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2014 Vol. 36, No. 3
Display Method:
2014, 36(3): 509-515.
doi: 10.3724/SP.J.1146.2013.00656
Abstract:
Almost all the existing works on power allocation assume that the target Radar Cross Section (RCS) information is known a priori. In order to deal with the uncertainty of the target RCS, a robust power allocation algorithm for MultiStatic Radar Syste...
Almost all the existing works on power allocation assume that the target Radar Cross Section (RCS) information is known a priori. In order to deal with the uncertainty of the target RCS, a robust power allocation algorithm for MultiStatic Radar Syste...
2014, 36(3): 516-522.
doi: 10.3724/SP.J.1146.2013.00108
Abstract:
It is necessary to take mutual coupling of arrays into account in the research of array pattern synthesis for Opportunistic Array Radar (OAR) with a large number of antenna elements randomly distributed in the space. Active element patterns of a larg...
It is necessary to take mutual coupling of arrays into account in the research of array pattern synthesis for Opportunistic Array Radar (OAR) with a large number of antenna elements randomly distributed in the space. Active element patterns of a larg...
2014, 36(3): 523-528.
doi: 10.3724/SP.J.1146.2013.00365
Abstract:
For a model derived from the Geometrical Theory of Diffraction (GTD), a fast method based on spatial filtering is proposed to extract parameters of two-dimensional scattering centers. The proposed method utilizes spatial filtering process to decompos...
For a model derived from the Geometrical Theory of Diffraction (GTD), a fast method based on spatial filtering is proposed to extract parameters of two-dimensional scattering centers. The proposed method utilizes spatial filtering process to decompos...
2014, 36(3): 529-536.
doi: 10.3724/SP.J.1146.2013.00616
Abstract:
Template database is the key to radar automation target recognition based on High Resolution Range Profile (HRRP). Because of the complicate electromagnetic scattering in real target and background clutter, the traditional method based on the templat...
Template database is the key to radar automation target recognition based on High Resolution Range Profile (HRRP). Because of the complicate electromagnetic scattering in real target and background clutter, the traditional method based on the templat...
2014, 36(3): 537-544.
doi: 10.3724/SP.J.1146.2013.00613
Abstract:
The redundant calculation in Back-Projection Algorithm (BPA) is studied in Fast Factorized BPA (FFBPA). By dividing sub-apertures and accumulating signal coherently in polar format coordinate, image with high resolution is obtained. The progress of r...
The redundant calculation in Back-Projection Algorithm (BPA) is studied in Fast Factorized BPA (FFBPA). By dividing sub-apertures and accumulating signal coherently in polar format coordinate, image with high resolution is obtained. The progress of r...
2014, 36(3): 545-551.
doi: 10.3724/SP.J.1146.2013.00579
Abstract:
Image quality of azimuth multi-channel SAR is influenced by such factors as system parameters, array errors, and signal processing strategies. The image quality of azimuth multi-channel SAR is studied deeply. Firstly, the signal model is improved. Th...
Image quality of azimuth multi-channel SAR is influenced by such factors as system parameters, array errors, and signal processing strategies. The image quality of azimuth multi-channel SAR is studied deeply. Firstly, the signal model is improved. Th...
2014, 36(3): 552-558.
doi: 10.3724/SP.J.1146.2013.00676
Abstract:
To deal with the issue that the long time accumulation method is hard to be applied to the detection and parameter estimation of Linear Frequency Modulated Continuous Wave (LFMCW) signal, a novel algorithm combining the joint inter-frame correlation ...
To deal with the issue that the long time accumulation method is hard to be applied to the detection and parameter estimation of Linear Frequency Modulated Continuous Wave (LFMCW) signal, a novel algorithm combining the joint inter-frame correlation ...
2014, 36(3): 559-564.
doi: 10.3724/SP.J.1146.2013.00829
Abstract:
Costas-coded Frequency Hopping (FH) signal is very sensitive to velocity changes. As a result, in multi- targets scenario, sidelobe pedestal arisen induced by inaccuracy compensation will make possible masking if one target is much stronger than the ...
