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

共 5986 条记录，以下是4911-4920 订阅

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Review of airport surface movement radar technology

Review of airport surface movement radar technology

引用

IEEE National conference on radar

作者： E. Perl Air Traffic Systems Sensis Corporation East Syracuse NY USA

Runway incursion is defined by the FAA as "any occurrence at an airport involving an aircraft, vehicle, person or object on the ground that creates collision hazard or results in a loss of separation with an aircraft taking off, intending to take off, landing or intending to land." A summary of how severe this problem is can be found in a 2001 hearing before the Subcommittee on Aviation. Surface Movement radar (SMR) technology has evolved over the years as part of an effort to mitigate runway incursion risks and enhance airport capacity. Surface movement surveillance systems of various types have been installed in major airport as early as the 60s, and have kept evolving. The most recent system currently being deployed in the US by the FAA is the Airport Surface Movement Detection Equipment Model X (ASDE-X) system. In this system, unlike previous systems, the surface movement radar is just one of several sensors that are used in addition to transponder multilateration and GPS-based position reports, referred to as Automatic Dependent Surveillance Broadcast or ADS-B; however, the SMR is a key subsystem. This paper contains an overview of the state of the art SMR technology. The paper provides an introduction on the use of radar technology for this commercial application. It focuses on the architecture, characteristics and technology of the radar sensor, the characteristics of the clutter and how it affects the performance, effects of multipath, automatic detection and comparison of several sensor architectures. Sensis Corporation has recently completed the testing of a new, improved SMR, which is now part of ASDE-X system. The paper summarizes the main features of this radar.

关键词： Airports FAA Aircraft Surveillance radar detection Variable speed drives sensor phenomena and characterization Land vehicles Road vehicles Hazards

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Towards radar-enabled sensor networks

Towards radar-enabled sensor networks

引用

International Symposium on Information Processing in sensor Networks (IPSN)

作者： P.K. Dutta A.K. Arora S.B. Bibyk EECS. Department University of California Berkeley Berkeley CA USA CSE. Department Ohio State Uinversity Columbus OH USA ECE. Department Ohio State Uinversity Columbus OH USA

Ultra wideband radar-enabled wireless sensor networks have the potential to address key detection and classification requirements common to many surveillance and tracking applications. However, traditional radar signal processing techniques are mismatched with the limited computational and storage resources available on typical sensor nodes. The mismatch is exacerbated in noisy, cluttered environments or when the signals have corrupted spectra. To explore the compatibility of ultra wideband radar and mote-class sensor nodes, we designed and built a new platform called the radar mote. An early prototype of this platform was used to detect, classify, and track people and vehicles moving through an outdoor sensor network deployment. This paper describes the sensor's theory of operation, discusses the design and implementation of the radar mote, and presents sample signal waveforms of people, vehicles, noise, and clutter. We demonstrate that radar sensors can be successfully integrated with mote-class devices and imbue them with an extraordinarily useful sensing modality

关键词： radar detection radar tracking Ultra wideband radar Vehicles Ultra wideband technology Wireless sensor networks Surveillance radar signal processing Working environment noise Prototypes

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Wireless Communication Engineering Student Research Group "WiComm Yuniors"

Wireless Communication Engineering Student Research Group "W...

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International conference on Microwaves, radar and Wireless Communications

作者： Marek Zmuda Lukasz Kulas Department of Electronics Telecommunications and Informatics Gdansk University of Technology Gdansk Poland

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How infrasonic imaging, HF-surface radar & HF-OTHR and GPS technology can favorably be implemented for detecting the on-set of Tsunamis and the real-time imaging of its spreading

How infrasonic imaging, HF-surface radar & HF-OTHR and GPS t...

