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2013 Vol. 35, No. 4
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2013, 35(4): 763-769.
doi: 10.3724/SP.J.1146.2012.01225
Abstract:
The particle filter is a nonlinear filtering algorithm and it is widely used in target tracking. In the basic particle filter, the particles are scattered by Gaussian distributions, and the target for low-speed movement and gentle changes can be bett...
The particle filter is a nonlinear filtering algorithm and it is widely used in target tracking. In the basic particle filter, the particles are scattered by Gaussian distributions, and the target for low-speed movement and gentle changes can be bett...
2013, 35(4): 770-776.
doi: 10.3724/SP.J.1146.2012.01095
Abstract:
In order to solve the problems of color similar target, scale change and occlusion in target tracking, this paper proposes an adaptive fragments-based target tracking method fusing color histogram and SIFT features. Taking color projection and imagin...
In order to solve the problems of color similar target, scale change and occlusion in target tracking, this paper proposes an adaptive fragments-based target tracking method fusing color histogram and SIFT features. Taking color projection and imagin...
2013, 35(4): 777-783.
doi: 10.3724/SP.J.1146.2012.01023
Abstract:
This paper presents a master-salve tracking framework for wide area video surveillance with two Pan-Tilt-Zoom (PTZ) cameras, which is inspired by the chameleon vision of highly independent and symmetric, attention to both overall and local visual eve...
This paper presents a master-salve tracking framework for wide area video surveillance with two Pan-Tilt-Zoom (PTZ) cameras, which is inspired by the chameleon vision of highly independent and symmetric, attention to both overall and local visual eve...
2013, 35(4): 784-790.
doi: 10.3724/SP.J.1146.2012.01078
Abstract:
Considering the position and direction of trajectories of moving objects, a trajectory classification algorithm is proposed based on improved Hausdorff distance and Longest Common SubSequence (LCSS) to improve the trajectories classification. In this...
Considering the position and direction of trajectories of moving objects, a trajectory classification algorithm is proposed based on improved Hausdorff distance and Longest Common SubSequence (LCSS) to improve the trajectories classification. In this...
2013, 35(4): 791-796.
doi: 10.3724/SP.J.1146.2012.00759
Abstract:
Active contour models are successfully and widely used in image segmentation. However, they always get local minima which make wrong segmentation results. In this paper, based on previous work named background removed model, a convex energy which is ...
Active contour models are successfully and widely used in image segmentation. However, they always get local minima which make wrong segmentation results. In this paper, based on previous work named background removed model, a convex energy which is ...
2013, 35(4): 797-804.
doi: 10.3724/SP.J.1146.2012.00914
Abstract:
To balance high embedding capacity and imperceptibility of reversible watermarking algorithm for digital images, a novel Reversible Watermarking Algorithm based on Block Adaptive Compressed Sensing (BACS-RWA) is proposed. The host image is divided in...
To balance high embedding capacity and imperceptibility of reversible watermarking algorithm for digital images, a novel Reversible Watermarking Algorithm based on Block Adaptive Compressed Sensing (BACS-RWA) is proposed. The host image is divided in...
2013, 35(4): 805-811.
doi: 10.3724/SP.J.1146.2012.00949
Abstract:
It is always important issue to extract features that are most effective for preserving the distribution architecture in pattern recognition community. Kernel based methods are assumed to extract nonlinear features. However, it is very sensitive to t...
It is always important issue to extract features that are most effective for preserving the distribution architecture in pattern recognition community. Kernel based methods are assumed to extract nonlinear features. However, it is very sensitive to t...
2013, 35(4): 812-819.
doi: 10.3724/SP.J.1146.2012.00947
Abstract:
Demosaicking is important for the quality of digital images in resource-constrained single chip devices. This paper presents an improved dictionary learning-based color demosaicking algorithm. Firstly, an initial interpolation is applied to the,chann...
Demosaicking is important for the quality of digital images in resource-constrained single chip devices. This paper presents an improved dictionary learning-based color demosaicking algorithm. Firstly, an initial interpolation is applied to the,chann...