Costas-coded Frequency Hopping (FH) signal is very sensitive to velocity changes. As a result, in multi- targets scenario, sidelobe pedestal arisen induced by inaccuracy compensation will make possible masking if one target is much stronger than the ...
2014, 36(3): 565-570.
doi: 10.3724/SP.J.1146.2013.00648
Abstract:
For the issue of the bad Direction Of Arrival (DOA) estimation accuracy entailed by not utilizing the transmitted polarization information in electromagnetic vector sensor MIMO radar, a transmitted polarization optimization algorithm is proposed base...
For the issue of the bad Direction Of Arrival (DOA) estimation accuracy entailed by not utilizing the transmitted polarization information in electromagnetic vector sensor MIMO radar, a transmitted polarization optimization algorithm is proposed base...
2014, 36(3): 571-576.
doi: 10.3724/SP.J.1146.2013.00604
Abstract:
Based on Digital Elevation Mode (DEM) data, satellite orbit and baseline information, a kind of fast interferometric phase simulation method is investigated and presented for spaceborne multi-baseline InSAR system. By taking advantage of forward geoc...
Based on Digital Elevation Mode (DEM) data, satellite orbit and baseline information, a kind of fast interferometric phase simulation method is investigated and presented for spaceborne multi-baseline InSAR system. By taking advantage of forward geoc...
2014, 36(3): 577-582.
doi: 10.3724/SP.J.1146.2013.00638
Abstract:
To reach a compromise between efficient dynamic performance and high tracking accuracy of carrier tracking loop in high-dynamic circumstance which results in large Doppler frequency and Doppler frequency rate-of-change, a fast maximum likelihood esti...
To reach a compromise between efficient dynamic performance and high tracking accuracy of carrier tracking loop in high-dynamic circumstance which results in large Doppler frequency and Doppler frequency rate-of-change, a fast maximum likelihood esti...
2014, 36(3): 583-588.
doi: 10.3724/SP.J.1146.2013.00649
Abstract:
This paper introduces the principle of?signal detection by Singular Value Decomposition (SVD), and discusses the singular values distribution characteristics of the transient signal and Gauss white noise which received from electromagnetic-pulse alon...
This paper introduces the principle of?signal detection by Singular Value Decomposition (SVD), and discusses the singular values distribution characteristics of the transient signal and Gauss white noise which received from electromagnetic-pulse alon...
2014, 36(3): 589-594.
doi: 10.3724/SP.J.1146.2013.00149
Abstract:
The method of Direction-Of-Arrival (DOA) estimation of array signals based on Compressive Sensing (CS) theory has advantages such as fewer snapshots requirement and the capacity of dealing with the coherent sources. Exploiting the CS theory on DOA es...
The method of Direction-Of-Arrival (DOA) estimation of array signals based on Compressive Sensing (CS) theory has advantages such as fewer snapshots requirement and the capacity of dealing with the coherent sources. Exploiting the CS theory on DOA es...
2014, 36(3): 595-600.
doi: 10.3724/SP.J.1146.2013.00434
Abstract:
In order to extract effectively the characteristics of each condition vibration signal for rolling bearing, a sensitive Intrinsic Mode Function (IMF) selection algorithm which based on Ensemble Empirical Mode Decomposition (EEMD) is proposed. First, ...
In order to extract effectively the characteristics of each condition vibration signal for rolling bearing, a sensitive Intrinsic Mode Function (IMF) selection algorithm which based on Ensemble Empirical Mode Decomposition (EEMD) is proposed. First, ...
2014, 36(3): 601-609.
doi: 10.3724/SP.J.1146.2013.00652
Abstract:
For the issue of multiple moving targets segmentation in intelligent monitoring system, an adaptive splitting and merging clustering algorithm of the moving target segmentation is proposed. First, it uses the time-domain information for foreground im...
For the issue of multiple moving targets segmentation in intelligent monitoring system, an adaptive splitting and merging clustering algorithm of the moving target segmentation is proposed. First, it uses the time-domain information for foreground im...
2014, 36(3): 610-616.
doi: 10.3724/SP.J.1146.2013.00554
Abstract:
To tackle the problem of single labeled image person face recognition, a subspace label propagation and regularized discriminant analysis based semi-supervised dimensionality reduction method is proposed in this paper. First, a label propagation meth...
