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2014 Vol. 36, No. 5
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2014, 36(5): 1017-1022.
doi: 10.3724/SP.J.1146.2013.00994
Abstract:
In order to improve the viability of MIMO radar in electronic warfare, the relationship between radar parameters and its searching performance as well as the Radio Frequency (RF) stealth performance is firstly analyzed. An RF stealth optimization mod...
In order to improve the viability of MIMO radar in electronic warfare, the relationship between radar parameters and its searching performance as well as the Radio Frequency (RF) stealth performance is firstly analyzed. An RF stealth optimization mod...
2014, 36(5): 1023-1029.
doi: 10.3724/SP.J.1146.2013.00969
Abstract:
The non-equispaced along-track motion has serious impact on SAR imaging. The SAR images are geometric distorted after the along-track motion compensation, which may impair the quality of the sub-image connection and the multi-spectral SAR image fusio...
The non-equispaced along-track motion has serious impact on SAR imaging. The SAR images are geometric distorted after the along-track motion compensation, which may impair the quality of the sub-image connection and the multi-spectral SAR image fusio...
2014, 36(5): 1030-1035.
doi: 10.3724/SP.J.1146.2013.01006
Abstract:
To deal with the clutter suppression issue in the moving target detection for the near-shore water regions with azimuth multichannel SAR systems, the multichannel steering vector of the ambiguous clutter is derived, and the multichannel signal model ...
To deal with the clutter suppression issue in the moving target detection for the near-shore water regions with azimuth multichannel SAR systems, the multichannel steering vector of the ambiguous clutter is derived, and the multichannel signal model ...
2014, 36(5): 1036-1043.
doi: 10.3724/SP.J.1146.2013.00945
Abstract:
A two-step imaging algorithm for focusing airborne parallel high squint Synthetic Aperture Radar (SAR) data is proposed in this paper. For the serious cross coupling of echo signal in bistatic high squint SAR, Linear Range Walk Correction (LRWC) is p...
A two-step imaging algorithm for focusing airborne parallel high squint Synthetic Aperture Radar (SAR) data is proposed in this paper. For the serious cross coupling of echo signal in bistatic high squint SAR, Linear Range Walk Correction (LRWC) is p...
2014, 36(5): 1044-1048.
doi: 10.3724/SP.J.1146.2013.01139
Abstract:
In order to investigate amplitude statistics and variation under different ocean parameters of L-band low grazing angle sea clutter, in this paper, based on the L band real sea clutter data collected in different wave height and wind direction and pr...
In order to investigate amplitude statistics and variation under different ocean parameters of L-band low grazing angle sea clutter, in this paper, based on the L band real sea clutter data collected in different wave height and wind direction and pr...
2014, 36(5): 1049-1054.
doi: 10.3724/SP.J.1146.2013.01040
Abstract:
Dense repeater jamming not only causes false alarms, but also raises the threshold of constant false alarm ratio detector nearby the jamming, which degrades the performance of targets detection. On the other hand, the samples contaminated by jamming ...
Dense repeater jamming not only causes false alarms, but also raises the threshold of constant false alarm ratio detector nearby the jamming, which degrades the performance of targets detection. On the other hand, the samples contaminated by jamming ...
2014, 36(5): 1055-1061.
doi: 10.3724/SP.J.1146.2013.00469
Abstract:
In order to satisfy the requirement of the air traffic control and the battle-filed command system, a three-dimensional (3D) tracking algorithm in distributed two-dimensional (2D) radar network is proposed. Firstly, this paper starts from the general...
In order to satisfy the requirement of the air traffic control and the battle-filed command system, a three-dimensional (3D) tracking algorithm in distributed two-dimensional (2D) radar network is proposed. Firstly, this paper starts from the general...
2014, 36(5): 1062-1068.
doi: 10.3724/SP.J.1146.2013.00957
Abstract:
SAR imaging simulator is an important tool for understanding and implementing the SAR images. In the light of the structural features of buildings, a novel fast SAR imaging simulator for urban structures based on facet projection model is proposed to...
SAR imaging simulator is an important tool for understanding and implementing the SAR images. In the light of the structural features of buildings, a novel fast SAR imaging simulator for urban structures based on facet projection model is proposed to...
