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2012 Vol. 34, No. 3
Display Method:
2012, 34(3): 509-516.
doi: 10.3724/SP.J.1146.2011.00916
Abstract:
Currently, the Coherent Point Drift (CPD) which based on Gaussian Mixture Model (GMM) is one of popular point pattern matching algorithms because of its robustness. However, The CPD is local optimization and its convergent rate is slower along with t...
Currently, the Coherent Point Drift (CPD) which based on Gaussian Mixture Model (GMM) is one of popular point pattern matching algorithms because of its robustness. However, The CPD is local optimization and its convergent rate is slower along with t...
2012, 34(3): 517-522.
doi: 10.3724/SP.J.1146.2011.00826
Abstract:
In order to improve the efficiency of stereo matching and obtain high-precision sub-pixel disparity, a fast stereo matching method based on small baseline is proposed. Firstly, integral image is used to speed up the calculation of adaptive window and...
In order to improve the efficiency of stereo matching and obtain high-precision sub-pixel disparity, a fast stereo matching method based on small baseline is proposed. Firstly, integral image is used to speed up the calculation of adaptive window and...
2012, 34(3): 523-528.
doi: 10.3724/SP.J.1146.2011.00633
Abstract:
Multi-classification method under t distribution is proposed in order to solve the problem of the traditional face classification methods failing to settle tailing situation with heavy-tailed noise. By adjusting the degree of freedom parameter v, t d...
Multi-classification method under t distribution is proposed in order to solve the problem of the traditional face classification methods failing to settle tailing situation with heavy-tailed noise. By adjusting the degree of freedom parameter v, t d...
2012, 34(3): 529-534.
doi: 10.3724/SP.J.1146.2011.00757
Abstract:
Considering the poor stability of the video object tracking methods in outdoor scenes when the background circumstance variation in object images occurs, a new method is presented for object tracking based on infrared and visible dual-channel video. ...
Considering the poor stability of the video object tracking methods in outdoor scenes when the background circumstance variation in object images occurs, a new method is presented for object tracking based on infrared and visible dual-channel video. ...
2012, 34(3): 535-542.
doi: 10.3724/SP.J.1146.2011.00700
Abstract:
Although the function set of Linear HyperPlane (LHP) obtained from the Separating HyperPlane (SHP) method based on direct marketing campaigns has a very low Vapnik-Chervonenkis dimension equal to 9 or lower and the corresponding optimized LHP can fas...
Although the function set of Linear HyperPlane (LHP) obtained from the Separating HyperPlane (SHP) method based on direct marketing campaigns has a very low Vapnik-Chervonenkis dimension equal to 9 or lower and the corresponding optimized LHP can fas...
2012, 34(3): 543-548.
doi: 10.3724/SP.J.1146.2011.00782
Abstract:
Weblog co-clustering is an important research content of Weblog mining, which has ability to find out the users clusters and pages clusters simultaneously. Most of the proposed Weblog co-clustering algorithm use hard partition method to assign the us...
Weblog co-clustering is an important research content of Weblog mining, which has ability to find out the users clusters and pages clusters simultaneously. Most of the proposed Weblog co-clustering algorithm use hard partition method to assign the us...
2012, 34(3): 549-556.
doi: 10.3724/SP.J.1146.2011.00784
Abstract:
In the era of Web 2.0, the convenience of human-network interaction fosters new social characteristics of Web services such as rating, comment, etc., which are often ignored by service providers. So, it is difficult to achieve an efficient User eXper...
In the era of Web 2.0, the convenience of human-network interaction fosters new social characteristics of Web services such as rating, comment, etc., which are often ignored by service providers. So, it is difficult to achieve an efficient User eXper...
2012, 34(3): 557-563.
doi: 10.3724/SP.J.1146.2011.00724
Abstract:
A novel variational denoising model is proposed based on the study of two-step model. By analysing the properties of new model, an efficient and fast numerical algorithm is introduced. There are two variables in the new model, so it is firstly turned...
A novel variational denoising model is proposed based on the study of two-step model. By analysing the properties of new model, an efficient and fast numerical algorithm is introduced. There are two variables in the new model, so it is firstly turned...
2012, 34(3): 564-570.
doi: 10.3724/SP.J.1146.2011.00665
Abstract:
For improving the sinusoidal signal frequency estimation at low Signal-to-Noise Ratio (SNR), a frequency estimation algorithm based on spectrums correlation of Multi-Section Co-Frequency (MSCF) sinusoids signal is proposed. Firstly, the Optimization ...