To tackle the problem of single labeled image person face recognition, a subspace label propagation and regularized discriminant analysis based semi-supervised dimensionality reduction method is proposed in this paper. First, a label propagation meth...
2014, 36(3): 617-623.
doi: 10.3724/SP.J.1146.2013.00974
Abstract:
To solve the issue of background interferences on the scene text automatic localization algorithm, a scheme of background suppression for scene text is proposed, which utilizes characteristic of visual saliency to combine histogram of oriented gradie...
To solve the issue of background interferences on the scene text automatic localization algorithm, a scheme of background suppression for scene text is proposed, which utilizes characteristic of visual saliency to combine histogram of oriented gradie...
2014, 36(3): 624-630.
doi: 10.3724/SP.J.1146.2013.01155
Abstract:
A new local saliency texture descriptor named Local Ternary Number (LTN) is defined in this paper, and a new object tracking method combining LTN with hue information is proposed. Derived from Local Similarity Number (LSN), the new local saliency tex...
A new local saliency texture descriptor named Local Ternary Number (LTN) is defined in this paper, and a new object tracking method combining LTN with hue information is proposed. Derived from Local Similarity Number (LSN), the new local saliency tex...
2014, 36(3): 631-638.
doi: 10.3724/SP.J.1146.2013.00671
Abstract:
The traditional image steganalysis methods are based on the features extracted from the whole image, while ignoring the differences of the image content. A new JPEG steganalysis algorithm using quad-treebased segmentation is proposed. First, the give...
The traditional image steganalysis methods are based on the features extracted from the whole image, while ignoring the differences of the image content. A new JPEG steganalysis algorithm using quad-treebased segmentation is proposed. First, the give...
2014, 36(3): 639-644.
doi: 10.3724/SP.J.1146.2013.00758
Abstract:
In order to improve the passive positioning accuracy of three-element array, a modified cross- spectral algorithm is proposed for time delay difference estimation. The improved method solves phase ambiguity issue in conventional the cross-spectral me...
In order to improve the passive positioning accuracy of three-element array, a modified cross- spectral algorithm is proposed for time delay difference estimation. The improved method solves phase ambiguity issue in conventional the cross-spectral me...
2014, 36(3): 645-649.
doi: 10.3724/SP.J.1146.2013.00818
Abstract:
Proxy re-signature is an important tool for simplifying key management, and can be used to prove a proof for a path, manage group signatures, simplify certificate management and so on. Currently, proxy re- signature schemes are based on large integer...
Proxy re-signature is an important tool for simplifying key management, and can be used to prove a proof for a path, manage group signatures, simplify certificate management and so on. Currently, proxy re- signature schemes are based on large integer...
2014, 36(3): 650-654.
doi: 10.3724/SP.J.1146.2013.00751
Abstract:
A new class of generalized cyclotomic sequence with period2pq is proposed in this paper, wherep andq are distinct primes. A formula for computing the linear complexity of the proposed sequence is also given. With the knowledge of the support set of t...
A new class of generalized cyclotomic sequence with period2pq is proposed in this paper, wherep andq are distinct primes. A formula for computing the linear complexity of the proposed sequence is also given. With the knowledge of the support set of t...
2014, 36(3): 655-661.
doi: 10.3724/SP.J.1146.2013.00659
Abstract:
Without the priori information of interference system, iterative detection algorithm based on minimum- error-rate threshold can make a good performance. In practice, however, accurate noise estimation is difficult to achieve because of low SNR, which...
Without the priori information of interference system, iterative detection algorithm based on minimum- error-rate threshold can make a good performance. In practice, however, accurate noise estimation is difficult to achieve because of low SNR, which...
2014, 36(3): 662-668.
doi: 10.3724/SP.J.1146.2013.00717
Abstract:
Co-time Co-frequency Full-Duplex (CCFD) radio transmission will cause a strong self-interference in its receiver. To ensure the undistorted transmission in the Radio Frequency (RF) channel and effective sampling of the desired signal, the Self-Interf...
Co-time Co-frequency Full-Duplex (CCFD) radio transmission will cause a strong self-interference in its receiver. To ensure the undistorted transmission in the Radio Frequency (RF) channel and effective sampling of the desired signal, the Self-Interf...