2014, 36(5): 1069-1074.
doi: 10.3724/SP.J.1146.2013.01097
Abstract:
The joint acquisition algorithm is used for collection detection of the multi-satellite signals, given the lack of analysis and assessment on its detection performance. To make the case, the processing gain is adopted to measure the improved the leve...
The joint acquisition algorithm is used for collection detection of the multi-satellite signals, given the lack of analysis and assessment on its detection performance. To make the case, the processing gain is adopted to measure the improved the leve...
2014, 36(5): 1075-1081.
doi: 10.3724/SP.J.1146.2013.01019
Abstract:
The two-stage Weighted Least Squares (WLS) method is a well-known linear approach in Time- Difference-Of-Arrival (TDOA) and Frequency-Difference-Of-Arrival (FDOA) passive localization. But this method can only attain the CRLB in a modest noise enviro...
The two-stage Weighted Least Squares (WLS) method is a well-known linear approach in Time- Difference-Of-Arrival (TDOA) and Frequency-Difference-Of-Arrival (FDOA) passive localization. But this method can only attain the CRLB in a modest noise enviro...
2014, 36(5): 1082-1087.
doi: 10.3724/SP.J.1146.2013.01016
Abstract:
Regional energy focusing is a crucial technology for precision energy delivery. This paper mainly focuses on one of its typical applications: PRecision Electronic Warfare (PREW), and a new regional energy focusing method under ultra-sparse array is p...
Regional energy focusing is a crucial technology for precision energy delivery. This paper mainly focuses on one of its typical applications: PRecision Electronic Warfare (PREW), and a new regional energy focusing method under ultra-sparse array is p...
2014, 36(5): 1088-1093.
doi: 10.3724/SP.J.1146.2013.00967
Abstract:
This paper discusses the issue of multiple targets Direction Of Arrival (DOA) estimation for Spatially Spread Polarization Sensitive Array (SS-PSA). First, the signal model of sparsely uniform SS-PSA with three orthogonally oriented polarized-antenna...
This paper discusses the issue of multiple targets Direction Of Arrival (DOA) estimation for Spatially Spread Polarization Sensitive Array (SS-PSA). First, the signal model of sparsely uniform SS-PSA with three orthogonally oriented polarized-antenna...
2014, 36(5): 1094-1099.
doi: 10.3724/SP.J.1146.2013.00951
Abstract:
The complex fast fixed-point algorithm, also called complex FastICA, is one of the most important algorithms for Blind Signal Separation (BSS). However, the performance of this algorithm deteriorates when it is used to separate the noisy mixed source...
The complex fast fixed-point algorithm, also called complex FastICA, is one of the most important algorithms for Blind Signal Separation (BSS). However, the performance of this algorithm deteriorates when it is used to separate the noisy mixed source...
2014, 36(5): 1100-1105.
doi: 10.3724/SP.J.1146.2013.01025
Abstract:
The joint estimation of the Direction of Arrival (DOA) and gain-phase errors can be implemented by the joint iteration method based on the eigen structure subspaces. However, when applying the method to correct the amplitude and phase error of the co...
The joint estimation of the Direction of Arrival (DOA) and gain-phase errors can be implemented by the joint iteration method based on the eigen structure subspaces. However, when applying the method to correct the amplitude and phase error of the co...
2014, 36(5): 1106-1112.
doi: 10.3724/SP.J.1146.2013.01013
Abstract:
In view of reducing the effects of cross terms, conventional methods of parameter estimation for Linear Frequency Modulation (LFM) signals suffer from low accuracy and huge computational complexity. To solve these problems, LVs Distribution (LVD) bas...
In view of reducing the effects of cross terms, conventional methods of parameter estimation for Linear Frequency Modulation (LFM) signals suffer from low accuracy and huge computational complexity. To solve these problems, LVs Distribution (LVD) bas...
2014, 36(5): 1113-1118.
doi: 10.3724/SP.J.1146.2013.01127
Abstract:
This paper proposes a Modified Reduced-Dimensional MUSIC (MRD-MUSIC) Direction Of Arrival (DOA) estimation algorithm to solve the computation-intensive problem in the two-dimensional DOA estimations. The MRD-MUSIC algorithm can distinctly reduce the ...
