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2013 Vol. 35, No. 3
Display Method:
2013, 35(3): 509-515.
doi: 10.3724/SP.J.1146.2012.00992
Abstract:
The seriously expended clutter Doppler and finite sample supports are the problem of high velocity radar platform, and the performance of conventional Space Time Adaptive Processing (STAP) will degrade due to covariance matrix error or inaccurate tar...
The seriously expended clutter Doppler and finite sample supports are the problem of high velocity radar platform, and the performance of conventional Space Time Adaptive Processing (STAP) will degrade due to covariance matrix error or inaccurate tar...
2013, 35(3): 516-523.
doi: 10.3724/SP.J.1146.2012.00444
Abstract:
Generally the problem about Doppler Blind Zone (DBZ) occurs in airborne early warning radar. In the process of target tracking, the DBZ can cause track termination and new track initiation easily. Considering the problem, a target tracking method bas...
Generally the problem about Doppler Blind Zone (DBZ) occurs in airborne early warning radar. In the process of target tracking, the DBZ can cause track termination and new track initiation easily. Considering the problem, a target tracking method bas...
2013, 35(3): 524-531.
doi: 10.3724/SP.J.1146.2012.00844
Abstract:
In order to set the detection threshold in real time according to the demanded false alarm probability for Bayesian track-before-detect under Neyman-Pearson criterion, this paper derives the closed-form solution of the detection threshold in white co...
In order to set the detection threshold in real time according to the demanded false alarm probability for Bayesian track-before-detect under Neyman-Pearson criterion, this paper derives the closed-form solution of the detection threshold in white co...
2013, 35(3): 532-536.
doi: 10.3724/SP.J.1146.2012.00857
Abstract:
A method of designing constant modulus waveforms with ultra-low range sidelobe in specified intervals is presented. This kind of waveform can be used in radar, sonar, and communication systems with transmit adaptivity to suppress range sidelobe maski...
A method of designing constant modulus waveforms with ultra-low range sidelobe in specified intervals is presented. This kind of waveform can be used in radar, sonar, and communication systems with transmit adaptivity to suppress range sidelobe maski...
2013, 35(3): 537-544.
doi: 10.3724/SP.J.1146.2012.00978
Abstract:
Feature parameters estimation for ballistic targets is the basis of target recognition. Because of the difficulty to estimate the precession and structure parameters of a cone-cylinder target jointly without prior knowledge of parameters, a new metho...
Feature parameters estimation for ballistic targets is the basis of target recognition. Because of the difficulty to estimate the precession and structure parameters of a cone-cylinder target jointly without prior knowledge of parameters, a new metho...
2013, 35(3): 545-551.
doi: 10.3724/SP.J.1146.2012.00944
Abstract:
In the frequency-stepped chirp signal, the frequency spectrum overlap between the neighboring sub pulses would lead to grating lobes in the result of range compression. The weaker points may be masked or distorted by the grating lobes of strong point...
In the frequency-stepped chirp signal, the frequency spectrum overlap between the neighboring sub pulses would lead to grating lobes in the result of range compression. The weaker points may be masked or distorted by the grating lobes of strong point...
2013, 35(3): 552-558.
doi: 10.3724/SP.J.1146.2012.01016
Abstract:
Side-looking three-Dimensional (3D) imaging of three-aperture sparse array Synthetic Aperture Radar (SAR) based on Compressed Sensing (CS) is investigated in this paper. Using the sparse array structure in cross- track direction formed by three apert...
Side-looking three-Dimensional (3D) imaging of three-aperture sparse array Synthetic Aperture Radar (SAR) based on Compressed Sensing (CS) is investigated in this paper. Using the sparse array structure in cross- track direction formed by three apert...
2013, 35(3): 559-567.
doi: 10.3724/SP.J.1146.2012.00850
Abstract:
InSAR motion compensation is a key step to obtain high-precision product. The effect of MOtion COmpensation (MOCO) errors on the precision of airborne dual-antenna InSAR is analysed. First, the MOCO residual errors are deduced on condition that the r...