2014, 36(3): 669-675.
doi: 10.3724/SP.J.1146.2013.00509
Abstract:
For short burst communication systems, the position and the number of pilot symbols have a great impact on frequency estimation accuracy and estimation range in time-domain correlation frequency estimation algorithm. So a frequency estimation algorit...
For short burst communication systems, the position and the number of pilot symbols have a great impact on frequency estimation accuracy and estimation range in time-domain correlation frequency estimation algorithm. So a frequency estimation algorit...
2014, 36(3): 676-682.
doi: 10.3724/SP.J.1146.2013.00551
Abstract:
According to the characteristics of the store and forward LEO communication satellite constellation and the issue that the traditional constellation design methods can not optimizes simultaneously the coverage performance and network performance, a n...
According to the characteristics of the store and forward LEO communication satellite constellation and the issue that the traditional constellation design methods can not optimizes simultaneously the coverage performance and network performance, a n...
2014, 36(3): 683-689.
doi: 10.3724/SP.J.1146.2013.00722
Abstract:
A SNR estimator based on packet error ratio is proposed，and its statistical property is analyzed for the interference problem in multiple readers environment. An adaptive weighted proportion fairness power allocation algorithm is proposed which can i...
A SNR estimator based on packet error ratio is proposed，and its statistical property is analyzed for the interference problem in multiple readers environment. An adaptive weighted proportion fairness power allocation algorithm is proposed which can i...
2014, 36(3): 690-695.
doi: 10.3724/SP.J.1146.2013.00667
Abstract:
In environmental monitoring applications, there are often various objects to be monitored by sensor networks. In this scenario, each heterogeneous node carries some different sensors, and the coverage of multiple areas is required in order to monitor...
In environmental monitoring applications, there are often various objects to be monitored by sensor networks. In this scenario, each heterogeneous node carries some different sensors, and the coverage of multiple areas is required in order to monitor...
2014, 36(3): 696-702.
doi: 10.3724/SP.J.1146.2013.00730
Abstract:
For the problem of coverage blind area generated by randomly deploying the heterogeneous nodes in the initial stage, and inspired by simple random sampling in probability theory and optimization algorithm, a coverage optimization algorithm for hetero...
For the problem of coverage blind area generated by randomly deploying the heterogeneous nodes in the initial stage, and inspired by simple random sampling in probability theory and optimization algorithm, a coverage optimization algorithm for hetero...
2014, 36(3): 703-707.
doi: 10.3724/SP.J.1146.2013.00559
Abstract:
To motivate nodes to forward packets in Ad hoc networks under the condition of imperfect information, repeated game is often used to model the process of sequential interactions between nodes and the Bellman equations is applied to design strategy ba...
To motivate nodes to forward packets in Ad hoc networks under the condition of imperfect information, repeated game is often used to model the process of sequential interactions between nodes and the Bellman equations is applied to design strategy ba...
2014, 36(3): 708-714.
doi: 10.3724/SP.J.1146.2013.00755
Abstract:
The network virtualization requires real-time monitoring of the substrate network resources state. An efficient monitoring policy should reduce the transmission delay and bandwidth of state information collection. For this objective, a resource monit...
The network virtualization requires real-time monitoring of the substrate network resources state. An efficient monitoring policy should reduce the transmission delay and bandwidth of state information collection. For this objective, a resource monit...
2014, 36(3): 715-720.
doi: 10.3724/SP.J.1146.2013.00534
Abstract:
The matrix factorization is one of the most powerful tools in collaborative filtering recommender systems. The Bayesian Probabilistic Matrix Factorization (BPMF) model has advantages of high prediction accuracy, but can not capture non-linear relatio...
The matrix factorization is one of the most powerful tools in collaborative filtering recommender systems. The Bayesian Probabilistic Matrix Factorization (BPMF) model has advantages of high prediction accuracy, but can not capture non-linear relatio...
2014, 36(3): 721-727.
doi: 10.3724/SP.J.1146.2013.00636
Abstract:
Considering the color aliasing caused by down-sampling in display systems, a novel color anti-aliasing filtering method based on the subpixel arrangements of displays is proposed. Due to the shape and the area of color aliasing are closely related wi...
