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2012 Vol. 34, No. 2
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2012, 34(2): 255-260.
doi: 10.3724/SP.J.1146.2011.00553
Abstract:
A vegetation parameters inversion algorithm based on Oriented Volume (OV) model is presented for vegetation with polarization characteristics, and the model and the algorithm is verified with a hard-in-loop polarimetric SAR interferometriy system con...
A vegetation parameters inversion algorithm based on Oriented Volume (OV) model is presented for vegetation with polarization characteristics, and the model and the algorithm is verified with a hard-in-loop polarimetric SAR interferometriy system con...
2012, 34(2): 261-267.
doi: 10.3724/SP.J.1146.2011.00584
Abstract:
Tetrolet transform, as one of the mutiscale geometric analysis method, can be used to represent natural images sparsely. However, SAR images consist of textures, leading to that the high frequency coefficients of Tetrolet still have large amplitude, ...
Tetrolet transform, as one of the mutiscale geometric analysis method, can be used to represent natural images sparsely. However, SAR images consist of textures, leading to that the high frequency coefficients of Tetrolet still have large amplitude, ...
2012, 34(2): 268-272.
doi: 10.3724/SP.J.1146.2011.00540
Abstract:
This paper presents a novel classification algorithm of hyperspectral remote sensing image based on sparse representation and spectral information. First, a learning dictionary is obtained based on hyperspectral remote sensing image data set, and the...
This paper presents a novel classification algorithm of hyperspectral remote sensing image based on sparse representation and spectral information. First, a learning dictionary is obtained based on hyperspectral remote sensing image data set, and the...
2012, 34(2): 273-278.
doi: 10.3724/SP.J.1146.2011.00676
Abstract:
Four-dimensional reconstruction of urban areas and man-made infrastructure is one of the most important applications of differential SAR tomography. In this situation, the urgent problem of differential SAR tomography is how to achieve satisfying ele...
Four-dimensional reconstruction of urban areas and man-made infrastructure is one of the most important applications of differential SAR tomography. In this situation, the urgent problem of differential SAR tomography is how to achieve satisfying ele...
2012, 34(2): 279-288.
doi: 10.3724/SP.J.1146.2011.00498
Abstract:
In order to solve the contradiction between high-resolution and wide-swath for the spaceborne single- channel SAR system, this paper proposes a new method based on periodic non-uniform sampling. The method uses the non-uniform sampling to avoid the o...
In order to solve the contradiction between high-resolution and wide-swath for the spaceborne single- channel SAR system, this paper proposes a new method based on periodic non-uniform sampling. The method uses the non-uniform sampling to avoid the o...
2012, 34(2): 287-293.
doi: 10.3724/SP.J.1146.2011.00568
Abstract:
A novel method based on anisotropic scale space is proposed to find matches in SAR images, which overcomes the disadvantages of SIFT. First, the anisotropic scale space of the image is constructed using bilateral filters, which removes the speckle wh...
A novel method based on anisotropic scale space is proposed to find matches in SAR images, which overcomes the disadvantages of SIFT. First, the anisotropic scale space of the image is constructed using bilateral filters, which removes the speckle wh...
2012, 34(2): 294-299.
doi: 10.3724/SP.J.1146.2011.00661
Abstract:
Because of its compressed sampling property, Compressive Sensing (CS) has wide application to high resolution imaging. But as a parametric imaging method, CS based imaging methods are sensitive to position error. Position error may cause defocusing, ...
Because of its compressed sampling property, Compressive Sensing (CS) has wide application to high resolution imaging. But as a parametric imaging method, CS based imaging methods are sensitive to position error. Position error may cause defocusing, ...
2012, 34(2): 300-304.
doi: 10.3724/SP.J.1146.2011.00612
Abstract:
This paper employs quaternion theory to angle estimation of collocated bistatic MIMO radar. Quaternion model is constructed from the general data model, and the quaternion Root MUltiple SIgnal Classification (Root-MUSIC) algorithm is proposed for ang...
This paper employs quaternion theory to angle estimation of collocated bistatic MIMO radar. Quaternion model is constructed from the general data model, and the quaternion Root MUltiple SIgnal Classification (Root-MUSIC) algorithm is proposed for ang...
2012, 34(2): 305-311.
doi: 10.3724/SP.J.1146.2011.00680
Abstract:
To relax the heavy requirement of training sample size in the radar High Resolution Range Profile (HRRP) target recognition, a linear dynamic model based recognition method is proposed. Firstly, the statistical characteristic of HRRPs frequency spect...
To relax the heavy requirement of training sample size in the radar High Resolution Range Profile (HRRP) target recognition, a linear dynamic model based recognition method is proposed. Firstly, the statistical characteristic of HRRPs frequency spect...
