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

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Development of VHF CARABAS ii SAR

Development of VHF CARABAS II SAR

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conference on radar sensor technology

作者： Hellsten, H Ulander, LMH Gustavsson, A Larsson, B NATL DEF RES ESTAB S-58111 LINKOPINGSWEDEN

ISBN: (纸本)0819421286

There is an increasing interest in imaging radar systems operating at low frequencies. Examples of military and civilian applications are detection of stealth-designed man- made objects, targets hidden under foliage, biomass estimation, and penetration into glaciers or ground. The developed CARABAS technology is a contribution to this field of low frequency SAR imagery. The used wavelengths offer a potential of penetration below the upper scattering layer in combination with high spatial resolution. The first prototype of the system (CARABAS I) has been tested in environments ranging from rain forests to deserts, collecting a considerably amount of data often in parallel with other SAR sensors. The work on data analysis proceeds and results obtained so far seem promising, especially for application in forested regions. The experiences gained are used in the development of a new upgraded system (CARABAS ii), which is near completion and initial airborne radar tests for system verifications followed by some major field campaign are scheduled to take place during 1996. This paper will summarize the CARABAS I system characteristics and system performance evaluation. The major imperfections discovered in the radar functioning will be identified, and we explain some of the modification made in the system design for CARABAS ii. A new algorithm for future real-time CARABAS data processing has been derived, with a structure well-suited for a multi-processor environment. Motion compensation and radio frequency interference mitigation are both included in this scheme. Some comments on low frequency SAR operation at UHF-based versus VHF-band will be given.

关键词： VHF radar low frequency SAR ultra-wideband foliage penetration ground penetration wideband dipole backprojection radio frequency interference stealth countermeasures

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Data fusion concepts applied to a suite of dissimilar sensors

Data fusion concepts applied to a suite of dissimilar sensor...

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1996 Canadian conference on Electrical and Computer Engineering - Glimpse into the 21st-Century

作者： Bosse, E Roy, J Grenier, D DEF RES ESTAB VALCARTIER DECIS SUPPORT SECTCOURCELETTEPQ G0A 1R0CANADA

ISBN: (纸本)0780331435

This paper presents a discussion on the feasibility and usefulness of data fusion applied to a suite of dissimilar sensors. This suite comprises surveillance radar, forward looking infrared (FLIR), electronic support measurement (ESM), a synthetic aperture radar (SAR), acoustic sensors and a data link (LINK 11). An analysis of applicable sensor fusion processes is presented followed by a discussion on the expected performance improvements. Finally, a three step incremental approach is proposed with recoverable steps where different level of fusion sophistication can be implemented based on the availability of the technology and the actual status of the sensors.

关键词： sensor data fusion

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WaveTune: Harnessing radar sensors to Compose Music Beats with Body Gestures 20

WaveTune: Harnessing Radar Sensors to Compose Music Beats wi...

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20th Annual International conference on Distributed Computing in Smart sensor Systems and the Internet of Things (DCOSS-IoT)

作者： Juneja, Suchdeep Singh Vaidyet, Girish Zuniga, Marco Delft Univ Technol Delft Netherlands Amsterdam Inst Adv Metropolitan Solut Amsterdam Netherlands

ISBN: (纸本)9798350369458;9798350369441

In the field of music technology, the ability to connect body movements with music generation has led to highly engaging applications. Many existing solutions use cameras or wearable devices to capture physical movements and translate them into commands for a music generation tool. While the camera-based systems are privacy-invasive and demand good lighting conditions, the wearable devices adversely impact the fluidity of movements. We propose WaveTune, a privacy-friendly and device-free interface for creating music beats through body gestures. Wavetune has the following components: (i) a millimeter-wave radar as the frontend sensor that captures body movements, (ii) a gesture recognition algorithm that performs gesture delimitation and identification in real-time, and (iii) a music generation component that maintains a seamless and pleasant experience. WaveTune also provides an option to continuously map random dynamic movements into musical parameters to encourage further interaction. We recruited 24 users to train and test WaveTune's ability to map body gestures to musical commands. To the best of our knowledge, WaveTune is the first mmWave system that allows a layered composition of music beats.

关键词： Gesture Recognition Machine Learning Millimeter-Wave radar mmwave music Music Generation Music technology Privacy-Friendly Interface Tesla Rapture

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Long range detection using a PDR sensor combined with MIMO antenna

Long range detection using a PDR sensor combined with MIMO a...