引用

16th International conference on Microwaves, radar and Wireless Communications, MIKON 2006

作者： Boerner, Wolfgang-Martin W-4210 M/C 154 900 W. Taylor St. Chicago IL 60607-7018 United States

ISBN: (纸本)9788390666280

Worldwide, medium to short term tsunami prediction is becoming ever more essential for safeguarding man due to an un-abating population increase within low-lying coastal regions of all of the affected oceans. But hitherto there have been no verifiable methods of reliable tsunami prediction developed - except for a few isolated examples of placing arrays of costly short-lived sensors along the ocean bottom requiring monthly re-calibration efforts. This dilemma is a result of not yet having identified the proper approaches to tsunami prediction. The question on whether there do exist reliable prediction methods was answered long ago by fauna living within the coastal littoral zone that is affected by tsunamis. Especially during the last devastating "Boxing Day 050426 Tsunami" caused by the Sumatra-Andaman "Super-Earthquake" of M = 9.3 with epicenter near Simeulue Island, there were many verifiable episodes on how fish escaped the affected coastal region in time;the elephants, water-buffalos and other non-domesticated animals rushed for higher ground locations well in time before the tsunami crest and subsequent swells approached, and so on. These observations provide proof that some electromagnetic or, more likely, infrasonic local warning signatures are received by these creatures relatively long before the approaching tsunami strikes. We presume that the signatures could be infrasonic waves traveling at high speeds as under-water surface waves that could be detected by marine fauna as well as coastal animals and birds. Tsunamis have existed for millions of years and fauna of the affected coastal region has developed instinctive warning mechanisms that we need to explore. Another promising natural sensor may utilize electromagnetic precursor signatures that yet need to be fully discovered. Both, the role electromagnetic phenomena and the role infrasonic signatures will be scrutinized. The results of successful post-event model reconstructions of viable electromagneti

关键词： Tsunamis

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Microwave Saw Humidity sensor

Microwave Saw Humidity Sensor

引用

International conference on Microwaves, radar and Wireless Communications

作者： Adam Kawalec Mateusz Pasternak Military University of Technology Warsaw Poland

In this paper the microwave humidity sensor has been presented. In the device the surface acoustic waves (SAW) resonator with nafion coating was used. The sensor exhibits good sensitivity and linearity as well as the resistance to active chemical compounds. The microwave circuit presented in the paper seems to be also suitable with other chemical chemisensitive coatings for different type chemical compounds and biological agents detectors.

关键词： Humidity Microwave sensors Microwave devices Acoustic sensors Chemical compounds Chemical sensors Coatings Surface acoustic wave devices Surface resistance Acoustic waves

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A Compact 24 GHz sensor for Beam-Forming and Imaging

A Compact 24 GHz Sensor for Beam-Forming and Imaging

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International conference on Control, Automation, Robotics and Vision (ICARCV)

作者： Winfried Mayer Arnold Gronau Wolfgang Menzel Helmut Leier Department of Microwave Techniques Ulm University Ulm Germany Research and Technology DaimlerChrysler Aerospace Ulm Germany

A compact 24 GHz sensor setup for experimental verifications of radar imaging and digital beam-forming has been designed and realized. The sensor consists of a FM-CW radar front-end and a remote radar electronic unit. The front-end consists of a switched antenna array of 25 linearly arranged elements fed by one transmitter and two parallel homodyne receivers connected to separate receive antenna elements. The remote radar electronic unit includes the base-band signal generation, analog inputs for data acquisition and programmable digital circuitry for measurement control, data storage and interface handling. The sensor can be operated from a notebook computer via standard PC interfaces, thus forming a compact imaging radar system well suited for field tests. The sensor addresses primarily short and medium range automotive applications, but its flexibility in signal generation, sampling and coherent signal processing makes it interesting for many other application fields. In this article, a detailed description of the total system is given and exemplary signal processing methods for imaging and beam-forming are introduced and demonstrated with measurement results

关键词： Image sensors radar imaging radar antennas Receiving antennas Linear antenna arrays Signal generators radar signal processing Transmitters radar measurements Data acquisition

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Bio-Medical Sensing using Ultra Wideband Communications and radar technology: A Feasibility Study

Bio-Medical Sensing using Ultra Wideband Communications and ...