This paper proposes a Modified Reduced-Dimensional MUSIC (MRD-MUSIC) Direction Of Arrival (DOA) estimation algorithm to solve the computation-intensive problem in the two-dimensional DOA estimations. The MRD-MUSIC algorithm can distinctly reduce the ...
2014, 36(5): 1119-1125.
doi: 10.3724/SP.J.1146.2013.01102
Abstract:
According to the Doppler shift of moving acoustic source, three methods are presented for identification of noise sources of underwater moving target with single hydrophone. Firstly, the weak Doppler shift curves are obtained accurately by windowed c...
According to the Doppler shift of moving acoustic source, three methods are presented for identification of noise sources of underwater moving target with single hydrophone. Firstly, the weak Doppler shift curves are obtained accurately by windowed c...
2014, 36(5): 1126-1132.
doi: 10.3724/SP.J.1146.2013.00400
Abstract:
A novel image fusion method based on supervised intelligent learning is proposed in order to overcome the difficulty in the use of priori knowledge in image fusion. In this study, the images database for supervised learning is first constructed，then ...
A novel image fusion method based on supervised intelligent learning is proposed in order to overcome the difficulty in the use of priori knowledge in image fusion. In this study, the images database for supervised learning is first constructed，then ...
2014, 36(5): 1133-1138.
doi: 10.3724/SP.J.1146.2013.00477
Abstract:
The detection to target in motion is a key technology in video analysis. This paper proposes a target detection algorithm based on a multi-scale motion attention analysis, which provides a new method for motion target detection under a global motion ...
The detection to target in motion is a key technology in video analysis. This paper proposes a target detection algorithm based on a multi-scale motion attention analysis, which provides a new method for motion target detection under a global motion ...
Human Activity Recognition Using Multi-layered Motion History Images with Time-Of-Fligh (TOF) Camera
2014, 36(5): 1139-1144.
doi: 10.3724/SP.J.1146.2013.01003
Abstract:
A new method extended from motion history image called Multi-Layered Mmotion History Images (MLMHI) is proposed to the representation and recognition of human activity using depth images provided by Time-Of-Fligh (TOF) camera. Firstly, the motion-ene...
A new method extended from motion history image called Multi-Layered Mmotion History Images (MLMHI) is proposed to the representation and recognition of human activity using depth images provided by Time-Of-Fligh (TOF) camera. Firstly, the motion-ene...
2014, 36(5): 1145-1150.
doi: 10.3724/SP.J.1146.2013.00962
Abstract:
RANdom SAmple Consensus (RANSAC) performs poor with the mass of data, high outliers ratio and complicated models. In this paper, a highly parallel voting version of RANSAC is presented. On the basis of parallelizing the hypothetical stage and generat...
RANdom SAmple Consensus (RANSAC) performs poor with the mass of data, high outliers ratio and complicated models. In this paper, a highly parallel voting version of RANSAC is presented. On the basis of parallelizing the hypothetical stage and generat...
2014, 36(5): 1151-1157.
doi: 10.3724/SP.J.1146.2013.00976
Abstract:
Based on fast convolution algorithm, improved parallel FIR filter structures are proposed for linear- phase FIR filters where the number of taps is a multiple of parallelism. The proposed parallel FIR structures not only use fast convolution algorith...
Based on fast convolution algorithm, improved parallel FIR filter structures are proposed for linear- phase FIR filters where the number of taps is a multiple of parallelism. The proposed parallel FIR structures not only use fast convolution algorith...
2014, 36(5): 1158-1163.
doi: 10.3724/SP.J.1146.2013.00925
Abstract:
To utilize effectively the reporting slots in Cooperative Spectrum Sensing (CSS) and enhance the sensing performance, a novel CSS framework is designed. The core idea of the proposed framework is that, when a Secondary User (SU) is reporting the sens...
To utilize effectively the reporting slots in Cooperative Spectrum Sensing (CSS) and enhance the sensing performance, a novel CSS framework is designed. The core idea of the proposed framework is that, when a Secondary User (SU) is reporting the sens...
2014, 36(5): 1164-1170.
doi: 10.3724/SP.J.1146.2013.01054
Abstract:
In order to improve the robustness of the multi-cell multi-user multi-antenna downlink beamforming under the circumstance of considering the transceiver impairment and the imperfect channel information, two robust algorithms are proposed to solve the...