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2010 International conference on Information and Communication technology Convergence, ICTC 2010

作者： Kim, Young-Man Oh, Jung-Hun Vu, Anh-Duy Kim, Jin-Won Jeon, Jun-Soo Lee, Seung-Min Han, Jea-ii School of Computer Science Kookmin University Korea Republic of School of Electronic Engineer Kookmin University Korea Republic of NIPA Korea Republic of

ISBN: (纸本)9781424498062

The Pulse-Doppler radar (PDR) is a radar system capable of not only detecting the location of a fixed object, but also measuring its radial velocity by using the Doppler Effect. Taking these abilities, in this paper, we introduce a new PDR sensor which is combined with a Multiple-Input-and-Multiple- Output (MIMO) antenna system in order to enhance the detection range up to 120m. In the experiments at Kookmin University, the proposed sensor performed well to detect moving car at distance 130m - further than we had expected. © 2010 IEEE.

关键词： Doppler effect

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Advances in ground penetrating radar for road subsurface measurements

Advances in ground penetrating radar for road subsurface mea...

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conference on radar sensor technology ii

作者： Kurtz, JL Fisher, JW Skau, G Armaghani, J Moxley, JG Univ. of Florida (United States) State of Florida Dept. of Transportation (United States)

ISBN: (纸本)0819424811

Ground penetrating radar (GPR) is becoming an increasingly useful tool for road subsurface characterization. The Florida Department of Transportation (FDOT) has recently obtained a new 1 GHz ground penetrating radar with the ability to make high resolution measurements. Depth profile scan rates of the new radar are about 50 scan/sec and the radar operates on a test van travelling at speeds up to 50-55 MPH. The time domain data collected by the GPR allow the determination of thickness of the road surface and subsurface layers and, with appropriate signal processing, the data can provide information about voids and other anomalies within road layer interfaces. This paper will describe the salient features of the Florida DOT ground penetrating radar, recent measurement results, and applications of GPR for road assessments. It will also describe preliminary results of a University of Florida project which is employing advanced signal processing techniques to detect and classify subsurface anomalies in road layers. As a precursor to anomaly detection we are developing improved techniques for Finding road layer thicknesses and dielectric constants, The processing techniques being developed include matched filter and slope detection algorithms. A goal of the current work is to develop signal processing techniques that will allow FDOT to evaluate subsurface conditions for large sections of roads throughout Florida in a more accurate and rapid manner. It is expected that the GPR and the results of current research will assist the FDOT in more accurately determining road layer thickness profiles, in assessing road subsurface conditions with less coring, and aid in rehabilitating roads with less manpower than is now required, Such capabilities will allow potentially serious problems to be corrected before they become costly and will also provide a useful tool for future road design and improvement.

关键词： ground penetrating radar matched filters detect classify

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A polarimetric 76 GHz radar-sensor for automotive applications

A polarimetric 76 GHz radar-sensor for automotive applicatio...

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27th European Microwave conference and Exhibition- Bridging the Gap Between Industry and Academia (EuMC 97)

作者： Wenger, J Stotz, M Barth, H Neef, H Wanielik, G Schneider, R Daimler-Benz Research Center D-89081 Ulm Wilhelm-Runge-Str. 11 Germany TH Darmstadt Institut für Hochfrequenztechnik D-64283 Darmstadt Merckstr. 25 Germany Daimler-Benz Aerospace AG D-89077 Ulm Wörthstr. 85 Germany

There is an increasing interest in millimeter-wave radar sensors for automotive applications, passenger-comfort traffic-safety will be the main distinctive feature for car manufacturers in markets. radar systems at millimeter-wave frequencies allow small antennas with high resolution well into the front of a passenger car. Over and above radar sensors for automotive applications autonomous intelligent cruise control and collision avoidance radar open up a relevant volume market millimeter-wave technology. In this paper the concept of an automotive imaging radar will be The sensor is a fully polarimetric, coherent 76 GHz radar having an electronically obtained resolution based on a focal plane array concept. Using advanced GaAs-based circuits all the blocks necessary for the realization of the radar have been designed, assembled, and tested. the modules and the obtained results as well as the integration of the complete radar sensor will described. A sequence of radar images of traffic scenarios has been measured and processed with developed algorithms.