For improving the sinusoidal signal frequency estimation at low Signal-to-Noise Ratio (SNR), a frequency estimation algorithm based on spectrums correlation of Multi-Section Co-Frequency (MSCF) sinusoids signal is proposed. Firstly, the Optimization ...
2012, 34(3): 571-575.
doi: 10.3724/SP.J.1146.2011.00839
Abstract:
A new rapid speaker adaptation method based on maximum likelihood variable subspace is proposed. A set of bases of the speaker space is obtained by performing Principal Component Analysis (PCA) on the Speaker Dependent (SD) model parameters of the tr...
A new rapid speaker adaptation method based on maximum likelihood variable subspace is proposed. A set of bases of the speaker space is obtained by performing Principal Component Analysis (PCA) on the Speaker Dependent (SD) model parameters of the tr...
2012, 34(3): 576-581.
doi: 10.3724/SP.J.1146.2011.00611
Abstract:
Two novel DOA (Direction Of Arrival) estimation methods are proposed using sparse representation when the signal number is unknown. One is the method using sparse representation based on the eigenvector of covariance matrix. The biggest eigenvector o...
Two novel DOA (Direction Of Arrival) estimation methods are proposed using sparse representation when the signal number is unknown. One is the method using sparse representation based on the eigenvector of covariance matrix. The biggest eigenvector o...
2012, 34(3): 582-586.
doi: 10.3724/SP.J.1146.2011.00801
Abstract:
A multi-target location algorithm is proposed for MIMO radar with extended-aperture array of electromagnetic vector sensors. A novel bistatic MIMO radar system with multiple transmit sensors and multiple receive electromagnetic vectors is introduced,...
A multi-target location algorithm is proposed for MIMO radar with extended-aperture array of electromagnetic vector sensors. A novel bistatic MIMO radar system with multiple transmit sensors and multiple receive electromagnetic vectors is introduced,...
2012, 34(3): 587-593.
doi: 10.3724/SP.J.1146.2011.00713
Abstract:
In the conventional SAR Ground Moving Targets Indication (GMTI) method, the sample number is heavily large, increasing severely data transmission and storage load. To mitigate this problem, a SAR GMTI method is proposed based on Compressive Sensing (...
In the conventional SAR Ground Moving Targets Indication (GMTI) method, the sample number is heavily large, increasing severely data transmission and storage load. To mitigate this problem, a SAR GMTI method is proposed based on Compressive Sensing (...
2012, 34(3): 594-601.
doi: 10.3724/SP.J.1146.2011.00751
Abstract:
Detection of multiple unresolved targets is a frontier topic and pressing task in radar technology field. A signal fusion method of a T/R-R2 hybrid multistatic radar system is presented, target echo signal models of a monostatic radar receiver and tw...
Detection of multiple unresolved targets is a frontier topic and pressing task in radar technology field. A signal fusion method of a T/R-R2 hybrid multistatic radar system is presented, target echo signal models of a monostatic radar receiver and tw...
2012, 34(3): 602-608.
doi: 10.3724/SP.J.1146.2011.00607
Abstract:
The translational motion compensation methods for conventional Inverse Synthetic Aperture Radar (ISAR) are not suitable for ballistic targets. In the paper, an algorithm for ballistic targets translational motion compensation and micro-Doppler (m-D) ...
The translational motion compensation methods for conventional Inverse Synthetic Aperture Radar (ISAR) are not suitable for ballistic targets. In the paper, an algorithm for ballistic targets translational motion compensation and micro-Doppler (m-D) ...
2012, 34(3): 609-615.
doi: 10.3724/SP.J.1146.2011.00546
Abstract:
Micro-motion feature is one of the effective features used for radar target recognition in the middle section of the ballistic curve. Using the scattering centers of the cone-shaped warhead analyzed by the Geometrical Theory of Diffraction (GTD), it ...
Micro-motion feature is one of the effective features used for radar target recognition in the middle section of the ballistic curve. Using the scattering centers of the cone-shaped warhead analyzed by the Geometrical Theory of Diffraction (GTD), it ...
2012, 34(3): 616-621.
doi: 10.3724/SP.J.1146.2011.00650
Abstract:
Wide Angle Synthetic Aperture Radar (WASAR) undergoes a long data collection time and strong electromagnetic, radio frequency interference and azimuth disturbance could lead to missing-data problems. It suffers from aliasing errors, ambiguity and hig...
