12,951 resources related to Doppler Radar
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2017 IEEE/MTT-S International Microwave Symposium - MTT 2017
The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.
2015 IEEE International Radar Conference (RadarCon)
The scope of the IEEE 2015 International Radar Conference includes all aspects of civil and military radar. Topics range from fundamental theory to cutting-edge applications, from signal processing, modeling, simulation to hardware implementation and experimental results.
2014 International Radar Conference (Radar)
Radar 2014 cover all aspects of radar systems for civil, security and defence application. Waveform design, beamforming, signal processing, Emerging applications and technologies, sub-systems technologies, Radar environment.
2013 IEEE/AIAA 32nd Digital Avionics Systems Conference (DASC)
DASC is the premier annual conference providing authors an opportunity for publication and presentation to an international audience of papers encompassing the field of avionics systems for aircraft/rotorcraft/unmanned aircraft (commercial, military, general aviation) launch vehicles, missiles, spacecraft, and space transportation systems, navigation, guidance/control of flight, computers, communications, sensors (radar, infrared, visual bands), avionics architectures and data networking, communications networks, software, crew interface, space and ground components needed for the operation of military, commercial, and business aircraft, and avionics electrical power generation and control, Student papers are entered into a judged competition.
2012 European Radar Conference (EuRAD)
Radar technology, system design and applications. Main topics: Radar sub-systems (including phased arrays and reconfigurable and multifunction radar front-ends) and phenomenology. Radar signal processing. Radar architectures and systems. Radar applications.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
It is expected that GRS Letters will apply to a wide range of remote sensing activities looking to publish shorter, high-impact papers. Topics covered will remain within the IEEE Geoscience and Remote Sensing Societys field of interest: the theory, concepts, and techniques of science and engineering as they apply to the sensing of the earth, oceans, atmosphere, and space; and ...
Theory, concepts, and techniques of science and engineering as applied to sensing the earth, oceans, atmosphere, and space; and the processing, interpretation, and dissemination of this information.
Published monthly with the purpose of providing fast publication of original and significant contributions relevant to all aspects of microwave/millimeter-wave technology. Emphasis is on devices, components, circuits, guided-wave structures, systems and applications covering the frequency spectrum from microwave and beyond, including submillimeter-waves and infrared.
A. B. Kostinski; A. C. Koivunen IEEE Transactions on Geoscience and Remote Sensing, 2000
The authors examine the reasons behind the fact that the Gaussian autocorrelation-function model, widely used in remote sensing, yields a particularly ill-conditioned sample-covariance matrix in the case of many strongly correlated samples. The authors explore the question numerically and relate the magnitude of the matrix-condition number to the nonnegativity requirement satisfied by all correlation functions. They show that the condition ...
Chiouguey Chen; G. Thomas; B. C. Flores; S. D. Cabrera Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation, 1994
Two approaches are described to obtain range-Doppler images using either adaptive weighted norm extrapolation or autoregressive modeling. These approaches are used to extend two dimensional data in the frequency-space aperture plane. The data collection process is viewed as sampling limited to a two dimensional window area, corresponding to a set of frequency bounds and observation angles. Image formation is achieved ...
John E. Kiriazi; Olga Boric-Lubecke; Victor M. Lubecke 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009
The radar cross section (RCS) corresponding to human cardio-respiratory motion is measured for a subject in two different recumbent positions. Lying face-up (supine), the subject showed an RCS of 0.326 m2. But when lying face-down (prone), the RCS increased to 2.9 m2. This is the first reported RCS measurement corresponding to human cardio-respiratory motion. The results obtained in this experiment ...
Wifliam W. Shrader; V. Gregers Hansen IEEE Transactions on Aerospace and Electronic Systems, 1980
A frequent compromise in the design of long-range search radars has to be made between the maximum unambiguous detection range and the achievable coherent clutter rejection performance. A new class of waveforms is introduced which offers the designer a previously unavailable flexibility in arriving at radar designs with improved clutter rejection without seriously affecting the maximum unambiguous search range. The ...
Xu Cheng; Yuliang Chang; Bin Rao; Jin Liu; Yongzhen Li 2013 European Radar Conference, 2013
Full polarization radar systems can exploit full polarization to obtain a better degree of TFD's image formation of micro-Doppler target. In this paper, the polarimetric optimization algorithm to improve the TFD's image formation of micro-Doppler has been proposed. The effectiveness of the algorithm is demonstrated by the simulation experiment as well as by the measurement experiment of a space precession ...
Radar Symposium, 2008 International, 2008
In a typical surveillance radar, decision about the existence of a target in certain range-azimuth-elevation cell is made from the echo received in current scan, while still there is useful information in history of that range cell that is not considered in decision making. Based on the potential of the Hough transform to use history of both range and Doppler ...
Intelligent Signal Processing Conference 2013 (ISP 2013), IET, 2013
Three novel micro-Doppler feature extraction algorithms are presented and applied to a dataset containing real X-band radar data of moving ground targets. In each case data dimensional reduction was carried out using principal component analysis (PCA) and incorporated into the feature extraction process. Extracted features are classified using a support vector machine (SVM) classifier. It was found that all three ...
