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检索条件"任意字段=Conference on Signal and Data Processing of Small Targets 2010"

共 976 条记录，以下是371-380 订阅

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Study on adaptive monopulse with reduced dimension stap technique

Study on adaptive monopulse with reduced dimension stap tech...

引用

2nd International conference on Image Analysis and signal processing, IASP'2010

作者： Wu, Renbiao Wang, Lu Su, Zhigang Tianjin Key Laboratory for Advanced Signal Processing Civil Aviation University of China Tianjin China

ISBN: (纸本)9781424455553

For airborne radar, the estimation performance of moving target parameters is greatly affected by the residuals of ground clutter after space-time adaptive processing (STAP). The non-homogeneity of environment, which results in the lack of available secondary data, will make this problem worse. In this paper, a novel method, which utilizes small amount of secondary data, is proposed for getting more accurate estimation under non-homogenous environment. In this method, the spatial and temporal dimensions are reduced properly for the benefit of low secondary data support and exact clutter covariance matrix estimation;additionally, by combining a STAP processor with monopulse technique, target parameters will be obtained. The simulation results are shown this method is more accurate and adaptable than the previous adaptive monopulse with STAP method under the non-homogeneous environment. ©2010 IEEE.

关键词： Space time adaptive processing

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The motion trajectory restoring for radar observation of living objects

The motion trajectory restoring for radar observation of liv...

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International conference on Ultrawideband and Ultrashort Impulse signals

作者： Ochotnikov, D.A. Russia Moscow Aviation Institute Russia

ISBN: (纸本)9781424474684

Some technologies of medical radars design are discussed in the report. Radars are intended to obtain the mechanical moving trajectory of living organism chest. Peculiarities of radar detection of targets performing seesaw motion are considered. data obtaining and processing problems are investigated, methods of initial object motion trajectory restoring are examined by means of two quadratures use, constant component elimination and arctan-demodulation. Methods of received signal processing and computing are proposed. © 2010 IEEE.

关键词： data handling

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Compressed nonnegative sparse coding

Compressed nonnegative sparse coding

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10th IEEE International conference on data Mining, ICDM 2010

作者： Wang, Fei Li, Ping Department of Statistical Science Cornell University Ithaca NY 14853 United States

ISBN: (纸本)9780769542560

Sparse Coding (SC), which models the data vectors as sparse linear combinations over basis vectors, has been widely applied in machine learning, signal processing and neu-roscience. In this paper, we propose a dual random projection method to provide an efficient solution to Nonnegative Sparse Coding (NSC) using small memory. Experiments on real world data demonstrate the effectiveness of the proposed method. © 2010 IEEE.

关键词： signal processing

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A novel ISAR alogrithm for the imaging of ship targets based on AM-LFM model

A novel ISAR alogrithm for the imaging of ship targets based...

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International conference on signal processing Proceedings (ICSP)

作者： Zhang, Long Si, Dong Sen College of Electronics and Information Xi'an Polytechnic University Xi'an China Institute of Computer Architecture and Networks Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9781424458981

Rang-Instaneous-Doppler (RID) processing is widely used in ISAR imaging of maneuvering target and acceptable image can be achieved when the amplitude modulation effect of scatterers echoes can be neglected during intergation time, whereas, the RID method based on the assumption above does not work properly when the variant amplitude modulation of scatterers' echoes involved, such as ship target. In this paper, a multicomponent amplitude modulation and linear frequency modulation(AM-LFM) signal model developed and a fast parameter estimation technique-DechirpClean method *** achieve the best quality in DechirpClean ISAR image, a new effective optimum imaging interval selection scheme addressed. The performance of proposed method is verified by comparing the result with the image produced by conventional RID method from the real data processing. © 2010 IEEE.

关键词： Amplitude modulation

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Geospatial Feature Based Automatic Target Recognition (ATR) Using data Models

Geospatial Feature Based Automatic Target Recognition (ATR) ...

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conference on signal processing, Sensor Fusion, and Target Recognition XIX

作者： Jaenisch, Holger Handley, James Albritton, Nathaniel Koegler, John Murray, Steven Maddox, Willie Moren, Stephen Alexander, Tom Fieselman, William Caspers, Robert Amtec Corp Huntsville AL 35816 USA

ISBN: (纸本)9780819481610

We present a method for deriving an automatic target recognition (ATR) system using geospatial features and a data Model populated decision architecture in the form of a self-organizing knowledge base. The goal is to derive an ATR that recognizes targets it has seen before while minimizing false alarms (zero false alarms). We present an investigation of the performance of analytical data Models as a sensor and data fusion process for automatic target recognition (ATR), and summarize results including on a 2 km background run where no false alarms were encountered.

关键词： data Modeling change detection zero false alarms Improvised Explosive Device (IED) phased array radar self-organization knowledge base ATR ORTHON JIEDDO

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Alternative means for conductor based short distance signal/data transfer

Alternative means for conductor based short distance signal/...

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2010 International conference on signal processing and Communications, SPCOM 2010

作者： Omprakash, S.N. Sripathi Snpati, U. Shankaranarayana Bhat, M. Department of Electronics and Communication National Institute of Technology Karnataka Surathkal DK India

ISBN: (纸本)9781424471362

This paper provides an alternative solution/means for conductor based communication system, specifically on a printed circuit board where multiple IC packages are selectively connected to each other through conductor strips to establish a desired product from number of common integrated circuits. Further, in this paper we also discuss the effect of interference due to implementation of large number of transceivers within a small area typically over a PCB or within a close proximity. © 2010 IEEE.