InSAR motion compensation is a key step to obtain high-precision product. The effect of MOtion COmpensation (MOCO) errors on the precision of airborne dual-antenna InSAR is analysed. First, the MOCO residual errors are deduced on condition that the r...
2013, 35(3): 568-574.
doi: 10.3724/SP.J.1146.2012.00891
Abstract:
In conventional radar system, the resolution is constrained by Nyquist sampling rate. A large amount of data is created under the high-resolution requirement. Compressive Sensing (CS) relieves the demand of A/D converter and the capacity of memories....
In conventional radar system, the resolution is constrained by Nyquist sampling rate. A large amount of data is created under the high-resolution requirement. Compressive Sensing (CS) relieves the demand of A/D converter and the capacity of memories....
2013, 35(3): 575-580.
doi: 10.3724/SP.J.1146.2012.00939
Abstract:
Digital Terrestrial Multimedia Broadcasting (DTMB) is announced as the Chinese own independent intellectual proprietary digital terrestrial TV standard. A passive radar system is introduced for target detection based on DTMB. The principle, key techn...
Digital Terrestrial Multimedia Broadcasting (DTMB) is announced as the Chinese own independent intellectual proprietary digital terrestrial TV standard. A passive radar system is introduced for target detection based on DTMB. The principle, key techn...
2013, 35(3): 581-588.
doi: 10.3724/SP.J.1146.2012.00903
Abstract:
For passive radar, the computation cost of traditional 2-dimentional coherent integration (ambiguity function) is high, which makes it hard to perform in real-time processing. And range migration may occur during the integration time, leading to a Si...
For passive radar, the computation cost of traditional 2-dimentional coherent integration (ambiguity function) is high, which makes it hard to perform in real-time processing. And range migration may occur during the integration time, leading to a Si...
2013, 35(3): 589-594.
doi: 10.3724/SP.J.1146.2012.00900
Abstract:
By calculating the cross ambiguity function of the reference signal and the echo signal based on the passive coherent location technologies, passive radar detects the distance and speed of the target. However, it is difficult to meet real-time requir...
By calculating the cross ambiguity function of the reference signal and the echo signal based on the passive coherent location technologies, passive radar detects the distance and speed of the target. However, it is difficult to meet real-time requir...
2013, 35(3): 595-600.
doi: 10.3724/SP.J.1146.2012.00630
Abstract:
The spectrum of the clutter is spatially-temporally coupled in the airborne MIMO radar. Based on the knowledge that the location of the ground clutter in angle-Doppler domain is mainly dependent on the velocity of the airplane and the radar parameter...
The spectrum of the clutter is spatially-temporally coupled in the airborne MIMO radar. Based on the knowledge that the location of the ground clutter in angle-Doppler domain is mainly dependent on the velocity of the airplane and the radar parameter...
2013, 35(3): 601-607.
doi: 10.3724/SP.J.1146.2012.01072
Abstract:
Focusing on the radar allocation for stealth targets detection and tracking issue in air-defense radar network, a novel collaborative detection and tracking algorithm that combines Binary Particle Swarm Optimization (BPSO) and particle filtering to c...
Focusing on the radar allocation for stealth targets detection and tracking issue in air-defense radar network, a novel collaborative detection and tracking algorithm that combines Binary Particle Swarm Optimization (BPSO) and particle filtering to c...
Chaotic Analog-to-information Conversion: Sparse Signal Reconstruction with Multiple Shooting Method
2013, 35(3): 608-613.
doi: 10.3724/SP.J.1146.2012.00905
Abstract:
Chaotic Compressive Sensing (CS) is a nonlinear compressive sensing theory which utilizes the randomness-like characteristic of chaos systems to measure sparse signals. This paper focuses on the chaotic compressive sensing for the acquisition and rec...
Chaotic Compressive Sensing (CS) is a nonlinear compressive sensing theory which utilizes the randomness-like characteristic of chaos systems to measure sparse signals. This paper focuses on the chaotic compressive sensing for the acquisition and rec...
2013, 35(3): 614-621.
doi: 10.3724/SP.J.1146.2012.00892
Abstract:
In order to enhance the global optimization capability and quorum sensing mechanism of Bacterial Foraging Optimization (BFO) algorithm, a novel Bacterial Foraging Optimization algorithm with Quantum Behavior (QBFO) is proposed. In this method, the ba...
