the most advanced analytical and numerical modeling and describing both forward and inverse modeling, Radar Scattering and Imaging of Rough Surfaces: Modeling and Applications with MATLAB® connects the scattering process to imaging techniques by vivid examples through numerical and experimental demonstrations and provides computer codes and practical uses. This book is unique in its simultaneous treatment of radar scattering and imaging. Key Features Bridges physical modeling with simulation for resolving radar imaging problems (the first comprehensive work to do so) Provides excellent basic and advanced information for microwave remote-sensing professionals in various fields of science and engineering Covers most advanced analytical and numerical modeling for both backscattering and bistatic scattering Includes MATLAB® codes useful not only for academics but also for radar engineers and scientists to develop tools applicable in different areas of earth studies Covering both the theoretical and the practical, Radar Scattering and Imaging of Rough Surfaces: Modeling and Applications with MATLAB® is an invaluable resource for professionals and students using remote sensing to study and explain the Earth and its processes. University and research institutes, electrical and radar engineers, remote-sensing image users, application software developers, students, and academics alike will benefit from this book. The author, Kun-Shan Chen, is an internationally known and respected engineer and scientist and an expert in the field of electromagnetic modeling.
EM Modeling of UWB Through-wall Radar Imaging Using the High-frequency Geometrical Optics (GO)
Author: Seng-Lee FooPublisher: Defence R&D Canada - Ottawa
ISBN:
Category :
Languages : en
Pages : 42
Book Description
Numeric Simulations for Sensing Through the Wall Radar
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
This paper presents numeric simulations related to sensing through the wall radar technologies. Our computational approaches include the Finite Difference Time Domain (FDTD) algorithm and the shooting and bouncing ray technique (Xpatch). We analyze the radar signatures of the human body and other objects, in free-space and inside a room. The emphasis is on radar scattering phenomenology, with results presented as Radar Cross Section (RCS) and Synthetic Aperture Radar (SAR) images.
Advances in Detection and Classification for Through-the-wall Radar Imaging
Author: Christian DebesThrough the wall radar simulations using polarimetric antenna patterns
Author: Traian DogaruPublisher:
ISBN:
Category : Detectors
Languages : en
Pages : 46
Book Description
Physics-based Inverse Processing and Multi-path Exploitation for Through-wall Radar Imaging
Author: Paul Chinling ChangPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Abstract: Microwave imaging of hidden targets in a complex scattering medium has drawn much attention as it can be used to gather information of concealed targets. Among these, through-wall radar imaging (TWI) is an emerging technology for "seeing" through walls to determine building layout and occupancy. This dissertation focuses on the development of special signal processing techniques to address the impact of wall distortion on the interior image. The goal is to develop radar imaging techniques that incorporate electromagnetic propagation models of the wall structure to improve target restoration.