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Complex Natural Resonances Of An Object In Detection And Discrimination
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Book Synopsis Complex Natural Resonances of an Object in Detection and Discrimination by : Richard K. Mains
Download or read book Complex Natural Resonances of an Object in Detection and Discrimination written by Richard K. Mains and published by . This book was released on 1974 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report extends and formalizes the concept of using the complex natural resonances of objects as a tool in radar target discrimination. The complex natural resonances which characterize an object are found to be excitation invariant; i.e., the positions of the resonances in the complex frequency plane do not shift as the object is viewed along different incident directions or with different polarizations, which permit a minimum amount of data to be used in object discrimination. Once the dominant (low frequency or long time) natural resonances have been obtained for those objects of interest, a predictor-correlator type of processing can be applied to multi-frequency radar scattering data from an unknown target. It can be established from which of the known objects the scattering most likely originated. This done on the basis of correlations among the scattering and the various sets of natural resonances; the set of natural resonances showing the highest correlation identifies the most probable target.
Book Synopsis Complex Natural Resonances of Radar Targets Via Prony's Method by : C. W. Chuang
Download or read book Complex Natural Resonances of Radar Targets Via Prony's Method written by C. W. Chuang and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been shown that extraction of complex natural resonances and residues from exact transient responses via Prony's method is both efficient and accurate. However, in the art of radar interrogation the exact transient response is difficult to obtain and the authors must be content with an approximate one. Knowing the complex natural resonances of objects is essential to one type of radar target discrimination. In this paper the authors consider the use of Prony's method in extracting complex natural resonances from approximate backscattered ramp responses of radar targets. A ramp waveform is used in radar target discrimination because a good approximation to the time domain response can be obtained with only a few harmonically related frequency domain responses via Fourier synthesis. By applying Prony's method to this approximate ramp response, a few dominant resonances which are close to the origin of the complex frequency plane can be extracted. This is quite encouraging because for the purpose of radar target discrimination only a few dominant modes are needed. Objects considered are prolate spheroids, simple wire aircraft models and some realistic aircraft models. The accuracy of this method is found to be good when compared to the results obtained by other techniques.
Book Synopsis Non-Imaging Microwave and Millimetre-Wave Sensors for Concealed Object Detection by : Boris Y. Kapilevich
Download or read book Non-Imaging Microwave and Millimetre-Wave Sensors for Concealed Object Detection written by Boris Y. Kapilevich and published by CRC Press. This book was released on 2017-12-19 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to the ever-increasing global threat of terrorist attacks, the personal screening industry has been growing at a rapid rate. Many methods have been developed for detecting concealed weapons and explosives on the human body. In this important new book, the authors discuss their experiences over the last decade designing and testing microwave and millimetre wave detection and screening systems. It includes examples of actual devices that they have built and tested, along with test results that were obtained in realistic scenarios. The book focuses on the development of non-imaging detection systems, which are similar to radar. These systems do not form a conventional image of the scene and the person(s) being screened. Instead, the sensors detect and analyze the effect that the body, and any concealed objects, has on a transmitted waveform. These systems allow remote detection of both metallic and dielectric devices concealed on the human body in both indoor and outdoor environments. The book discusses a number of sensor types, including active millimetre wave sensors using the direct detection and the heterodyne approach, active microwave sensors for CNR-based object detection, passive millimetre wave sensors, and the role of shielding effects in operating non-imaging MM-wave sensors. The goal of this book is to systemize the test results obtained by the authors, helping specialists to develop improved screening systems in the future. Another goal is to show how the use of non-imaging systems can reduce the cost of the screening process.
Book Synopsis Acoustic, Electromagnetic, and Elastic Wave Scattering--focus on the T-matrix Approach by : V. K. Varadan
Download or read book Acoustic, Electromagnetic, and Elastic Wave Scattering--focus on the T-matrix Approach written by V. K. Varadan and published by Pergamon. This book was released on 1980 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Algorithms for Synthetic Aperture Radar Imagery by :
Download or read book Algorithms for Synthetic Aperture Radar Imagery written by and published by . This book was released on 1995 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing by :
Download or read book 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing written by and published by . This book was released on 1997 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Continuation of the Investigation of Multi-frequency Radar Reflectivity and Radar Target Identification by : D. L. Moffatt
Download or read book Continuation of the Investigation of Multi-frequency Radar Reflectivity and Radar Target Identification written by D. L. Moffatt and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes research during the period July 1, 1974 to June 30, 1975 under the contract on two technical objectives of the Air Force: improved detection and discrimination of radar targets and reduction of nonspecular scattering by wing geometries. The report is contained in two main sections. The first section outlines methods for deducing the complex natural resonances of arbitrary radar targets and the use of these resonances via predictor-correlator processing for detection and discrimination. Illustrative examples of both natural resonance extraction and discrimination are given for aircraft targets. The second section of the report summarizes the analysis of a loaded two-dimensional wind model for horizontal polarization. Hybrid techniques combining moment methods and the geometrical theory of diffraction are used and the loading consists of surface impedance patches. Examples of reduction of the nonspecular cross section are given. A 'folded dipole' like antenna is used as an alternate mechanism for controlling edge diffracted fields.
Book Synopsis Introduction to Ultra-Wideband Radar Systems by : James D. Taylor
Download or read book Introduction to Ultra-Wideband Radar Systems written by James D. Taylor and published by CRC Press. This book was released on 2020-09-23 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introductory reference covers the technology and concepts of ultra-wideband (UWB) radar systems. It provides up-to-date information for those who design, evaluate, analyze, or use UWB technology for any application. Since UWB technology is a developing field, the authors have stressed theory and hardware and have presented basic principles and concepts to help guide the design of UWB systems. Introduction to Ultra-Wideband Radar Systems is a comprehensive guide to the general features of UWB technology as well as a source for more detailed information.
Book Synopsis Inverse Methods in Electromagnetic Imaging by : Wolfgang M. Boerner
Download or read book Inverse Methods in Electromagnetic Imaging written by Wolfgang M. Boerner and published by . This book was released on 1985 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Electromagnetics Research by : Jin Au Kong
Download or read book Progress in Electromagnetics Research written by Jin Au Kong and published by Elsevier Science & Technology. This book was released on 1991 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Electromagnetics Research by :
Download or read book Progress in Electromagnetics Research written by and published by . This book was released on 1989 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis IEEE International Geoscience and Remote Sensing Symposium Proceedings by :
Download or read book IEEE International Geoscience and Remote Sensing Symposium Proceedings written by and published by . This book was released on 2003 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IGARSS 2003 written by and published by . This book was released on 2003 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Abinash C. Dubey Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :1066 pages Book Rating :4.3/5 (91 download)
Book Synopsis Detection Technologies for Mines and Minelike Targets by : Abinash C. Dubey
Download or read book Detection Technologies for Mines and Minelike Targets written by Abinash C. Dubey and published by SPIE-International Society for Optical Engineering. This book was released on 1995 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Institute of Electrical and Electronics Engineers. Professional Technical Group on Antennas and Propagation Publisher : ISBN 13 : Total Pages :516 pages Book Rating :4.:/5 (31 download)
Book Synopsis PTGAP international symposium by : Institute of Electrical and Electronics Engineers. Professional Technical Group on Antennas and Propagation
Download or read book PTGAP international symposium written by Institute of Electrical and Electronics Engineers. Professional Technical Group on Antennas and Propagation and published by . This book was released on 1973 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1975-05-02 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