In order to enhance the global optimization capability and quorum sensing mechanism of Bacterial Foraging Optimization (BFO) algorithm, a novel Bacterial Foraging Optimization algorithm with Quantum Behavior (QBFO) is proposed. In this method, the ba...
2013, 35(3): 622-626.
doi: 10.3724/SP.J.1146.2012.01218
Abstract:
This paper presents a novel multi-instance multi-label image classification method based on sparse coding and ensemble learning. First, a dictionary is learned based on all the instances in the training bags, and the sparse coding coefficient of each...
This paper presents a novel multi-instance multi-label image classification method based on sparse coding and ensemble learning. First, a dictionary is learned based on all the instances in the training bags, and the sparse coding coefficient of each...
2013, 35(3): 627-632.
doi: 10.3724/SP.J.1146.2012.00016
Abstract:
The Citation-kNN algorithm improves traditional kNN algorithm and can be applied to solve multi- instance learning issue. But its 0-1 decision strategy has some limitations. To overcome this issue, the locally-weighted Citation-kNN algorithm is prese...
The Citation-kNN algorithm improves traditional kNN algorithm and can be applied to solve multi- instance learning issue. But its 0-1 decision strategy has some limitations. To overcome this issue, the locally-weighted Citation-kNN algorithm is prese...
2013, 35(3): 633-638.
doi: 10.3724/SP.J.1146.2012.00793
Abstract:
As a dimensionality reduction algorithm, Local Fisher Discriminant Analysis (LFDA) is faced with two problems: (1) how to select the favorable neighborhood size which may have effect on the optimal projection direction and (2) the neglect of neighbor...
As a dimensionality reduction algorithm, Local Fisher Discriminant Analysis (LFDA) is faced with two problems: (1) how to select the favorable neighborhood size which may have effect on the optimal projection direction and (2) the neglect of neighbor...
2013, 35(3): 639-644.
doi: 10.3724/SP.J.1146.2012.00866
Abstract:
The surgery assisted robotic tool helps the surgeon to cancel the relative motion between the beating heart and robotic tool, keeping the heart beating during the surgery, which will lessen post surgery complications for patients. Due to the highly i...
The surgery assisted robotic tool helps the surgeon to cancel the relative motion between the beating heart and robotic tool, keeping the heart beating during the surgery, which will lessen post surgery complications for patients. Due to the highly i...
2013, 35(3): 645-651.
doi: 10.3724/SP.J.1146.2012.00673
Abstract:
Considering the complexity and the accuracy, an improved affinity propagation clustering algorithm Semi-supervised Affinity Propagation clustering algorithm based on Stratified Combination (SAP-SC) is proposed. In order to make the operation simplifi...
Considering the complexity and the accuracy, an improved affinity propagation clustering algorithm Semi-supervised Affinity Propagation clustering algorithm based on Stratified Combination (SAP-SC) is proposed. In order to make the operation simplifi...
2013, 35(3): 652-657.
doi: 10.3724/SP.J.1146.2012.00831
Abstract:
In non-destructive testing, ultrasonic echo is often an overlapping multi-echoes signal with noise. A time- frequency estimation algorithm for ultrasonic echo signal baesd on Gabor transform is presented according to the characteristics of time-frequ...
In non-destructive testing, ultrasonic echo is often an overlapping multi-echoes signal with noise. A time- frequency estimation algorithm for ultrasonic echo signal baesd on Gabor transform is presented according to the characteristics of time-frequ...
2013, 35(3): 658-664.
doi: 10.3724/SP.J.1146.2012.00896
Abstract:
Nonsinusoidal orthogonal modulation signal in time-domain has high peak-to-average power ratio, so it is vulnerable to the nonlinearity of power amplifier. To relieve this affection, a non-iterative look-up table predistortion method based on wavefor...
Nonsinusoidal orthogonal modulation signal in time-domain has high peak-to-average power ratio, so it is vulnerable to the nonlinearity of power amplifier. To relieve this affection, a non-iterative look-up table predistortion method based on wavefor...