Radar Conference, 2005 IEEE International, 2005
Micro-Doppler features can be regarded as a unique signature of an object with movements and provide additional information for classification, recognition and identification of the object. Independent component analysis (ICA) can decompose micro-Doppler features into independent basis functions that represent salient physical movement attributes of the object. To study ICA of micro-Doppler features, we used a dataset generated by simulation ...
Microwave Symposium (IMS), 2014 IEEE MTT-S International, 2014
Frequency modulated continuous wave (FMCW) radar is moving from long range detection to indoor short distance target monitoring and has already demonstrated its unique advantages over other approaches. The state-of-the-art coherent FMCW radar, especially, can provide very accurate result in small motion signal detection. However, the performance is sensitive to the clutters that surround the target. In this paper, a ...
Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International, 1994
Measurements using frequency domain interferometry (FDI) are presented using the middle and upper (MU) radar in Japan. The goal of FDI observations is to enhance the altitude resolution of conventional atmospheric Doppler radars. As an introduction, the basic theory behind the technique is provided along with explanatory data. The FDI data is used to estimate the horizontal wind vector during ...
2014 Dennis J. Picard Medal for Radar Technologies and Applications
Brooklyn 5G 2016: Dr. Klaus Doppler on Virtual Reality - what it takes to be present
IMS 2011 Microapps - Volume Manufacturing Trends for Automotive Radar Devices
2012 IEEE Honors - Dennis J. Picard Medal for Radar Technologies and Applications
IMS 2012 Microapps - Virtual Flight Testing of Radar System Performance Daren McClearnon, Agilent EEsof
Nadav Levanon receives the IEEE Dennis J. Picard Medal for Radar Technologies and Applications - Honors Ceremony 2016
2013 IEEE Dennis J. Picard Medal
Green Radar State of Art: theory, practice and way ahead.
Brooklyn 5G 2016: Panel on eHealth and Virtual Reality
2015 IEEE Honors: IEEE Dennis J. Picard Medal for Radar Technologies and Applications - Marshall Greenspan
MicroApps: Radar Design Flow with NI-AWR Integrated Framework (National Instruments)
Young Professionals at N3XT: Bringing Together Tech Fields
MicroApps: Simulation of Airborne, Space-Borne and Ship-Based Radar Systems with Complex Environment (Agilent EEsof)
Co-design of Power Amplifier and Dynamic Power Supplies for Radar and Communications Transmitters
Micro-Apps 2013: Creating and Analyzing Multi-Emitter Environment Test Signals with COTS Equipment
Aperture Radar Products for the Management of Land and Water - GHTC 2012 Session - Guiseppe Ruello
Group on Earth Observations(GEOSS): Technology
ICASSP 2010 - Radar Imaging of Building Interiors
Louis Scharf receives the IEEE Jack S. Kilby Signal Processing Medal - Honors Ceremony 2016
Radar technology for sensing of physiological motion has reached the point of adoption for basic commercial applications in medicine and security. This chapter gives a brief review on some existing US Food and Drug Administration (FDA)???approved and other commercial devices followed by ongoing research efforts. Ongoing research in the field is directed toward broader, more robust applications of remote sensing of physiological motion. Remote sensing of heart rate, respiratory rate, and gross bodily motion has been demonstrated using radar technology in monitoring systems, which makes no contact with the patient. Doppler radar can be used to detect motion ranging from arbitrary limb movement to periodic chest displacement associated with cardiopulmonary activity. Technology that can capture minute changes in physiological parameters has proven highly effective at assessment of sleep in elaborate and expensive sleep laboratory studies.
This chapter derives signal???to???noise ratio (SNR) of the continuous???wave (CW) Doppler radar system for physiological monitoring. This derivation assesses the theoretical limits of the radar system and determines the factors that affect the limits so that design decisions can be made appropriately. The radar equation is used to estimate the received power, taking into account the range to the target, the transmitted power, the radar cross section (RCS), the antenna gain, the wavelength, and the range. Noise sources include radio frequency (RF) phase noise from the oscillator, environmental thermal noise, and baseband 1/f noise of the mixer and of the baseband signal???conditioning circuits. The SNR depends on the amount of noise at the mixer output from each of these sources. The chapter analyzes the variation of SNR with range, RCS, and the amount of physiological motion. It describes the effects of near???field operation on the antenna gain.
The prelims comprise: Half???Title Page Series Page Title Page Copyright Page Contents List of Contributors
This chapter contains sections titled: Introduction Doppler Radar Systems Frequency-Domain Radars Harmonic Radar Noise Radar Spatial Modulation Amplitude Modulation Summary
**Presents a comprehensive description of the theory and practical implementation of Doppler radar-based physiological monitoring** This book includes an overview of current physiological monitoring techniques and explains the fundamental technology used in remote non-contact monitoring methods. _place_holder; Basic radio wave propagation and radar principles are introduced along with the fundamentals of physiological motion and measurement. Specific design and implementation considerations for physiological monitoring radar systems are then discussed in detail. The authors address current research and commercial development of Doppler radar based physiological monitoring for healthcare and other applications. * Explains pros and cons of different Doppler radar architectures, including CW, FMCW, and pulsed Doppler radar * Discusses nonlinear demodulation methods, explaining dc offset, dc information, center tracking, and demodulation enabled by dc cancellation_ * Reviews advanced system architectures that address issues of dc offset, spectrum folding, motion interference, and range resolution * Covers Doppler radar physiological measurements demonstrated to date, from basic cardiopulmonary rate extractions to more involved volume assessments _Doppler Radar Physiological Sensing_ serves as a fundamental reference for radar, biomedical, and microwave engineers as well as healthcare professionals interested in remote physiological monitoring methods.