2012, 34(2): 312-317.
doi: 10.3724/SP.J.1146.2011.00555
Abstract:
To solve the problem of target localization in bistatic MIMO radar, a new method based on third-order tensor decomposition is proposed for fast multi-target localization. First, the matched filter output is transformed to a third-order tensor and its...
To solve the problem of target localization in bistatic MIMO radar, a new method based on third-order tensor decomposition is proposed for fast multi-target localization. First, the matched filter output is transformed to a third-order tensor and its...
2012, 34(2): 318-323.
doi: 10.3724/SP.J.1146.2011.00647
Abstract:
A Robust Transmitting Beamforming (RTB) algorithm is proposed for MIMO radar in the presence of unknown transmitted array distortions. The proposed beamformer, which is cascaded with the robust receiving beamformer, is based on the maximization of wo...
A Robust Transmitting Beamforming (RTB) algorithm is proposed for MIMO radar in the presence of unknown transmitted array distortions. The proposed beamformer, which is cascaded with the robust receiving beamformer, is based on the maximization of wo...
2012, 34(2): 324-332.
doi: 10.3724/SP.J.1146.2011.00487
Abstract:
A method based on Singular Value Decomposition (SVD) is presented to solve Tie Points (TPs) detection in Interferometric Synthetic Aperture Radar (InSAR) block. The core concept is to construct a corresponding matrix through SVD of the dissimilar dis...
A method based on Singular Value Decomposition (SVD) is presented to solve Tie Points (TPs) detection in Interferometric Synthetic Aperture Radar (InSAR) block. The core concept is to construct a corresponding matrix through SVD of the dissimilar dis...
2012, 34(2): 333-337.
doi: 10.3724/SP.J.1146.2011.00708
Abstract:
If another separated receiver is added to a full monostatic high-frequency ground wave radar, aT/Rm-Rb system can be got, one receiverRm operating in the monostatic mode, co-located with transmitter T, and another receiverRb operating in bistatic mod...
If another separated receiver is added to a full monostatic high-frequency ground wave radar, aT/Rm-Rb system can be got, one receiverRm operating in the monostatic mode, co-located with transmitter T, and another receiverRb operating in bistatic mod...
2012, 34(2): 338-343.
doi: 10.3724/SP.J.1146.2011.00572
Abstract:
According to the special structure of China Mobile Multimedia Broadcasting (CMMB) signal, this paper presents two methods for reference signal extraction in passive bistatic radar system based on CMMB signal, the adaptive filter algorithm based on th...
According to the special structure of China Mobile Multimedia Broadcasting (CMMB) signal, this paper presents two methods for reference signal extraction in passive bistatic radar system based on CMMB signal, the adaptive filter algorithm based on th...
2012, 34(2): 344-350.
doi: 10.3724/SP.J.1146.2011.00581
Abstract:
Available SAR-Ground Moving Target Indication (SAR-GMTI) method based on the forward-looking antenna is mainly Space-Time Adaptive Processing (STAP), which is hard to be practically realized. For this fact, an advanced SAR-GMTI method based on the fo...
Available SAR-Ground Moving Target Indication (SAR-GMTI) method based on the forward-looking antenna is mainly Space-Time Adaptive Processing (STAP), which is hard to be practically realized. For this fact, an advanced SAR-GMTI method based on the fo...
2012, 34(2): 351-355.
doi: 10.3724/SP.J.1146.2011.00714
Abstract:
A ground clutter elimination method based on terrain visible analysis is proposed for airborne weather radar that operates in weather mode. Visibility judgment is adopted to identify the range bins containing clutter. The view angles for all sampling...
A ground clutter elimination method based on terrain visible analysis is proposed for airborne weather radar that operates in weather mode. Visibility judgment is adopted to identify the range bins containing clutter. The view angles for all sampling...
2012, 34(2): 356-360.
doi: 10.3724/SP.J.1146.2011.00719
Abstract:
Phase synchronization of radar carrier is prerequisite to distributed satellite SAR system. In this paper, a modified phase synchronization means of distributed satellite SAR is proposed, that is, phase synchronization pulses are exchanged between sa...
Phase synchronization of radar carrier is prerequisite to distributed satellite SAR system. In this paper, a modified phase synchronization means of distributed satellite SAR is proposed, that is, phase synchronization pulses are exchanged between sa...
2012, 34(2): 361-367.
doi: 10.3724/SP.J.1146.2011.00314
Abstract:
Sub-Nyquist sampling is an effective approach to mitigate the high sampling rate pressure for wideband spectrum sensing. The existing sub-Nyquist sampling method requires excessive large measurement matrix and exact sparsity level in recovery phase. ...
Sub-Nyquist sampling is an effective approach to mitigate the high sampling rate pressure for wideband spectrum sensing. The existing sub-Nyquist sampling method requires excessive large measurement matrix and exact sparsity level in recovery phase. ...