2013, 35(3): 665-670.
doi: 10.3724/SP.J.1146.2012.00860
Abstract:
Channel estimation which based on Compressed Sensing (CS) can achieve the purpose of reducing pilots, but in the transformation of channel matrix from frequency-time domain to delay-Doppler sparse domain exists spectral leakage phenomenon which affec...
Channel estimation which based on Compressed Sensing (CS) can achieve the purpose of reducing pilots, but in the transformation of channel matrix from frequency-time domain to delay-Doppler sparse domain exists spectral leakage phenomenon which affec...
2013, 35(3): 671-676.
doi: 10.3724/SP.J.1146.2012.00995
Abstract:
The digital channelizer processing on-board is adopted by the broadband flexible transponder, which is the next generation communication satellite payload. This payload can flexibly transpond signals within any frequency band and any bandwidth, which...
The digital channelizer processing on-board is adopted by the broadband flexible transponder, which is the next generation communication satellite payload. This payload can flexibly transpond signals within any frequency band and any bandwidth, which...
2013, 35(3): 677-682.
doi: 10.3724/SP.J.1146.2012.00820
Abstract:
Turbo equalization is the effective method to overcome multipath fading and eliminate Inter-Symbol Interference (ISI) for underwater acoustic coherent communications. In practice, turbo equalization estimates information of time-varying and multi-pat...
Turbo equalization is the effective method to overcome multipath fading and eliminate Inter-Symbol Interference (ISI) for underwater acoustic coherent communications. In practice, turbo equalization estimates information of time-varying and multi-pat...
2013, 35(3): 683-688.
doi: 10.3724/SP.J.1146.2012.00948
Abstract:
Frequency-domain equalization for single-carrier transmission systems provides an attractive design alterative to time domain equalization because of more efficient calculation. In this paper an Iterative Block Decision Feedback Equalization (IB-DFE)...
Frequency-domain equalization for single-carrier transmission systems provides an attractive design alterative to time domain equalization because of more efficient calculation. In this paper an Iterative Block Decision Feedback Equalization (IB-DFE)...
2013, 35(3): 689-695.
doi: 10.3724/SP.J.1146.2012.00811
Abstract:
Search patterns have an important influence on both searching speed and encoding quality of Block- based Motion estimation Algorithms (BMA). A fast block-based motion estimation algorithm utilizing a multi- pattern switching method is proposed, durin...
Search patterns have an important influence on both searching speed and encoding quality of Block- based Motion estimation Algorithms (BMA). A fast block-based motion estimation algorithm utilizing a multi- pattern switching method is proposed, durin...
2013, 35(3): 696-702.
doi: 10.3724/SP.J.1146.2012.00901
Abstract:
In modern wireless networks, Adaptive Modulation and Coding (AMC) is one of effective technologies adopted in physical layer to overcome complex wireless channel and improve quality of service of system. In this paper, the relation between wireless c...
In modern wireless networks, Adaptive Modulation and Coding (AMC) is one of effective technologies adopted in physical layer to overcome complex wireless channel and improve quality of service of system. In this paper, the relation between wireless c...
2013, 35(3): 703-708.
doi: 10.3724/SP.J.1146.2012.00973
Abstract:
Since the traditional network architectures faced the problems of structural rigidity, functional simplification and poor controllability, the reconfigurable network is designed as a new kind of network architecture. In the reconfigurable network, tr...
Since the traditional network architectures faced the problems of structural rigidity, functional simplification and poor controllability, the reconfigurable network is designed as a new kind of network architecture. In the reconfigurable network, tr...
2013, 35(3): 709-714.
doi: 10.3724/SP.J.1146.2012.00890
Abstract:
To increase the end-to-end system efficiency with a flexible QoS (Quality of Service) class mapping scheme for transporting multimedia traffic over heterogeneous networks, by analyzing current QoS class mapping schemes which lack flexibility without ...
To increase the end-to-end system efficiency with a flexible QoS (Quality of Service) class mapping scheme for transporting multimedia traffic over heterogeneous networks, by analyzing current QoS class mapping schemes which lack flexibility without ...