Considering the color aliasing caused by down-sampling in display systems, a novel color anti-aliasing filtering method based on the subpixel arrangements of displays is proposed. Due to the shape and the area of color aliasing are closely related wi...
2014, 36(3): 728-733.
doi: 10.3724/SP.J.1146.2013.00587
Abstract:
For the complex structures, the narrow space and the large quantity of equipments in the helicopter, a complicated electromagnetic environment makes effects in the avionics platform. For the purpose of finding the ElectroMagnetic Interference (EMI) c...
For the complex structures, the narrow space and the large quantity of equipments in the helicopter, a complicated electromagnetic environment makes effects in the avionics platform. For the purpose of finding the ElectroMagnetic Interference (EMI) c...
2014, 36(3): 734-738.
doi: 10.3724/SP.J.1146.2013.00707
Abstract:
For the issue that escort jamming in main-lobe can not be countered by radar, a main-lobe jamming suppression technique about multistatic radar is studied, and the Adaptive Main-lobe Jamming Cancellation Algorithm based on Block Preconditioning (BP-A...
For the issue that escort jamming in main-lobe can not be countered by radar, a main-lobe jamming suppression technique about multistatic radar is studied, and the Adaptive Main-lobe Jamming Cancellation Algorithm based on Block Preconditioning (BP-A...
2014, 36(3): 739-743.
doi: 10.3724/SP.J.1146.2013.01178
Abstract:
This paper proposes a novel and low-complexity adaptive Chase iterative decoding algorithm for Turbo Product Codes (TPCs). Different from the previous reported results, during decoding, the new adaptive algorithm is based on the statistics of the num...
This paper proposes a novel and low-complexity adaptive Chase iterative decoding algorithm for Turbo Product Codes (TPCs). Different from the previous reported results, during decoding, the new adaptive algorithm is based on the statistics of the num...
2014, 36(3): 744-748.
doi: 10.3724/SP.J.1146.2013.00777
Abstract:
To deal with the degradation of wireless sensor network routing efficiency caused by voids, Energy Efficiency Multi-channel Coordination Routing algorithm based on 3D cell space (3D-EEMCR) is presented in this paper. According to the energy consumpti...
To deal with the degradation of wireless sensor network routing efficiency caused by voids, Energy Efficiency Multi-channel Coordination Routing algorithm based on 3D cell space (3D-EEMCR) is presented in this paper. According to the energy consumpti...
2014, 36(3): 749-753.
doi: 10.3724/SP.J.1146.2013.00598
Abstract:
A novel Opportunistic-Network-Coding based Weighted broadcasting Retransmission (WONCR) approach is proposed to deal with the problem of data dissemination scheme based on opportunistic network coding in wireless broadcasting networks, which are unde...
A novel Opportunistic-Network-Coding based Weighted broadcasting Retransmission (WONCR) approach is proposed to deal with the problem of data dissemination scheme based on opportunistic network coding in wireless broadcasting networks, which are unde...
2014, 36(3): 754-757.
doi: 10.3724/SP.J.1146.2013.00566
Abstract:
In order to improve the emission performance of cathodes to meet the demands of new type devices, this paper develops a new-type scandate cathode coated with W+BaO-Sc2O3-SrO film prepared by Pulse Laser Deposition (PLD) technology. The experiment obt...
In order to improve the emission performance of cathodes to meet the demands of new type devices, this paper develops a new-type scandate cathode coated with W+BaO-Sc2O3-SrO film prepared by Pulse Laser Deposition (PLD) technology. The experiment obt...
2014, 36(3): 758-762.
doi: 10.3724/SP.J.1146.2013.00704
Abstract:
A new pseudo natural sampling algorithm is proposed in this paper for correcting the harmonic distortion produced by switching signal modulation in Uniform sampled Pulse Width Modulation (UPWM) digital class D power amplifiers. This algorithm combine...
A new pseudo natural sampling algorithm is proposed in this paper for correcting the harmonic distortion produced by switching signal modulation in Uniform sampled Pulse Width Modulation (UPWM) digital class D power amplifiers. This algorithm combine...