2013, 35(4): 820-825.
doi: 10.3724/SP.J.1146.2012.00589
Abstract:
By improving the Spatial-Temporal Total Variation (ST-TV) method, a video image reconstruction approach based on the Spatial Temporal Weighted Total Variation (ST-WTV) is proposed in this paper. By introducing ST-WTV as a regular term, a new model is...
By improving the Spatial-Temporal Total Variation (ST-TV) method, a video image reconstruction approach based on the Spatial Temporal Weighted Total Variation (ST-WTV) is proposed in this paper. By introducing ST-WTV as a regular term, a new model is...
2013, 35(4): 826-831.
doi: 10.3724/SP.J.1146.2012.00921
Abstract:
Fast Alternating Direction Method of Multipliers (FADMM) is proposed to solve the l0-regularisation issue, which is a problem of signal compression and reconstruction for Compressed Sensing (CS). The first step of FADMM is to express the l0-regularis...
Fast Alternating Direction Method of Multipliers (FADMM) is proposed to solve the l0-regularisation issue, which is a problem of signal compression and reconstruction for Compressed Sensing (CS). The first step of FADMM is to express the l0-regularis...
2013, 35(4): 832-837.
doi: 10.3724/SP.J.1146.2012.01047
Abstract:
Precise synchronization can be achieved by fitting phase discrimination curve exploiting Least Squares (LS). However, this method not only has very high requirement of coarse synchronization, but also can not counteract frequency- offset effectively....
Precise synchronization can be achieved by fitting phase discrimination curve exploiting Least Squares (LS). However, this method not only has very high requirement of coarse synchronization, but also can not counteract frequency- offset effectively....
2013, 35(4): 838-843.
doi: 10.3724/SP.J.1146.2012.00912
Abstract:
This paper discusses choice for scaling parameter of the unscented transformation. By analyzing and comparing some scaling parameter selection methods, the scaling parameter is selected as an optimization objective. Differential Evolution (DE) algori...
This paper discusses choice for scaling parameter of the unscented transformation. By analyzing and comparing some scaling parameter selection methods, the scaling parameter is selected as an optimization objective. Differential Evolution (DE) algori...
2013, 35(4): 844-851.
doi: 10.3724/SP.J.1146.2012.01008
Abstract:
The analysis of the target radiated noise model is made as a precondition under the background of fluctuating sound field firstly. A broad and narrow band integrated coherent detection algorithm based on phase fluctuation and differential alignment i...
The analysis of the target radiated noise model is made as a precondition under the background of fluctuating sound field firstly. A broad and narrow band integrated coherent detection algorithm based on phase fluctuation and differential alignment i...
2013, 35(4): 852-858.
doi: 10.3724/SP.J.1146.2012.00607
Abstract:
Because of the special track of circular SAR, the imaging algorithms of SAR in linear track can not be used in processing the circular SAR data directly. However, the response functions of the circular SAR systems can remain the consistency by changi...
Because of the special track of circular SAR, the imaging algorithms of SAR in linear track can not be used in processing the circular SAR data directly. However, the response functions of the circular SAR systems can remain the consistency by changi...
2013, 35(4): 859-864.
doi: 10.3724/SP.J.1146.2012.01121
Abstract:
Owning to the fact that the high speed moving target moves across several range cells during the long coherent observation period, joint Direction Of Departures (DODs) and Direction Of Arrivals (DOAs) estimation with the echo data located at the sing...
Owning to the fact that the high speed moving target moves across several range cells during the long coherent observation period, joint Direction Of Departures (DODs) and Direction Of Arrivals (DOAs) estimation with the echo data located at the sing...
2013, 35(4): 865-870.
doi: 10.3724/SP.J.1146.2012.01573
Abstract:
The common predictions of angular glint are usually based on the condition of far-field hypothesis. However, computation of near field angular glint is very meaningful?both in academic studies and engineering applications due to its huge impact on tr...
The common predictions of angular glint are usually based on the condition of far-field hypothesis. However, computation of near field angular glint is very meaningful?both in academic studies and engineering applications due to its huge impact on tr...