关键词： Printed circuit boards

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Theory of the optimum running approximation of extended filter banks with slightly non-linear analysis filters

Theory of the optimum running approximation of extended filt...

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conference on Mathematics of data/Image Coding, Compression, and Encryption with Applications XII

作者： Kida, Yuichi Kida, Takuro Ohu Univ Sch Pharmaceut Sci Koriyama Fukushima 9638611 Japan Tokyo Inst Technol Koriyama Fukushima 9630204 Japan

ISBN: (纸本)9780819482952

In many physical effects and sensors in biomedical or engineering fields, it is often the case that some small non-linear characteristics are contained in the system. The previous paper treats approximation of non-linear filter bank.(10) But, a running approximation is not treated. In this paper, we establish a theory of a favorable interpolation approximation of running filter banks with non-linear analysis filters based on the one-to-one correspondence between errors in a wide but limited volume and a certain small volume in the variable domain. Some additional considerations about the optimum interpolation approximation are presented also.

关键词： Nonlinear filtering Radon Error analysis Filtering (signal processing) Fourier transforms Electronic filtering Digital signal processing signal processing Finite impulse response filters Sensors

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Autonomous Airborne Wildlife Tracking Using Radio signal Strength

Autonomous Airborne Wildlife Tracking Using Radio Signal Str...

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IEEE/RSJ International conference on Intelligent Robots and Systems

作者： Koerner, Fabian Speck, Raphael Goektogan, Ali Haydar Sukkarieh, Salah Univ Stuttgart Inst Flight Mech & Control Stuttgart Germany Univ Karlsruhe Inst Syst Optimizat Karlsruhe Germany Univ Sydney Australian Ctr Field Robot Sydney NSW Australia

ISBN: (纸本)9781424466757

In wildlife radio tagging, small radio transmitters attached to animals are located by human operators using directional antennas and analog receivers which provide audio output. The location of the transmitter is determined by listening to the signal and scanning the area while closing in. This procedure can be very tedious, especially in rough terrain. Searching radio tags with autonomous unmanned aerial vehicles (UAVs) offers a number of advantages, including better line-of-sight signal reception, terrain-independence and faster localization. In this paper we continue upon previous work by presenting a received-signal-strength (RSS) sensor implementation based on a modified commercial wildlife tracking receiver that is designed to operate on an autonomous fixed-wing UAV. Furthermore, an extension of the search and tracking framework for multiple targets that are undistinguishable from the sensors' point of view is proposed. After a brief system overview and a summary of the particle filter based approach, the signal processing theory and realization of the RSS sensor are outlined, including strategies for frequency tracking and receiver gain control. The paper also presents experimental results.

关键词： RSS sensor analog receivers autonomous airborne wildlife tracking receiver autonomous fixed-wing UAV autonomous unmanned aerial vehicles directional antennas directive antennas frequency tracking human operators line-of-sight signal reception mobile radio mobile robots multiple target tracking particle filter particle filtering (numerical methods) radio receivers radio signal strength radio tracking radio transmitters radio transmitters received signal strength sensor implementation receiver gain control remotely operated vehicles signal processing theory target tracking wildlife radio tagging

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Low velocity small radar target detection in maritime environment

Low velocity small radar target detection in maritime enviro...

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2010 2nd International conference on signal processing Systems, ICSPS 2010

作者： Hao, Lou Lefeng, Zhang Dept. of Communication Engineering Engineering College of CAPF Xi'an China ATR Key Lab. National University of Defense Technology Changsha China

ISBN: (纸本)9781424468911

Researches on target detection are mainly focus on the amplitude characteristics nowadays. Sometimes the only use of amplitude characteristics is not enough to describe the signal, so that the target detection performance is usually poor. In this essay a method to make use of the information "hidden" in the signal phase is put forward, the theory is based on polynomial fitting of the signal phase train structure. At last, the method is validated using actual data. © 2010 IEEE.

关键词： Tracking radar

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New Detection Manifolds for Radar signal processing

New Detection Manifolds for Radar Signal Processing

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IEEE/AIAA Aerospace conference

作者： Ogle, William C. Goldstein, J. Scott Mendelson, Howard SAIC Inc 14668 Lee Rd Chantilly VA 20151 USA ManTech Int Corp Chantilly VA 20151 USA Trident Syst Inc Fairfax VA 22030 USA

ISBN: (纸本)9781424438884

This paper examines direct data domain (DDD) moving target detection for multi-channel space-based radar (SBR). DDD techniques differ from data-adaptive processing methods in that they do not rely on statistically stationary and homogeneous training data in order to estimate and null out clutter or interference and thereby reveal potential targets;instead, they operate on each range-Doppler cell independently, after any necessary preprocessing to compensate for platform motion and/or array calibration. Prior work examined a maximum-likelihood angle-of-arrival (AOA) technique and the associated target power estimator to detect slow moving targets. In this paper, we extend that methodology and propose novel detection manifolds for optimally partitioning the two-dimensional statistical space. The two dimensions are formed by the passive AOA likelihood function and the estimated target power. A computer simulation of a space radar system and associated geometry is used to assess the characteristics and performance of the new concept. We show that the two-dimensional probability densities corresponding to the target absent and target present hypotheses (H0 and H1, respectively) occupy regions in this space that are not optimally separated by independent thresholds. This immediately leads to the novel detection manifolds (or curved boundaries between detections and non-detections) that improve the detection probability while also reducing the false alarm rate.

关键词： Space-based radar

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