In order to improve the robustness of the multi-cell multi-user multi-antenna downlink beamforming under the circumstance of considering the transceiver impairment and the imperfect channel information, two robust algorithms are proposed to solve the...
2014, 36(5): 1171-1177.
doi: 10.3724/SP.J.1146.2013.01023
Abstract:
This paper analyzes the optimal density and power allocation for the D2D (Device-to-Device) communication in heterogeneous networks on multi-bands with target of maximizing the D2D transmission capacity. The heterogeneous networks contain one or seve...
This paper analyzes the optimal density and power allocation for the D2D (Device-to-Device) communication in heterogeneous networks on multi-bands with target of maximizing the D2D transmission capacity. The heterogeneous networks contain one or seve...
2014, 36(5): 1178-1183.
doi: 10.3724/SP.J.1146.2013.01048
Abstract:
In Massive MIMO-OFDM systems, the channel shows strong correlations in both spatial and frequency domain. Aiming at the problem that only spatial or frequency domain correlation is considered in most of the existing compressed feedback algorithms, a ...
In Massive MIMO-OFDM systems, the channel shows strong correlations in both spatial and frequency domain. Aiming at the problem that only spatial or frequency domain correlation is considered in most of the existing compressed feedback algorithms, a ...
2014, 36(5): 1184-1189.
doi: 10.3724/SP.J.1146.2013.00981
Abstract:
This paper presents a novel subcarrier combining based multicast resource scheduling algorithm for wireless OFDM multicast systems. By dividing subcarriers into different groups in advance, the algorithm avoids invalid subcarrier pairing, and adaptiv...
This paper presents a novel subcarrier combining based multicast resource scheduling algorithm for wireless OFDM multicast systems. By dividing subcarriers into different groups in advance, the algorithm avoids invalid subcarrier pairing, and adaptiv...
2014, 36(5): 1190-1195.
doi: 10.3724/SP.J.1146.2013.00990
Abstract:
To solve the issues of the high complexity and poor performance in the equalization of high order and partial response Continuous Phase Modulation (CPM) signals, a new framework of tilted phase CPM transmitted signals is designed from the perspective...
To solve the issues of the high complexity and poor performance in the equalization of high order and partial response Continuous Phase Modulation (CPM) signals, a new framework of tilted phase CPM transmitted signals is designed from the perspective...
2014, 36(5): 1196-1201.
doi: 10.3724/SP.J.1146.2013.01421
Abstract:
Based on OFDM amplify-and-forward cooperative relay system, in order to reduce the transmission bit error rate, while increasing the channel capacity and improving the usability, the paper presents a practical limited bits feedback precoding method w...
Based on OFDM amplify-and-forward cooperative relay system, in order to reduce the transmission bit error rate, while increasing the channel capacity and improving the usability, the paper presents a practical limited bits feedback precoding method w...
2014, 36(5): 1202-1208.
doi: 10.3724/SP.J.1146.2013.00454
Abstract:
Single-channel blind separation of several time-frequency overlapping communication signals, which has potential and wide application, is a hot and intractable point in the field of communication signal processing. The modulation type and source numb...
Single-channel blind separation of several time-frequency overlapping communication signals, which has potential and wide application, is a hot and intractable point in the field of communication signal processing. The modulation type and source numb...
2014, 36(5): 1209-1214.
doi: 10.3724/SP.J.1146.2013.01050
Abstract:
One of the key technologies in smart grid is an efficient, reliable and secure two-way communication system for meter data collection. Forming wireless mesh network with advanced electricity devices (smart meters), which have the communication capabi...
One of the key technologies in smart grid is an efficient, reliable and secure two-way communication system for meter data collection. Forming wireless mesh network with advanced electricity devices (smart meters), which have the communication capabi...
2014, 36(5): 1215-1220.
doi: 10.3724/SP.J.1146.2013.00948
Abstract:
The 3D cipher is a new block cipher proposed in CANS 2008. The design principles of 3D are built on the AES, but it is different from the other known block cipher as it uses the three dimensional structure. In this paper, some 6-round impossible diff...
The 3D cipher is a new block cipher proposed in CANS 2008. The design principles of 3D are built on the AES, but it is different from the other known block cipher as it uses the three dimensional structure. In this paper, some 6-round impossible diff...
