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48 篇 会议

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检索条件"任意字段=Conference on Radar Sensor Technology XVI"

共 48 条记录，以下是1-10 订阅

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radar tracking and classification of littoral targets

Radar tracking and classification of littoral targets

引用

conference on radar sensor technology xvi

作者： Silvious, Jerry Tahmoush, Dave USA Res Lab Adelphi MD 20783 USA

ISBN: (纸本)9780819490391

radar can provide inexpensive wide-area surveillance of river and port traffic for both security and emergency response. We demonstrate the tracking of multiple vessels as well as the micro-Doppler signatures of different classes of small vessels, including kayaks and zodiacs. The pattern of life of a river is analyzed over several days and can be used to easily identify suspicious or unusual cases.

关键词： littoral surveillance radar

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Integrated radar-camera security system - range test

Integrated radar-camera security system - range test

引用

conference on radar sensor technology xvi

作者： Zyczkowski, M. Szustakowski, M. Ciurapinski, W. Karol, M. Markowski, P. Mil Univ Technol Inst Optoelect PL-00908 Warsaw Poland

ISBN: (纸本)9780819490391

The paper presents the test results of a mobile system for the protection of large-area objects, which consists of a radar and thermal and visual cameras. radar is used for early detection and localization of an intruder and the cameras with narrow field of view are used for identification and tracking of a moving object. The range evaluation of an integrated system is presented as well as the probability of human detection as a function of the distance from radar-camera unit.

关键词： ground surveillance system millimeter wave radar thermal camera

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radar Micro-Doppler Simulations of Classification Capability with Frequency

Radar Micro-Doppler Simulations of Classification Capability...

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conference on radar sensor technology xvi

作者： Tahmoush, Dave Silvious, Jerry USA Res Lab Adelphi MD 20783 USA

ISBN: (纸本)9780819490391

Classifying human signatures using radar requires a detailed understanding of the RF scattering phenomenology associated with humans as well as their motion. We model humans engaged in the activity of walking and analyze the separability of different body parts with frequency as well as lookdown angle. This work seeks to estimate the ability to classify the micro-Doppler signals generated by human motion, and especially arm motion, as a function of the radar frequency and other parameters. The simulations imply that for classification using arm motion, frequencies at Ku-band or higher are probably required, and that lookdown angle has a significant effect on the classification capability of the radar. Additionally, the sensitivity of the system required to isolate the motion of different body parts is estimated.

关键词： radar Micro-Doppler

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Adaptive waveform scheduling in radar: an information theoretic approach

Adaptive waveform scheduling in radar: an information theore...

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conference on radar sensor technology xvi

作者： Setlur, Pawan Devroye, Natasha Univ Illinois ECE Dept Chicago IL 60680 USA

ISBN: (纸本)9780819490391

In this paper, the problem of adaptively selecting radar waveforms from a pre-defined library of waveforms is addressed from an information theoretic perspective. Typically, radars transmit specific waveforms periodically, to obtain for example, the range and Doppler of a target. Although modern radars are capable of transmitting different waveforms during each consecutive period of transmission, it is hitherto unclear as to how these waveforms must be scheduled to best understand the dynamic radar scene. In this paper, a new information theoretic metric - directed information - is employed for waveform scheduling, and is shown to incorporate the past radar returns to effectively schedule waveforms. We formulate this waveform scheduling problem in a Gaussian framework, derive the corresponding maximization problem, and illustrate several special cases.

关键词： Waveform diversity Cognitive radar Waveform scheduling Directed information Mutual information

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A new phase space method for target discrimination

A new phase space method for target discrimination

引用

conference on radar sensor technology xvi

作者： Rachford, Frederic J. Carroll, Thomas L. USN Res Lab Washington DC 20375 USA

ISBN: (纸本)9780819490391

We have developed a method for radar/sonar target discrimination employing techniques from non-linear dynamics. We demonstrate our method by simulating radar scattering from four similar targets where the radar wavelength and bandwidth resolution is on the order of the target size. We find that this method results in a high probability of target discrimination even in the presence of large amplitude noise and spurious clutter. We also present experimental data for acoustic wave scattering from two similarly sized targets. This bench top data was taken in the presence of large random noise and clutter. The identification method is shown to work over a wide range of angles.

关键词： Chaos radar target identification dimension phase space

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Preliminary performance analysis of the advanced pulse compression noise radar waveform

Preliminary performance analysis of the advanced pulse compr...