2013, 35(3): 715-720.
doi: 10.3724/SP.J.1146.2012.00935
Abstract:
To deal with dynamic routing in wireless sensor networks and keep the residual-energy balance of each sensor node, an opportunistic routing algorithm is proposed. At first, based on the second law of thermodynamics and the model of entropy, an opport...
To deal with dynamic routing in wireless sensor networks and keep the residual-energy balance of each sensor node, an opportunistic routing algorithm is proposed. At first, based on the second law of thermodynamics and the model of entropy, an opport...
2013, 35(3): 721-727.
doi: 10.3724/SP.J.1146.2012.01013
Abstract:
Considering the disadvantage of the high complexity and ignoring signals structural sparsity in A* Orthogonal Matching Pursuit (A*OMP) algorithm, a block A*OMP algorithm is proposed for block-sparse signals, and it is improved to solve the joint reco...
Considering the disadvantage of the high complexity and ignoring signals structural sparsity in A* Orthogonal Matching Pursuit (A*OMP) algorithm, a block A*OMP algorithm is proposed for block-sparse signals, and it is improved to solve the joint reco...
2013, 35(3): 728-734.
doi: 10.3724/SP.J.1146.2012.00970
Abstract:
Due to marine dynamics, sensor nodes of Underwater Wireless Sensor Networks (UWSN) are always in a state of constant motion. Together with low propagation speed of acoustic signal, nodes mobility brings challenge to UWSN MAC. A motion model of underw...
Due to marine dynamics, sensor nodes of Underwater Wireless Sensor Networks (UWSN) are always in a state of constant motion. Together with low propagation speed of acoustic signal, nodes mobility brings challenge to UWSN MAC. A motion model of underw...
2013, 35(3): 735-741.
doi: 10.3724/SP.J.1146.2012.00930
Abstract:
For meeting the high security and high efficiency of cryptography schemes in Cloud Computing, a security enhanced cryptographic mode of operation named Cipher FeedBack one Block one Key (CFB-BK) is proposed, and this mode is implemented based on the ...
For meeting the high security and high efficiency of cryptography schemes in Cloud Computing, a security enhanced cryptographic mode of operation named Cipher FeedBack one Block one Key (CFB-BK) is proposed, and this mode is implemented based on the ...
2013, 35(3): 742-748.
doi: 10.3724/SP.J.1146.2012.00878
Abstract:
Model construction is the basis of model checking. State explosion can not be avoided during building model for microcontroller code. Because the state number of generated model is related to code size, the number of state can be reduced through simp...
Model construction is the basis of model checking. State explosion can not be avoided during building model for microcontroller code. Because the state number of generated model is related to code size, the number of state can be reduced through simp...
2013, 35(3): 749-753.
doi: 10.3724/SP.J.1146.2012.00915
Abstract:
In order to figure out the distortion of radiation pattern, which is caused by backward leakage, second contamination and output boundary truncation, a novel Local Waveguide Port (LWP) technique based on FDTD technique is proposed in this paper. And ...
In order to figure out the distortion of radiation pattern, which is caused by backward leakage, second contamination and output boundary truncation, a novel Local Waveguide Port (LWP) technique based on FDTD technique is proposed in this paper. And ...
2013, 35(3): 754-758.
doi: 10.3724/SP.J.1146.2012.00923
Abstract:
In recent years, the global wind power installed capacity is growing exponentially. However, current Moving Target Detector (MTD) of primary surveillance radar can not suppress the wind farm clutter. The non-zero frequency components of the wind farm...
In recent years, the global wind power installed capacity is growing exponentially. However, current Moving Target Detector (MTD) of primary surveillance radar can not suppress the wind farm clutter. The non-zero frequency components of the wind farm...
2013, 35(3): 759-762.
doi: 10.3724/SP.J.1146.2012.01177
Abstract:
Based on Wyner-Ziv (WZ) codec structure, a four-channel distributed codec methods for Bayer pattern image is proposed. First, Bayer pattern image is separated and converted into four component image, and each component image is transformed into frequ...
Based on Wyner-Ziv (WZ) codec structure, a four-channel distributed codec methods for Bayer pattern image is proposed. First, Bayer pattern image is separated and converted into four component image, and each component image is transformed into frequ...