2013, 35(4): 871-876.
doi: 10.3724/SP.J.1146.2012.01011
Abstract:
Using passive radar with Orthogonal Frequency Division Multiplexing (OFDM) waveform for target track and location is recently a research spot at home and abroad. This paper first introduces the signal model for passive radar with OFDM waveform and ke...
Using passive radar with Orthogonal Frequency Division Multiplexing (OFDM) waveform for target track and location is recently a research spot at home and abroad. This paper first introduces the signal model for passive radar with OFDM waveform and ke...
2013, 35(4): 877-881.
doi: 10.3724/SP.J.1146.2012.00797
Abstract:
The information of targets Direction Of Arriving (DOA) is very important for target location. But in passive radar, the weak target echoes are usually embedded in the background of strong direct signal, multipath and noise. So it is very difficult to...
The information of targets Direction Of Arriving (DOA) is very important for target location. But in passive radar, the weak target echoes are usually embedded in the background of strong direct signal, multipath and noise. So it is very difficult to...
2013, 35(4): 882-887.
doi: 10.3724/SP.J.1146.2012.00927
Abstract:
Based on the fluctuation analysis, a novel approach for target detection in sea clutter is proposed. The self-affinity and scaling behaviors of sea clutter is analyzed by using the mean fluctuation. The q order normalized slope of fluctuation curve, ...
Based on the fluctuation analysis, a novel approach for target detection in sea clutter is proposed. The self-affinity and scaling behaviors of sea clutter is analyzed by using the mean fluctuation. The q order normalized slope of fluctuation curve, ...
2013, 35(4): 888-893.
doi: 10.3724/SP.J.1146.2012.01462
Abstract:
Range-dependent clutter suppression is one of the most important problem in the airborne bistatic radar Space-Time Adaptive Processing (STAP). To overcome the problem, a novel technique using overlapped subarray alternate transmitting is developed. B...
Range-dependent clutter suppression is one of the most important problem in the airborne bistatic radar Space-Time Adaptive Processing (STAP). To overcome the problem, a novel technique using overlapped subarray alternate transmitting is developed. B...
2013, 35(4): 894-900.
doi: 10.3724/SP.J.1146.2012.01026
Abstract:
Classification of moving vehicles within short dwell time is a promising way to the introduction of the target identification function to battlefield surveillance radar system. In this paper, radar returned echoes of moving wheeled and tracked vehicl...
Classification of moving vehicles within short dwell time is a promising way to the introduction of the target identification function to battlefield surveillance radar system. In this paper, radar returned echoes of moving wheeled and tracked vehicl...
2013, 35(4): 901-907.
doi: 10.3724/SP.J.1146.2012.00883
Abstract:
For the requirement of making full use of the limited resource in real application, this paper proposes a power allocation scheme for 3D target tracking in multistatic radar systems. Firstly, the Bayesian Cramer Rao Lower Bound (BCRLB) for 3D target ...
For the requirement of making full use of the limited resource in real application, this paper proposes a power allocation scheme for 3D target tracking in multistatic radar systems. Firstly, the Bayesian Cramer Rao Lower Bound (BCRLB) for 3D target ...
2013, 35(4): 908-914.
doi: 10.3724/SP.J.1146.2012.01058
Abstract:
Presently, the radar altimeter look-up correction tables are usually computed with an approximate exponential flat sea surface response function, and the effects of this approximation are neglected. In this paper, the errors of this approximation met...
Presently, the radar altimeter look-up correction tables are usually computed with an approximate exponential flat sea surface response function, and the effects of this approximation are neglected. In this paper, the errors of this approximation met...
2013, 35(4): 915-920.
doi: 10.3724/SP.J.1146.2012.01200
Abstract:
The systemic bias of space-based sensor hinders accurate threat identification and target location of coming targets. The correction of this systematic bias has unique difficulties including unable to in-situ commissioning and systemic bias periodica...
The systemic bias of space-based sensor hinders accurate threat identification and target location of coming targets. The correction of this systematic bias has unique difficulties including unable to in-situ commissioning and systemic bias periodica...
2013, 35(4): 921-926.
doi: 10.3724/SP.J.1146.2012.01065
Abstract:
This paper propses a filtering method for GPS/DR (Global Positioning System/Dead-Reckoning) integrated navigation system with unknown parameters. This method firstly structures a self-organizing state space model, and then estimates the state vector ...