Wide Angle Synthetic Aperture Radar (WASAR) undergoes a long data collection time and strong electromagnetic, radio frequency interference and azimuth disturbance could lead to missing-data problems. It suffers from aliasing errors, ambiguity and hig...
2012, 34(3): 622-627.
doi: 10.3724/SP.J.1146.2011.00472
Abstract:
Bistatic ISAR systems can receive echoes from different observation angles simultaneously, thus a finer image with more abundant information of a certain target can be obtained by fusing the two images attained with bistatic radars. However, the dis-...
Bistatic ISAR systems can receive echoes from different observation angles simultaneously, thus a finer image with more abundant information of a certain target can be obtained by fusing the two images attained with bistatic radars. However, the dis-...
2012, 34(3): 628-632.
doi: 10.3724/SP.J.1146.2011.00702
Abstract:
Multi-channel SAR can achieve high resolution and wide swath at the same time, which overcoming the inherent limitations of conventional SAR system. Azimuth uniformly sampled data must be reconstructed in imaging procession. A novel method based on f...
Multi-channel SAR can achieve high resolution and wide swath at the same time, which overcoming the inherent limitations of conventional SAR system. Azimuth uniformly sampled data must be reconstructed in imaging procession. A novel method based on f...
2012, 34(3): 633-638.
doi: 10.3724/SP.J.1146.2011.00750
Abstract:
It is a common issue for Ballistic Missile (BM) to separate warheads in order to improve the penetration probability during reentry phase. For the reasons of unknown warhead number, closeness between target and warheads and similarity of reentry velo...
It is a common issue for Ballistic Missile (BM) to separate warheads in order to improve the penetration probability during reentry phase. For the reasons of unknown warhead number, closeness between target and warheads and similarity of reentry velo...
2012, 34(3): 639-643.
doi: 10.3724/SP.J.1146.2011.00673
Abstract:
Class B noise model is statistical-physical model for atmospheric noise. This paper proposes a nonlinear regression-type algorithm to estimate the parameters of Class B model. The algorithm based on characteristic function is derived from nonlinear r...
Class B noise model is statistical-physical model for atmospheric noise. This paper proposes a nonlinear regression-type algorithm to estimate the parameters of Class B model. The algorithm based on characteristic function is derived from nonlinear r...
2012, 34(3): 644-649.
doi: 10.3724/SP.J.1146.2011.00567
Abstract:
A deconvolution algorithm based on Compressive Sensing (CS) is proposed for the post-processing of Ultra WideBand (UWB) channel modeling using frequency-domain measurements. A window with Gaussian transition band is used to extract the measurements a...
A deconvolution algorithm based on Compressive Sensing (CS) is proposed for the post-processing of Ultra WideBand (UWB) channel modeling using frequency-domain measurements. A window with Gaussian transition band is used to extract the measurements a...
2012, 34(3): 650-656.
doi: 10.3724/SP.J.1146.2011.00394
Abstract:
To utilize the polarization state of primary signal which is the crucial vector characteristic for spectrum sensing, a rapid polarization adaptation algorithm is proposed based on the K-armed bandit. The proposed algorithm can reduce the complexity a...
To utilize the polarization state of primary signal which is the crucial vector characteristic for spectrum sensing, a rapid polarization adaptation algorithm is proposed based on the K-armed bandit. The proposed algorithm can reduce the complexity a...
2012, 34(3): 657-663.
doi: 10.3724/SP.J.1146.2011.00330
Abstract:
This paper investigates transceiver design, that minimizes the transmit power and balances all SINRs, for multiuser Multi-Input Multi-Output (MIMO) systems in the presence of imperfect Channel State Information (CSI). A worst-case SINR uplink-downlin...
This paper investigates transceiver design, that minimizes the transmit power and balances all SINRs, for multiuser Multi-Input Multi-Output (MIMO) systems in the presence of imperfect Channel State Information (CSI). A worst-case SINR uplink-downlin...
2012, 34(3): 664-669.
doi: 10.3724/SP.J.1146.2011.00655
Abstract:
The presence of the Line-Of-Sight (LOS) component will increase the condition number of the multi antenna channel matrix, and severely reduce detection performance of the synchronous multi-carrier layered space-time code. As a remedy to this problem,...
The presence of the Line-Of-Sight (LOS) component will increase the condition number of the multi antenna channel matrix, and severely reduce detection performance of the synchronous multi-carrier layered space-time code. As a remedy to this problem,...