2012, 34(2): 368-374.
doi: 10.3724/SP.J.1146.2011.00513
Abstract:
Stereoscopic image quality assessment is an effective way to evaluate the performance of stereoscopic video system. However, how to use human visual characteristics effectively is still a research focus in objective stereoscopic image quality. In thi...
Stereoscopic image quality assessment is an effective way to evaluate the performance of stereoscopic video system. However, how to use human visual characteristics effectively is still a research focus in objective stereoscopic image quality. In thi...
2012, 34(2): 375-381.
doi: 10.3724/SP.J.1146.2011.00598
Abstract:
Local segmentation is the key work in image segmentation. Considering two existing problems, which are the instability of controlling narrow band and the low precision in local segmentation, this paper proposes a new Binary and Selective Morphologica...
Local segmentation is the key work in image segmentation. Considering two existing problems, which are the instability of controlling narrow band and the low precision in local segmentation, this paper proposes a new Binary and Selective Morphologica...
2012, 34(2): 382-387.
doi: 10.3724/SP.J.1146.2011.00205
Abstract:
The performance of Direction-Of-Arrival (DOA) estimation of classical algorithms may degrade substantially in the presence of mutual coupling. In this paper, a blind source separation based algorithm is proposed for DOA estimation using uniform linea...
The performance of Direction-Of-Arrival (DOA) estimation of classical algorithms may degrade substantially in the presence of mutual coupling. In this paper, a blind source separation based algorithm is proposed for DOA estimation using uniform linea...
2012, 34(2): 388-392.
doi: 10.3724/SP.J.1146.2011.00626
Abstract:
For the difficulty or low accuracy on foreground extraction in a complex environment, this paper proposes Bayes-total probability joint estimation for the detection and segmentation of foreground objects and the definition of background error control...
For the difficulty or low accuracy on foreground extraction in a complex environment, this paper proposes Bayes-total probability joint estimation for the detection and segmentation of foreground objects and the definition of background error control...
2012, 34(2): 393-397.
doi: 10.3724/SP.J.1146.2011.00689
Abstract:
The landmark-based registration methods do not define an unbiased transformation between the two images, which are not suitable for registering images where there are large deformations. A progressive landmark-based image registration method using Me...
The landmark-based registration methods do not define an unbiased transformation between the two images, which are not suitable for registering images where there are large deformations. A progressive landmark-based image registration method using Me...
2012, 34(2): 398-403.
doi: 10.3724/SP.J.1146.2011.00596
Abstract:
The Gaussian Mixture implementation of Probability Hypothesis Density Filter in Linear Gaussian Jump Markov multi-target System model (LGJMS-GMPHDF) is proved to be an effective tool for tracking an unknown and time-varying number of targets with unc...
The Gaussian Mixture implementation of Probability Hypothesis Density Filter in Linear Gaussian Jump Markov multi-target System model (LGJMS-GMPHDF) is proved to be an effective tool for tracking an unknown and time-varying number of targets with unc...
2012, 34(2): 404-409.
doi: 10.3724/SP.J.1146.2011.00503
Abstract:
A novel wide-band Direction-Of-Arrival (DOA) estimation method based on space-frequency sparse representation is proposed to estimate the frequency and DOA of narrow band signal with a wide band receiver. The over-complete dictionary is constructed b...
A novel wide-band Direction-Of-Arrival (DOA) estimation method based on space-frequency sparse representation is proposed to estimate the frequency and DOA of narrow band signal with a wide band receiver. The over-complete dictionary is constructed b...
2012, 34(2): 410-415.
doi: 10.3724/SP.J.1146.2011.00786
Abstract:
This paper proposes a construction scheme of girth-6 quasi-cyclic Low-Density Check-Parity (LDPC) codes based on pseudo-cyclic Maximum Distance Separable (MDS) codes with two information symbols. The parity-check matrix of an quasi-cyclic LDPC code i...
This paper proposes a construction scheme of girth-6 quasi-cyclic Low-Density Check-Parity (LDPC) codes based on pseudo-cyclic Maximum Distance Separable (MDS) codes with two information symbols. The parity-check matrix of an quasi-cyclic LDPC code i...
2012, 34(2): 416-422.
doi: 10.3724/SP.J.1146.2011.00623
Abstract:
The capacity issue of asymmetric two-way amplify-and-forward relaying is investigated. First, exact and asymptotic outage probabilities of the network scenario under investigation are derived over Rayleigh fading channels. Then, it is found that the ...
The capacity issue of asymmetric two-way amplify-and-forward relaying is investigated. First, exact and asymptotic outage probabilities of the network scenario under investigation are derived over Rayleigh fading channels. Then, it is found that the ...