This paper propses a filtering method for GPS/DR (Global Positioning System/Dead-Reckoning) integrated navigation system with unknown parameters. This method firstly structures a self-organizing state space model, and then estimates the state vector ...
Fast Image Reconstruction for Non-uniform Sampling of Thinned Array of Synthesis Aperture Radiometer
2013, 35(4): 927-932.
doi: 10.3724/SP.J.1146.2012.00688
Abstract:
Some thinned array, such as circle thinned array, is used by synthetic aperture interferometric radiometer to realize time-shared sampling. The thinned array may take non-uniform sampling of spatial frequencies due to antenna array structure optimiza...
Some thinned array, such as circle thinned array, is used by synthetic aperture interferometric radiometer to realize time-shared sampling. The thinned array may take non-uniform sampling of spatial frequencies due to antenna array structure optimiza...
2013, 35(4): 933-938.
doi: 10.3724/SP.J.1146.2012.01029
Abstract:
To guarantee the QoS of multi-hop wireless networks, it is necessary to analyse the delay bound of the system. Based on stochastic network calculus, this paper models traffic flowing scenarios of multi-hop wireless networks utilizing three flow opera...
To guarantee the QoS of multi-hop wireless networks, it is necessary to analyse the delay bound of the system. Based on stochastic network calculus, this paper models traffic flowing scenarios of multi-hop wireless networks utilizing three flow opera...
2013, 35(4): 939-945.
doi: 10.3724/SP.J.1146.2012.01088
Abstract:
Dynamic Spectrum Allocation (DSA) in heterogeneous wireless networks is investigated for the downlink communication of cellular Base Stations (BSs). A new Interference Control (IC) model for the case of log-normal shadowing is proposed based on Cover...
Dynamic Spectrum Allocation (DSA) in heterogeneous wireless networks is investigated for the downlink communication of cellular Base Stations (BSs). A new Interference Control (IC) model for the case of log-normal shadowing is proposed based on Cover...
2013, 35(4): 946-951.
doi: 10.3724/SP.J.1146.2012.01110
Abstract:
The demand of broadband access to mobile Internet has experienced rapid growth in recent years, which brings both great opportunities and challenges to the mobile operators. It is the operators focus of concern to find optimized pricing mechanism to ...
The demand of broadband access to mobile Internet has experienced rapid growth in recent years, which brings both great opportunities and challenges to the mobile operators. It is the operators focus of concern to find optimized pricing mechanism to ...
2013, 35(4): 952-957.
doi: 10.3724/SP.J.1146.2012.00983
Abstract:
With the rapid growth of network traffic, applications of the multi-path transmission are becoming more popular. The multi-path routing algorithms are the base to implement multi-path transmission. In this paper, a new Multi-path routing algorithm ba...
With the rapid growth of network traffic, applications of the multi-path transmission are becoming more popular. The multi-path routing algorithms are the base to implement multi-path transmission. In this paper, a new Multi-path routing algorithm ba...
2013, 35(4): 958-964.
doi: 10.3724/SP.J.1146.2012.01040
Abstract:
Considering at the concept drift issue of machine learning identification, a novel algorithm called traffic classification based on Host Connection Graph (HCG) is proposed. Considering {IP Address, Port} as the unique user identifier, HCG constructs ...
Considering at the concept drift issue of machine learning identification, a novel algorithm called traffic classification based on Host Connection Graph (HCG) is proposed. Considering {IP Address, Port} as the unique user identifier, HCG constructs ...
2013, 35(4): 965-969.
doi: 10.3724/SP.J.1146.2012.01128
Abstract:
With the rapid development of heterogeneous wireless multimedia sensor networks, how to satisfy all the requirement of data source and provide QoS for it becomes a hot research issue. Differentiated Queuing Service (DQS) is introduced into wireless m...
With the rapid development of heterogeneous wireless multimedia sensor networks, how to satisfy all the requirement of data source and provide QoS for it becomes a hot research issue. Differentiated Queuing Service (DQS) is introduced into wireless m...