2012, 34(3): 670-676.
doi: 10.3724/SP.J.1146.2011.00515
Abstract:
This paper considers multi-carrier heterogeneous cellular networks where only limited information can be shared among Base Stations (BSs) via backhaul links. Considering that there is frequency offset between macro and micro BSs, an optimal precoder ...
This paper considers multi-carrier heterogeneous cellular networks where only limited information can be shared among Base Stations (BSs) via backhaul links. Considering that there is frequency offset between macro and micro BSs, an optimal precoder ...
2012, 34(3): 677-682.
doi: 10.3724/SP.J.1146.2011.00707
Abstract:
For improving broadcasting efficiency of wireless network, a novel Network-Coding (NC)-based type-III Hybrid Automatic Repeat reQuest (HARQ) mechanism with Joint Network and Channel Decoding (JNCD) strategy is presented. A combination strategy is dev...
For improving broadcasting efficiency of wireless network, a novel Network-Coding (NC)-based type-III Hybrid Automatic Repeat reQuest (HARQ) mechanism with Joint Network and Channel Decoding (JNCD) strategy is presented. A combination strategy is dev...
2012, 34(3): 683-688.
doi: 10.3724/SP.J.1146.2011.00436
Abstract:
Millimeter-wave signals make the integration of antenna arrays technology possible, which can be employed to implement beamforming. However, with the increasing of antenna elements, the complexity of beam searching will also significantly increase. B...
Millimeter-wave signals make the integration of antenna arrays technology possible, which can be employed to implement beamforming. However, with the increasing of antenna elements, the complexity of beam searching will also significantly increase. B...
2012, 34(3): 689-693.
doi: 10.3724/SP.J.1146.2011.00732
Abstract:
Distributed algorithms which can find the Maximum Weight Independent Set (MWIS) of graphs are very important for the design of wireless networks. Based on the max-product belief propagation framework, a new distributed MWIS algorithm is proposed. In ...
Distributed algorithms which can find the Maximum Weight Independent Set (MWIS) of graphs are very important for the design of wireless networks. Based on the max-product belief propagation framework, a new distributed MWIS algorithm is proposed. In ...
2012, 34(3): 694-697.
doi: 10.3724/SP.J.1146.2011.00888
Abstract:
3D cipher is a new block cipher with Substitution-Permutation Network (SPN) structure. Unlike the Advanced Encryption Standard (AES), 3D cipher uses a 3-dimensional state. Based on the structure of 3D cipher, a 5-round meet-in-the-middle distinguishe...
3D cipher is a new block cipher with Substitution-Permutation Network (SPN) structure. Unlike the Advanced Encryption Standard (AES), 3D cipher uses a 3-dimensional state. Based on the structure of 3D cipher, a 5-round meet-in-the-middle distinguishe...
2012, 34(3): 698-703.
doi: 10.3724/SP.J.1146.2011.00799
Abstract:
Since current video quality assessment method based on Just Noticeable Distortion (JND) model can only assess monscopic video, a binocular JND model considering binocular luminance relationship is explored. First, binocular luminance relationship mod...
Since current video quality assessment method based on Just Noticeable Distortion (JND) model can only assess monscopic video, a binocular JND model considering binocular luminance relationship is explored. First, binocular luminance relationship mod...
2012, 34(3): 704-709.
doi: 10.3724/SP.J.1146.2011.00828
Abstract:
Device-to-Device (D2D) communication is a new technology that allows mobile terminals communicate with each other directly by using the licensed frequency resources under the control of cellular networks. D2D communications help to improve the effici...
Device-to-Device (D2D) communication is a new technology that allows mobile terminals communicate with each other directly by using the licensed frequency resources under the control of cellular networks. D2D communications help to improve the effici...
2012, 34(3): 710-715.
doi: 10.3724/SP.J.1146.2011.01032
Abstract:
Routing and Wavelength Assignment (RWA) is a key issue in next-generation optical networks. This paper presents an improved ant colony algorithm (Smart Ant-Dynamic RWA, SA-DRWA) to solve the RWA problem in optical networks. The link idle ratio is int...
Routing and Wavelength Assignment (RWA) is a key issue in next-generation optical networks. This paper presents an improved ant colony algorithm (Smart Ant-Dynamic RWA, SA-DRWA) to solve the RWA problem in optical networks. The link idle ratio is int...
2012, 34(3): 716-721.
doi: 10.3724/SP.J.1146.2011.00405
Abstract:
Target localization is one of the most challenging and important issues in Wireless Sensor Networks (WSNs). A multiple target localization method is proposed in WSNs. The multiple target localization issue is transformed into compressed sensing issue...