关键词： iiI-V semiconductors

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radar applications overview

Radar applications overview

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conference on radar sensor technology

作者： Greenspan, M NORTHROP GRUMMAN NORDEN SYST NORWALK CT 06856 USA

ISBN: (纸本)0819421286

During the fifty years since its initial development as a means of providing early warning of airborne attacks against allied countries during World War ii, radar systems have developed to the point of being highly mobile and versatile systems capable of supporting a wide variety of remote sensing applications. Instead of being tied to stationary land-based sites, radar systems have found their way into highly mobile land vehicles as well as into aircraft, missiles, and ships of all sizes. Of all these applications, however, the most exciting revolution has occurred in the airborne platform arena where advanced technology radars can be found in all shapes and sizes...ranging from the large AWACS and Joint STARS long range surveillance and targeting systems to small millimeter wave multi-spectral sensors on smart weapons that can detect and identify their targets through the use of highly sophisticated digital signal processing hardware and software. This paper presents an overview of these radar applications with the emphasis on modern airborne sensors that span the RF spectrum. It will identify and describe the factors that influence the parameters of low frequency and ultra wide band radars designed to penetrate ground and dense foliage environments and locate within them buried mines, enemy armor, and other concealed or camouflaged weapons of war. It will similarly examine the factors that lead to the development of airborne radar systems that support long range extended endurance airborne surveillance platforms designed to detect and precision-located both small high speed airborne threats as well as highly mobile time critical moving and stationary surface vehicles. The mission needs and associated radar design impacts will be contrasted with those of radar systems designed for high maneuverability rapid acquisition tactical strike warfare platforms, and shorter range cued air-to-surface weapons with integral smart radar sensors.

关键词： applications history overview radar technology

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Approaching 80 years of passive radar

Approaching 80 years of passive radar

引用

2013 International conference on radar - Beyond Orthodoxy: New Paradigms in radar, radar 2013

作者： Kuschel, H. Fraunhofer-Institute for High Frequency Physics and Radar Techniques FHR Department of Passive Sensor Systems and Classification PSK Fraunhofer Str. 20 D-53343 Wachtberg Germany

ISBN: (纸本)9781467351775

The history of passive radar dates back to the early days of radar in 1935 when the Daventry experiment was conducted in the UK. It continues in WW ii with the German Klein Heidelberg passive radar and receives new interest today, as passive covert radar (PCR) systems like Silent Sentry, Homeland Alerter 100, Aulos and PARADE are ready for operation. The future of PCR will strongly depend on the availability of transmitters of opportunity such as FM-radio and digital broadcast networks. © 2013 IEEE.

关键词： Digital radio

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On a New Seeker Gimbal

On a New Seeker Gimbal

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conference on radar sensor technology XIV

作者： Rosheim, Mark Sauter, Gerald Ross Hime Designs Inc Minneapolis MN USA

ISBN: (纸本)9780819481337

Ross-Hime Designs, Inc. presents the results of its research and development of "Low Cost Light-Weight Seeker Gimbals." The Super Seeker, a patent-pending gimbal design, offers a swiveling yoke design lower in cost than current gimbal designs and weighing significantly less than traditional gimbal systems while enabling a doubling of the sensor's surface area. The swiveling yoke design has built-in shock and vibration isolation by virtue of a bulk-head mounted design that promises to be more rugged than all of its predecessors. A prototype electronic controller and software to drive the wrist for testing purposes was developed. Tests confirmed the Seeker met the repeatability and tracking requirements in all but the first repeat, where the offset was less than 2 mrad. We are continuing to investigate this anomaly. All other repeats had errors less than 1 mrad. The environmental vibration and classic functional shock test results showed that the Super Seeker meets the requirements of the Phase ii Environmental Vibration and Shock Test Requirements of the missile contract. Anticipated benefits: The Super Seeker will prove widely adaptable to multiple applications including sensor pointing for missiles, aircraft, and ships. Commercial applications include antenna pointing on any moving platform including pleasure craft, RV's and private planes.

关键词： Gimbals gimbal joint seeker robot pointer seeker gimbals radar lidar seeker gimbal

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Antenna Array Devised for Amplifier Integration

Antenna Array Devised for Amplifier Integration

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conference on radar sensor technology XVI

作者： Strassner, Bernd H., ii Sandia Natl Labs Albuquerque NM 87185 USA

ISBN: (纸本)9780819490391

This presentation describes an active antenna array architecture designed specifically for achieving low transmit and receive sidelobe levels without having to use attenuators to create the necessary aperture taper. An "irregular" subarray approach is used to eliminate the need for tapered-attenuation within the array's aperture, thereby drastically reducing the DC supply power consumption of the active phased array. On many UAVs, especially the smaller models, onboard DC power can be extremely limited. The so-called "irregular" subarray approach not only determines the exact locations of the T/R modules, but it also allows for all of the low-noise amplifiers to share the same part number and for all of the power amplifiers to also share the same part number. All of the LNAs are biased exactly in the same manner as are all of the PAs. By keeping the part numbers and bias conditions of the amplifiers the same, large instantaneous operational bandwidths can be obtained. Thus, this paper illustrates an active antenna array topology that can achieve wideband performance and low sidelobe levels with minimal DC power consumption.

关键词： Active Antenna Array Antenna Array Aperture Taper Low Sidelobes T/R Module

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