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New Opportunities in 2007

IEEE INDUSTRIAL ELECTRONICS MAGAZINE 2007年第1期1卷 3-3页

作者： Einolf, Charles W., Jr. State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Beijing China

Presents the President's message for this issue of the publication.

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Suborbital flight test of a prototype terrain-relative navigation system

Suborbital flight test of a prototype terrain-relative navig...

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2007 AIAA InfoTech at Aerospace Conference

作者： Seybold, Calina Chen, George Bellutta, Paolo Johnson, Andrew Matthies, Larry Thurman, Sam Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 United States System Engineering Section M/S 233-201 4800 Oak Grove Drive United States AIAA United States EDL Systems and Advanced Technologies Group System Engineering Section M/S 301-490 Mobility and Robotic Systems Section M/S 198-235 United States Computer Vision Group Mobility and Robotics Systems Section M/S 198-235 United States Autonomous Systems Division M/S 198-105

ISBN: (纸本)1563478935

In April 2006, a terrain-relative navigation experiment successfully flew on a sounding rocket mission at White Sands Missile Range. The mission was designated by NASA/Wallops Flight Facility as 41.068 NT/Seybold ("41.068") and was flown as part of the New Millennium Program ST9 Terrain-Relative Guidance System (TRGS) Project's competitive Phase A effort. The TRN experiment had two objectives: 1) To demonstrate the viability of a navigation filter for precision landing that uses on-board IMU and descent image data to achieve position knowledge errors of less than 100m, validated with GPS data recorded during flight;and 2) To establish that commercial off-the-shelf cameras can be packaged sufficiently well to survive the sounding rocket launch environment. Both objectives were met. The 13 min flight provided a data set that was processed post-flight through the prototype algorithms to bring the ST9 TRGS Project to a technology readiness level of 4 in TRN. This paper describes the flight system development and operations of the TRN experiment on 41.068.

关键词： Flight control systems

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Modeling of Light Propagation through Biological Tissues: A Novel Approach

Modeling of Light Propagation through Biological Tissues: A ...

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Frontiers in the Convergence of Bioscience and Information Technologies, FBIT

作者： Chintha C. Handapangoda Malin Premaratne Leslie Yeo James Friend Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia Micro/Nanophysics Research Laboratory (MNRL) Department of Mechanical Engineering Monash University Clayton VIC Australia

An efficient numerical technique for modeling biological tissues using the radiative transfer equation is presented. Time dependence of the transient radiative transfer equation is approximated using Laguerre expansion. Azimuthal angle is discretized using the discrete ordinates method and the resulting set of ordinary differential equations is solved using the Runge-Kutta-Felhberg method.

关键词： Biological system modeling Optical propagation Biological tissues Equations Biology computing Laboratories Numerical models Azimuthal angle Optical scattering Cancer detection

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Simultaneous estimation of optical flow and object state: A modified approach to optical flow calculation

Simultaneous estimation of optical flow and object state: A ...

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IEEE International Conference on Networking, Sensing and Control

作者： Pubudu N Pathirana Allan E.K. Lim John Carminati Malin Premaratne School of Engineering and Information Technology Deakin University Geelong Australia Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Monash University Clayton VIC Australia

Differential optical flow methods are widely used within the computer vision community. They are classified as being either local, as in the Lucas-Kanade method, or global, as in the Horn-Schunck technique. As the physical dynamics of an object is inherently coupled into the behavior of its image in the video stream, in this paper, we use such dynamic parameter information in calculating optical flow when tracking a moving object using a video stream. Indeed, we use a modified error function in the minimization that contains physical parameter information. Further, the refined estimates of optical flow is used for better estimation of the physical parameters of the object in the simultaneous estimation of optical flow and object state(SEOS).

关键词： Image motion analysis State estimation Optical sensors Optical filters Optical noise Parameter estimation Nonlinear optics Streaming media Optical fiber networks computer vision

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Issues and Approaches for Navigation Using Signals of Opportunity

Issues and Approaches for Navigation Using Signals of Opport...

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2007 National Technical Meeting of the Institute-of-Navigation

作者： Raquet, John F. Miller, Mikel M. Nguyen, Thao Q. Air Force Institute of Technology Air Force Research Laboratory United States Department of Electrical Engineering Air Force Institute of Technology Advanced Navigation Technology (ANT) Center Reference Systems Branch Sensors Directorate Air Force Research Laboratory WPAFB OH United States Department of EE AFIT Miami University of Ohio United States ION RTN IEEE AIAA United States Electrical and Computer Engineering Department Air Force Institute of Technology (AFIT) Wright-Patterson AFB OH United States

There are many situations in which GPS is either unable to provide the desired level of accuracy or is unavailable, particular in urban or indoor environments. One alternative to GPS is to navigate using signals of opportunity (SoOP)-signals that are intended for purposes other than navigation. This paper describes the benefits and drawbacks of navigation using SoOP and identifies typical SoOP system configurations. Three different types of SoOP measurements are described, including ranging through signal strength, angle of arrival, and time-difference of arrival (TDOA) measurements. Positioning algorithms, ambiguity resolution issues, and measurement quality and geometry are also addressed.