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International conference on Pervasive Computing Technologies for Healthcare, PervasiveHealth

作者： Carlos G. Bilich International Doctorate School University of Trento Italy

The aim of this work is to study the application of ultra wideband (UWB) technology to perform biomedical sensing and vital signs monitoring in humans. Among the numerous signals that can be measured, the heart rate (HR) is chosen as the first objective due to its importance. The research is pointed towards the development of a technique that can allow both, radar sensing and communications using the same UWB transceiver. Such a sensor, could use UWB radar principles to measure the heart beat rate and UWB communication standards to transmit these measurements. Readily available commercial transceivers with minor adaptations will be considered as possible to solve for the physical layer. Signal processing for target detection will be done at higher levels. Having sensors with such "duo" properties can make them ideal nodes for wearable computing, as well as sensor and body area networks

关键词： Ultra wideband communication Ultra wideband radar Communications technology Biomedical measurements Heart rate Transceivers Wearable sensors Ultra wideband technology Biomedical monitoring Humans

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5.8 GHz Vital Signal Sensing Doppler radar using Isolation-improved Branch-line Coupler

5.8 GHz Vital Signal Sensing Doppler radar using Isolation-i...

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European radar conference (EURAD)

作者： Sang-gyu Kim Hyun Kim Yongshik Lee Il-suek Kho Jong-gwan Yook Department of Electrical and Electronics Engineering Yonsei University Seoul South Korea Graduate School of Information Technology & Telecommunications Inha University Incheon South Korea

5.8 GHz Doppler radar which is wireless sensor to collect the respiration and heart rate using feed-forward type branch-line coupler is developed. Even though the wireless sensing systems using a circulator or branch-line coupler have been developed, these systems have low sensitivity because of low isolation and bulky system due to Tx/Rx two independent signal paths. In this paper, proposed Doppler radar has improved the isolation by using feedforward type branch-line coupler, which has -55 dB isolation between transmitter and receiver. As a result of achieving high isolation, irreversible vital signal due to the low isolation of conventional branch-line coupler can be detected. So, sensitivity of the system is increased drastically

关键词： Doppler radar Feedforward systems Wireless sensor networks Heart rate radar antennas Antenna feeds Microstrip Sampling methods Information technology Transmitters

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Application of Millimetre Wave radar sensor to Environment Mapping in Surface Mining

Application of Millimetre Wave Radar Sensor to Environment M...

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International conference on Control, Automation, Robotics and Vision (ICARCV)

作者： E. Widzyk-Capehart G. Brooker S. Scheding R. Hennessy A. Maclean C. Lobsey CRCMining University of Queensland QLD Australia ACFR The University of Sydney

This paper presents the application of a millimetre wave radar technology to environment mapping in surface mining. sensor requirements for ranging and surface profiling in shovel and dragline operations were determined based on machines performance requirements. Frequency modulated continuous wave (FMCW) technique was selected to achieve the correct range resolution while fast Fourier techniques (FFT) was used to extract the range data from the radar output. radar data processing was undertaken using stochastic environment representation technique in real-time. The results of field trials show successful radar performance in terms of the system's accurate measurement of excavation terrain, real-time imaging, robustness, reliability and penetration through dust and water

关键词： radar applications Surface waves radar imaging Millimeter wave technology Frequency modulation Data mining Data processing Stochastic processes radar measurements Real time systems

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Bias Estimation of Multiple radars by Quasi-Recursive Filtering

Bias Estimation of Multiple Radars by Quasi-Recursive Filter...

引用

IEEE India conference (INDICON)

作者： Kiran Chittella Tanushree Garai Siddhartha Mukhopadhyay Department of Electrical Engineering Indian Institute of Technology Kharagpur Kharagpur India

This paper presents a method for estimating bias in radar measurements used in tracking aerospace targets. The bias-free and less noisy radar measurement is critical as it would provide correct information of target kinematics which is a necessity of the guidance law to generate the tracking commands. In a typical interception scenario, multiple radars are employed to detect and track target kinematics. Bias estimation is often difficult because of limited observability of sensor biases as there may not be a unique set of biases that explains the relative errors between measurements. The sensors involved may be dissimilar, and their corresponding bias parameters may differ in magnitude and type. The various sources of biases are sensor bias, alignment error (tilt error), and radar position uncertainty. radar measurements are to be debiased and noise filtered effectively before they can be used singly or in conjunction with any onboard sensor for generating tracking commands. The formulation of bias estimator described here is designed for tracking systems, such as aircrafts, ships, with multiple sensors as radars, jam strobe detectors, GPS, ESM and wider variety of targets and sensors. The paper concisely states the algorithm which addresses the above mentioned problems and illustrates its performance capabilities through results obtained by applying it to a realistic ballistic target tracking scenario

关键词： radar tracking Target tracking radar measurements Noise generators Kinematics radar detection sensor phenomena and characterization sensor systems Filtering Observability

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