The Doppler radar detects all motion in the radar field of view, through detection of phase variations in the received signal. The challenge in physiological monitoring via Doppler radar is to effectively isolate the subject's random fidgeting physiological motion. The percentage of measurement interval containing significant motion may be used as a measure of subject rest/activity cycle, determining the degree of restlessness, for example, actigraphy. Phase demodulation provides the output proportional to chest displacement, and this information can be further analyzed to extract respiratory and heart rates, analyze the shape of respiratory signals, assess heart rate variability (HRV) parameters, and estimate displacement amplitude and related respiratory volume. The magnitude of received RF power can be analyzed to determine cardiopulmonary radar cross section (RCS) and further determine subject orientation. The variation of RCS with size and curvature of the target surface is the basis for detecting orientation of a human subject.
The development of Doppler radar for remote sensing of vital signs, with proof of concept demonstrated for various applications, could offer a platform for unobtrusive, noncontact, yet continuous physiological monitoring systems. Early identification of patient deterioration is important, as it can prevent subsequent cardiopulmonary arrest and reduce mortality. Assessment of cardiopulmonary functions is most often performed with contact sensors when direct access to the subject is available. Monitoring the cardiac state of burn victims can be challenging because it is sometimes difficult to find enough skin on which to apply an electrocardiogram (ECG) electrode. Cardiopulmonary activity is the main parameter used in the study of sleep disorders. Widespread use of microwave technology and digital processors in common household communications devices has driven down costs, making it possible to develop practical radar monitors that cost significantly less than conventional cardiopulmonary assessment instruments.
Respiratory, heart, and circulatory movements that can be detected without contact by Doppler radar are concentrated not only in the thorax, where the lungs and heart lie, but they also occur in the abdomen, which moves during respiration, and at other points on the body where superficial pulses are present. This chapter first describes the motion associated with breathing and how this motion affects the skin surface motion. It then discusses the location and anatomy of the heart, the electrical and mechanical events that cause contraction, the motion of the heart during contraction, and how that motion affects chest wall motion. The chapter also describes the location and structure of the arteries and veins, how they distend as the blood pressure varies during the cardiac cycle, and how this distension affects the skin surface motion. Doppler radar measurement of heart and respiration is a measurement of surface motion.
This chapter discusses advance performance architectures that overcome issues of DC offset, spectrum folding, motion interference, and range detection. It describes three different approaches to overcome DC offset and spectrum folding include single???channel homodyne system with phase tuning, heterodyne system with frequency tuning and low???intermediate frequency (IF) architecture. Due to extremely small physical motions of human chest during respiration, the Doppler radar system for physiological monitoring has to be very sensitive to phase changes, which are caused by path length variations. A fundamental limitation of continuous???wave (CW) radar is the inability to discriminate range to target. Either frequency???modulated continuous???wave (FMCW) or ultra???wideband (UWB) radar can be used to detect both range to target, and target micro???Doppler behavior. The chapter also describes a UWB impulse radar that can provide high???resolution range profiles, as well as micro???Doppler detection capability.
Continuous???wave (CW) homodyne radar has been the most commonly used architecture for physiological monitoring, due to its ease of implementation. This chapter shows the simplified block diagram of a physiological radar, indicating radio frequency (RF) front???end, baseband, and signal processing modules. It examines specific challenges related to each of those modules. The chapter describes the single???channel system limitations. Since a quadrature receiver system and the two orthonormal output signals enable to measure the relative phase information accurately, it is used in various applications, including digital communications and Doppler radar. The chapter also describes arctangent demodulation with DC offset compensation to combine quadrature outputs. It presents relevant quadrature receiver theory and arctangent demodulation with center tracking DC compensation method. Experimental results demonstrating that center tracking is suitable for demodulation of small and large displacement are presented.
This document organizes and standardizes the terms and definitions used in the field of ultrawideband (UWB) radar.
This document organizes and standardizes the terms and definitions used in the field of ultrawideband(UWB) radar.
Radar systems operate in frequency bands that since World War II have been identified by letter designations. To recognize and preserve accepted usage, the proposed revision would re-affirm the letter designations for radar, revising the current standard to update it regarding current International Telecommunication Union (ITU) radar band allocations and comments. No change in scope from the current standard is ...
This standard is devoted to providing radar definitions. The standard includes terms formerly found in IEEE Std 172-1971, with the exception of a few terms that are common in both fields, and new and updated terms. IEEE Std 172-1983 was withdrawn in 1983. As radar technology and literature evolve, new terms will be added and obsolete terms deleted.