关键词： Navigation

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Fingerprint Watermarking for H.264 Streaming Media

Fingerprint Watermarking for H.264 Streaming Media

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Frontiers in the Convergence of Bioscience and Information Technologies, FBIT

作者： Sooyeun Jung Dongeun Lee Seongwon Lee Joonki Paik Image Processing and Intelligent Systems Laboratory Department of Image Engineering Graduate School of Advanced Imaging Science Multimedia and Film Chung-Ang University Seoul South Korea Department of Computer Engineering Kwangwoon University Seoul South Korea

In this paper we propose a method that identifies users at H.264 streaming using watermarking with fingerprints. The watermark can efficiently reduce the potential danger of forgery or alteration. Especially a biometric watermark has various advantages. Among entire biometric characteristics, the fingerprint is the most convenient and economical. In this paper we propose a novel fingerprint-based watermarking technique that can survive under very low bit-rate compression. The proposed algorithm consists of enhancement of a fingerprint image, watermark insertion using discrete wavelet transform. In this paper we also analyze H.264 compression pattern and its effects on watermarking. After restoring the damaged watermark sequence using various filters, the algorithm extracts the embedded watermark. The proposed algorithm can achieve robust watermark extraction against H.264 compressed videos.

关键词： Fingerprint recognition Watermarking Streaming media Image coding Biometrics Discrete wavelet transforms Forgery Image matching Pattern analysis Image restoration

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Novel Architecture for Reconfigurable Optical Add-Drop Multiplexer Using Single Arrayed Waveguide Grating

Novel Architecture for Reconfigurable Optical Add-Drop Multi...

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The Joint International Conference on Optical Internet and Next Generation Network (COIN-NGNCON)

作者： Kwanil Lee Sang Bae Lee Sil-Gu Mun Chang Hee Lee Phonics Research Laboratory Intelligent Systems Division Korea Institute of Science and Technology Seoul South Korea Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon South Korea

A novel optical add-drop multiplexer using arrayed waveguide grating is proposed for optical transport networks. By use of circulators in the coupled fold-back paths between demultiplexed channels, we improve the loss... 详细信息

关键词： Arrayed waveguide gratings Optical arrays Optical waveguides Optical add-drop multiplexers Optical crosstalk Optical signal processing Optical films Optical filters Circulators Wavelength division multiplexing

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Indium phosphide nanowire photoconductors on non-single crystalline silicon-based platform

Indium phosphide nanowire photoconductors on non-single crys...

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2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007

作者： Kobayashi, Nobuhiko P. Logeeswaran, V.J. Li, Xuema Islam, M. Saif Straznicky, Joseph Wang, Shih-Yuan Li, Zhiyong Stanley Williams, R. Baskin School of Engineering University of California Santa Cruz Santa Cruz CA 95064 United States Advanced Studies Laboratories Univ. of California Santa Cruz United States NASA Ames Research Center Moffett Field CA 94035 United States Information and Quantum Systems Laboratory Hewlett-Packard Laboratories Palo Alto CA 94304 United States Department of Electrical and Computer Engineering University of California Davis Davis CA 95616 United States

ISBN: (纸本)1424406080

We describe the fabrication and characterization of photoconductors in which an ensemble of indium phosphide nanoneedles was utilized. DC electrical transport properties of the fabricated photoconductors were characterized under illumination with monochromatic light at 633 nm. This is the first demonstration of III-V compound semiconductor nanometer-scale structures monolithically integrated on non-single crystalline silicon-based materials as an optoelectronic device that can be fabricated by a simple and flexible process not limited by single crystal substrates. © 2007 IEEE.

关键词： Nanowires

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Teleoperation System of the Internet-based Omnidirectional Mobile Robot with A Mounted Manipulator

Teleoperation System of the Internet-based Omnidirectional M...

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IEEE International Conference on Mechatronics and Automation

作者： Dawei Wang Jianqiang Yi Dongbin Zhao Guosheng Yang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy and Sciences Beijing China Institute of Advanced Control and Intelligent Information Processing College of Computer and Informaion Engineering Henan University Kaifeng China

A platform of the Internet-based teleoperation system with an omni-directional mobile robot which has a five DOFs robot arm is constructed. Remote control of the robot through the Internet is implemented. The system is featured as low-cost and user interface friendly: remote users can control the robot through the Internet just by a client program in a general computer. The client computer can receive the live video and environment information measured by sensors. With the help of the remote video and the local simulation, users can easily communicate with the robot. Different modules are proposed and the implementation method of the system is presented. Related experiments are conducted to test the validity of the proposed system.

关键词： Internet Mobile robots Manipulators Robot sensing systems Robot control User interfaces Control systems computer interfaces Computational modeling System testing

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A low-temperature-grown oxide diode as a new switch element for high-density, nonvolatile memories

A low-temperature-grown oxide diode as a new switch element ...

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作者： Lee, Myoung-Jae Seo, Sunae Kim, Dong-Chirl Ahn, Seung-Eon Seo, David H. Yoo, In-Kyeong Baek, In-Gyu Kim, Dong-Sik Byun, Ik-Su Kim, Soo-Hong Hwang, In-Rok Kim, Jin-Soo Jeon, Sang-Ho Park, Bae Ho Nano Devices Laboratory Samsung Advanced Institute of Technology Suwon 440-600 Korea Republic of Department of Physics Konkuk University Seoul 143-701 Korea Republic of Process Development Team Semiconductor R and D Center Samsung Electronics Company Ltd. Suwon 440-600 Korea Republic of Department of Computer Systems and Engineering Ihha Technical College Incheon 402-753 Korea Republic of

A working nonvolatile resistance memory cell with an oxide p-n diode is fabricated from p-type NiOx and n-type TiOx films grown at low temperatures. A p-n diode si a fundamental circuit element for thin-film electronics, which is fabricated by epitaxial silicon. Oxide based p-n diodes are good candidates to provide solutions to the issues associated with Si-based diodes. The resistance of a Pt/NiO/Pt resistor structure changes with the oxygen content in an argon-oxygen gas mixture, in which the oxygen content is varied from 1 to 30% during deposition of the NiO layer by a reactive sputtering method. This diode structure provides a high rectifying ratio of 105 at ±3 V, useful for various applications including high-density nonvolatile memories with 3D stackable cross-point structures.

关键词： Diodes

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