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conference on radar sensor technology xvi

作者： Govoni, Mark A. Moyer, Lee R. USA Res Dev & Engn Command Aberdeen Proving Ground MD 21005 USA Technol Serv Corp Fairfax VA 22031 USA

ISBN: (纸本)9780819490391

Noise radar systems encounter target fluctuation behavior similar to that of conventional systems. For noise radar systems, however, the fluctuations are not only dictated by target composition and geometry, but also by the non-uniform power envelope of their random transmit signals. This third dependency is of interest and serves as the basis for the preliminary analysis conducted in this manuscript. General conclusions are drawn on the implications of having a random power envelope and the impacts it could have on both the transmit and receive processes. Using an advanced pulse compression noise (APCN) radar waveform as the constituent signal, a computer simulation aids in quantifying potential losses and the impacts they might have on the detection performance of a real radar system.

关键词： noise radar random signal advanced pulse compression noise

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radar Based Full Body Screening of Passengers with Constant Motion

Radar Based Full Body Screening of Passengers with Constant ...

引用

conference on radar sensor technology xvi

作者： Hantscher, S. Schlenther, B. Lang, S. Haegelen, M. Essen, H. Tessmann, A. Fraunhofer Inst High Frequency Phys & Radar Tech Neuenahrer Str 20 D-53343 Wachtberg Germany

ISBN: (纸本)9780819490391

This paper presents a rotating W band radar performing a full body scan of persons which are moving with constant speed below the radar. The radar consists of a FMCW module sweeping the frequency between 96 GHz and 99 GHz by a varactor tuned VCO. The transmit and receive modules are fabricated in split-block technology using 100 nm metamorphic HEMT MMICs. The used 4 channel receiver operates between 84 GHz and 104 GHz and an average noise figure of 3.5 dB. Polarimetric measurements are carried out for the detection of oblong objects such as explosive tubes.

关键词： Millimeter wave integrated circuits radar signal processing Solid State Circuit Design Synthetic aperture radar

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2D and 3D ISAR image reconstruction through filtered back projection

2D and 3D ISAR image reconstruction through filtered back pr...

引用

conference on radar sensor technology xvi

作者： Ray, Timothy Cao, Yufeng Qiao, Zhijun Chen, Genshe Univ Texas Pan Amer Dept Math Edinburg TX 78539 USA I Fus Technol Inc Germantown MD 20874 USA

ISBN: (纸本)9780819490391

This paper presents a 3D filtered inversion scheme for turntable inverse synthetic aperture radar (ISAR) data from a scalar wave equation model. The proposed inversion scheme targets at the use of filtered back projection (FBP) and convolution back projection (CBP) imaging algorithms. In the paper, we also provide a derivation of a general imaging filter for the near-fields FBP and CBP imaging algorithms.

关键词： Inverse Synthetic Aperture radar (ISAR) Fourier Diffraction Theorem Turntable ISAR Filtered Back-Projection

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Synthetic Aperture radar Imaging of a Two-Story Building

Synthetic Aperture Radar Imaging of a Two-Story Building

引用

conference on radar sensor technology xvi

作者： Le, Calvin Dogaru, Traian USA Res Lab Adelphi MD 20783 USA

ISBN: (纸本)9780819490391

This paper investigates the expected performance of a ground-based, multi-story building imaging radar system through far-field and near-field computer models. We created a 3-D computer-aided design model of a complex two-story building, simulated the radar response from this complex structure for various geometries and applied synthetic aperture radar image formation algorithms consistent with the simulation scenarios. In this study, we employed the Finite Difference Time Domain method and the Xpatch software to compute the radar signatures. The numerical results give a better understanding of the phenomenology of the scattering and imaging processes and show that relying solely on the far-field scattering data at one elevation angle is not sufficient to obtain the multi-story building layout. Multiple elevation angle views are required in order to determine the location of imaged objects in the vertical direction. Xpatch simulation results in a near-field strip-map configuration suggest a way to achieve this goal within the constraints of a ground-based radar system.

关键词： Through-the-wall radar imaging synthetic aperture radar computational electromagnetics

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What maritime ISAR designers should know about ship dynamics

What maritime ISAR designers should know about ship dynamics

引用

conference on radar sensor technology xvi

作者： Doerry, A. W. Sandia Natl Labs Albuquerque NM 87185 USA

ISBN: (纸本)9780819490391

ISAR has enjoyed some success in imaging maritime targets, particularly ships. In fact, a number of maritime ISAR systems have been operational for a number of years. With ISAR, the ship's own motion is critical to forming well-resolved ISAR images. Seemingly important to accounting for ship motion is to first understand the nature of the ship motion that we are likely to encounter. Designing ships for specific motion characteristics is the domain of naval architecture. This paper presents some preliminary analysis of naval architecture principles, and typical ship designs' impact on the ISAR problem.

关键词： ISAR maritime radar motion

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