2014, 36(5): 1221-1228.
doi: 10.3724/SP.J.1146.2013.01035
Abstract:
Erasure codes and regenerating codes can guarantee data reliability, but fail to provide data confidential when some nodes are observed by eavesdropper. Thus, two regenerating code schemes satisfying the security property against the eavesdropper are...
Erasure codes and regenerating codes can guarantee data reliability, but fail to provide data confidential when some nodes are observed by eavesdropper. Thus, two regenerating code schemes satisfying the security property against the eavesdropper are...
2014, 36(5): 1229-1234.
doi: 10.3724/SP.J.1146.2013.01030
Abstract:
LRU has been widely used in single-core processor, while Chip Multi-Processors (CMP) employ a large Last-Level Cache (LLC) which is shared among the multiple cores. With the increasement of the LLC capacity and associativity, and the grows of working...
LRU has been widely used in single-core processor, while Chip Multi-Processors (CMP) employ a large Last-Level Cache (LLC) which is shared among the multiple cores. With the increasement of the LLC capacity and associativity, and the grows of working...
2014, 36(5): 1235-1241.
doi: 10.3724/SP.J.1146.2013.00965
Abstract:
In this study, the virtual network mapping issue in network visualization area and its current research progress are reviewed, and the main issues in admission control and algorithm performance evaluation for existing virtual network mapping algorith...
In this study, the virtual network mapping issue in network visualization area and its current research progress are reviewed, and the main issues in admission control and algorithm performance evaluation for existing virtual network mapping algorith...
2014, 36(5): 1242-1246.
doi: 10.3724/SP.J.1146.2013.01262
Abstract:
Considering that the characteristic of Logistic chaos system varies in the relationship of the parameter, and the feature of that the relative entropy reflects the lack of equilibrium, this paper proposes a new method to estimate the characteristic o...
Considering that the characteristic of Logistic chaos system varies in the relationship of the parameter, and the feature of that the relative entropy reflects the lack of equilibrium, this paper proposes a new method to estimate the characteristic o...
2014, 36(5): 1247-1252.
doi: 10.3724/SP.J.1146.2013.01059
Abstract:
The design ideas and performance process of a super-wide band and two channels output circuit on a klystron are presented. A super-wide band two-channel double-gap coupled-cavity output circuit, whose bandwidth is over 550 MHz, is designed at S band ...
The design ideas and performance process of a super-wide band and two channels output circuit on a klystron are presented. A super-wide band two-channel double-gap coupled-cavity output circuit, whose bandwidth is over 550 MHz, is designed at S band ...
2014, 36(5): 1253-1257.
doi: 10.3724/SP.J.1146.2013.01297
Abstract:
The multijunction waveguide array antenna is one of the key components for plasma heating and current drive on EAST superconducting Tokamak device, and its structure performance determines the plasma current heating and drive efficiency. When the pla...
The multijunction waveguide array antenna is one of the key components for plasma heating and current drive on EAST superconducting Tokamak device, and its structure performance determines the plasma current heating and drive efficiency. When the pla...
2014, 36(5): 1258-1265.
doi: 10.3724/SP.J.1146.2013.01181
Abstract:
A stable Fixed-Outline Floorplanning (FOF) algorithm for soft module is proposed in this paper. It takes the Normalized Polish Expression (NPE) as a floorplan solution, using the shape curve adding algorithm and the interpolation technique to compute...
A stable Fixed-Outline Floorplanning (FOF) algorithm for soft module is proposed in this paper. It takes the Normalized Polish Expression (NPE) as a floorplan solution, using the shape curve adding algorithm and the interpolation technique to compute...
2014, 36(5): 1266-1270.
doi: 10.3724/SP.J.1146.2013.01042
Abstract:
In the Gaussian noise background, an algorithm is proposed to jointly estimate the multiuser DOA and self-calibrate the mutual coupling error for Uniform Linear Array (ULA). First, the generalized spatial feature vector of each user is estimated by u...
In the Gaussian noise background, an algorithm is proposed to jointly estimate the multiuser DOA and self-calibrate the mutual coupling error for Uniform Linear Array (ULA). First, the generalized spatial feature vector of each user is estimated by u...