2013, 35(4): 970-976.
doi: 10.3724/SP.J.1146.2012.00940
Abstract:
Privacy preservation in wireless sensor networks has attracted more and more attentions. Computing MAX/MIN query result in wireless sensor networks while preserving data privacy is a challenge. This paper proposes a Zero-One (Z-O) encoding based Priv...
Privacy preservation in wireless sensor networks has attracted more and more attentions. Computing MAX/MIN query result in wireless sensor networks while preserving data privacy is a challenge. This paper proposes a Zero-One (Z-O) encoding based Priv...
2013, 35(4): 977-981.
doi: 10.3724/SP.J.1146.2012.01118
Abstract:
Community mining in dynamic networks can help to obtain the whole network characteristics and the trend of network development. As dynamic networks usually consist of many consecutive static networks, traditional methods of identifying network commun...
Community mining in dynamic networks can help to obtain the whole network characteristics and the trend of network development. As dynamic networks usually consist of many consecutive static networks, traditional methods of identifying network commun...
2013, 35(4): 982-987.
doi: 10.3724/SP.J.1146.2012.01282
Abstract:
Load balancing is a fundamental problem for cloud computing, multi-processing load balancing session persistence in multi-core environment have drawn more attention and have become a focus. For the issue, based on the idea of Hash Linux kernel networ...
Load balancing is a fundamental problem for cloud computing, multi-processing load balancing session persistence in multi-core environment have drawn more attention and have become a focus. For the issue, based on the idea of Hash Linux kernel networ...
2013, 35(4): 988-993.
doi: 10.3724/SP.J.1146.2012.01102
Abstract:
Fully homomorphic encryption has important application in cloud computing. However, the existing fully homomorphic encryption schemes share a common flaw that they all use public keys of large scales. And this flaw may cause inefficiency of these sch...
Fully homomorphic encryption has important application in cloud computing. However, the existing fully homomorphic encryption schemes share a common flaw that they all use public keys of large scales. And this flaw may cause inefficiency of these sch...
2013, 35(4): 994-1000.
doi: 10.3724/SP.J.1146.2012.01030
Abstract:
To solve the problem of soft error caused by Single Event Upset (SEU) in Static Random Access Memory (SRAM)-based Field Programmable Gate Arrays (FPGAs), the impact of routing resources by Single Bit Upset (SBU) and Multiple Bit Upset (MBU) is analyz...
To solve the problem of soft error caused by Single Event Upset (SEU) in Static Random Access Memory (SRAM)-based Field Programmable Gate Arrays (FPGAs), the impact of routing resources by Single Bit Upset (SBU) and Multiple Bit Upset (MBU) is analyz...
2013, 35(4): 1001-1006.
doi: 10.3724/SP.J.1146.2012.00650
Abstract:
Periods with high branch misprediction rate tend to be uneven and concentrated during execution of programs. To address this problem, a new branch prediction strategy is proposed, which based on dynamic polarity transformation. This approach monitors...
Periods with high branch misprediction rate tend to be uneven and concentrated during execution of programs. To address this problem, a new branch prediction strategy is proposed, which based on dynamic polarity transformation. This approach monitors...
2013, 35(4): 1007-1011.
doi: 10.3724/SP.J.1146.2012.01090
Abstract:
A modeling and analysis scheme based on Markov chain for Random Access MAC (RA-MAC) protocol of cognitive radio networks are proposed. A three-state Markov chain model of channel is presented, while the problem of dynamic characteristic of channel is...
A modeling and analysis scheme based on Markov chain for Random Access MAC (RA-MAC) protocol of cognitive radio networks are proposed. A three-state Markov chain model of channel is presented, while the problem of dynamic characteristic of channel is...
2013, 35(4): 1012-1016.
doi: 10.3724/SP.J.1146.2012.01106
Abstract:
In order to solve the problem that the covert timing channel works unstable in the noisy network, a method of designing robust covert channel is proposed. The method uses the interval time of network packets to transfer information, the sender codes ...
In order to solve the problem that the covert timing channel works unstable in the noisy network, a method of designing robust covert channel is proposed. The method uses the interval time of network packets to transfer information, the sender codes ...