Target localization is one of the most challenging and important issues in Wireless Sensor Networks (WSNs). A multiple target localization method is proposed in WSNs. The multiple target localization issue is transformed into compressed sensing issue...
2012, 34(3): 722-727.
doi: 10.3724/SP.J.1146.2011.00753
Abstract:
Controlled synchronizibility of non-diffusively coupled complex networks is studied. After the analysis of eigenvalues distribution of outer coupling matrix of non-diffusively coupled complex networks, control law for synchronize non-diffusively coup...
Controlled synchronizibility of non-diffusively coupled complex networks is studied. After the analysis of eigenvalues distribution of outer coupling matrix of non-diffusively coupled complex networks, control law for synchronize non-diffusively coup...
2012, 34(3): 728-732.
doi: 10.3724/SP.J.1146.2011.00832
Abstract:
This paper presents the method of designing and fabricating 6-pole TeraHertz (THz) iris band-pass filter by adopting micromachining technology. Based on the existing process conditions, through analyzing the influence of process factors on electromag...
This paper presents the method of designing and fabricating 6-pole TeraHertz (THz) iris band-pass filter by adopting micromachining technology. Based on the existing process conditions, through analyzing the influence of process factors on electromag...
2012, 34(3): 733-738.
doi: 10.3724/SP.J.1146.2011.00654
Abstract:
To obtain the good performance for linearization, a digital predistortion algorithm is presented. Look-Up-Table (LUT) and memory-effect compensation techniques is combed, and the linear interpolation method is applied to the LUT. Compared to memory p...
To obtain the good performance for linearization, a digital predistortion algorithm is presented. Look-Up-Table (LUT) and memory-effect compensation techniques is combed, and the linear interpolation method is applied to the LUT. Compared to memory p...
2012, 34(3): 739-743.
doi: 10.3724/SP.J.1146.2011.00580
Abstract:
A large signal computation model of the beam-wave interaction in the External Interaction Klystron (EIK) is presented. This mode bases on the one dimensional electron disk model with considering the space charge force between the electrons. The equiv...
A large signal computation model of the beam-wave interaction in the External Interaction Klystron (EIK) is presented. This mode bases on the one dimensional electron disk model with considering the space charge force between the electrons. The equiv...
An Optimization Algorithm Based on Computation Structure of Correlation in Digital Lock-in Detection
2012, 34(3): 744-748.
doi: 10.3724/SP.J.1146.2011.00333
Abstract:
In order to give consideration to both of the precision and speed to improve the comprehensive properties of the detecting system, a new high-speed algorithm is proposed based on computation structure of correlation in digital lock-in detection and i...
In order to give consideration to both of the precision and speed to improve the comprehensive properties of the detecting system, a new high-speed algorithm is proposed based on computation structure of correlation in digital lock-in detection and i...
2012, 34(3): 749-753.
doi: 10.3724/SP.J.1146.2011.00417
Abstract:
The Direction-Of-Arrival (DOA) tracking of coherent signals is researched based on polarization vector- sensor array. The decorrelative performance of a Single Snapshot Polarization Smoothing Algorithm (SSPSA), which is available for the fast estimat...
The Direction-Of-Arrival (DOA) tracking of coherent signals is researched based on polarization vector- sensor array. The decorrelative performance of a Single Snapshot Polarization Smoothing Algorithm (SSPSA), which is available for the fast estimat...
2012, 34(3): 754-757.
doi: 10.3724/SP.J.1146.2011.00621
Abstract:
For high-speed weak targets, a fast method of target parameter estimation is presented in this paper. After analyzing the factors which influence high-speed target,s range migration, it pointed out that the range migration exhibits a straight line wi...
For high-speed weak targets, a fast method of target parameter estimation is presented in this paper. After analyzing the factors which influence high-speed target,s range migration, it pointed out that the range migration exhibits a straight line wi...
2012, 34(3): 758-762.
doi: 10.3724/SP.J.1146.2011.00725
Abstract:
Interval vector is a crucial parameter of primitive-LFSR, but the reserch about the interval vector is little. Based on interval vector, the correctness of decimation conjecture is first proved when m=2, and then some properties about the decimation ...
Interval vector is a crucial parameter of primitive-LFSR, but the reserch about the interval vector is little. Based on interval vector, the correctness of decimation conjecture is first proved when m=2, and then some properties about the decimation ...