2012, 34(2): 423-426.
doi: 10.3724/SP.J.1146.2011.00602
Abstract:
The way of controlling transmit power, in a precoding method based on maximal Signal-to- Leakage-plus-Noise Ratio (SLNR) for multiuser MIMO downlinks，is not efficient to ensure each users available SLNR value, so a precoding scheme pursuing design go...
The way of controlling transmit power, in a precoding method based on maximal Signal-to- Leakage-plus-Noise Ratio (SLNR) for multiuser MIMO downlinks，is not efficient to ensure each users available SLNR value, so a precoding scheme pursuing design go...
2012, 34(2): 427-432.
doi: 10.3724/SP.J.1146.2011.00530
Abstract:
Since preamble-based channel estimation method can overcome the intrinsic inter-symbol interference and inter-carrier interference in OFDM/Offset QAM (OFDM/OQAM) system, it becomes the commonly used structure in similar systems. In this paper, accord...
Since preamble-based channel estimation method can overcome the intrinsic inter-symbol interference and inter-carrier interference in OFDM/Offset QAM (OFDM/OQAM) system, it becomes the commonly used structure in similar systems. In this paper, accord...
2012, 34(2): 433-439.
doi: 10.3724/SP.J.1146.2011.00586
Abstract:
H.264 takes objective metric as distortion criteria to perform Rate Control (RC) and Rate Distortion Optimization (RDO)-based mode decision, which can not acquire optimal subjective quality. Base on our previous research results, this paper applies S...
H.264 takes objective metric as distortion criteria to perform Rate Control (RC) and Rate Distortion Optimization (RDO)-based mode decision, which can not acquire optimal subjective quality. Base on our previous research results, this paper applies S...
2012, 34(2): 440-445.
doi: 10.3724/SP.J.1146.2011.00590
Abstract:
According to the strong memory effect characteristics of the broadband RF power amplifier, this paper presents a new predistortion method, and it is termed as Parallel MP-EMP-CIMT (PMEC). The new predistorter is constructed of three parts, Memory Pol...
According to the strong memory effect characteristics of the broadband RF power amplifier, this paper presents a new predistortion method, and it is termed as Parallel MP-EMP-CIMT (PMEC). The new predistorter is constructed of three parts, Memory Pol...
2012, 34(2): 446-450.
doi: 10.3724/SP.J.1146.2011.00686
Abstract:
In order to improve the computing efficiency ofk1P+k2Q in elliptic curve cryptosystem, a new seven- element Joint Sparse Form (JSF) is proposed in this paper. For any pair of integers, the definition and calculating algorithm of the new seven-element...
In order to improve the computing efficiency ofk1P+k2Q in elliptic curve cryptosystem, a new seven- element Joint Sparse Form (JSF) is proposed in this paper. For any pair of integers, the definition and calculating algorithm of the new seven-element...
2012, 34(2): 451-456.
doi: 10.3724/SP.J.1146.2011.00701
Abstract:
Available Attribute-Based Authenticated Key Exchange (ABAKE) protocols are all designed in the single Attribute Authority (AA) environment. However, secure communication is in demand between parties from different Attribute Authorities (AAs). Based o...
Available Attribute-Based Authenticated Key Exchange (ABAKE) protocols are all designed in the single Attribute Authority (AA) environment. However, secure communication is in demand between parties from different Attribute Authorities (AAs). Based o...
2012, 34(2): 457-461.
doi: 10.3724/SP.J.1146.2011.00682
Abstract:
Using dual system encryption, a attribute-based encryption scheme with hidden access structures is proposed in prime order bilinear group in this paper. The scheme relies on the D-Linear and Decision Bilinear Diffie-Hellman (DBDH) assumptions, and is...
Using dual system encryption, a attribute-based encryption scheme with hidden access structures is proposed in prime order bilinear group in this paper. The scheme relies on the D-Linear and Decision Bilinear Diffie-Hellman (DBDH) assumptions, and is...
2012, 34(2): 462-467.
doi: 10.3724/SP.J.1146.2011.00541
Abstract:
Using Learning With Errors (LWE) in the lattice, the equation test is converted to a decryption ability of a random string. It solves the secure two-party computation such as the relationship of an element and a set, set intersection, and set equatio...
Using Learning With Errors (LWE) in the lattice, the equation test is converted to a decryption ability of a random string. It solves the secure two-party computation such as the relationship of an element and a set, set intersection, and set equatio...
2012, 34(2): 468-473.
doi: 10.3724/SP.J.1146.2011.00670
Abstract:
To construct Reconfigurable Service Carrying Network (RSCN) in Reconfigurable Flexible Network (ReFlexNet) infrastructure can effectively solve the puzzle faced by traditional internet infrastructure. Resilient construction problems of RSCN in the pr...
To construct Reconfigurable Service Carrying Network (RSCN) in Reconfigurable Flexible Network (ReFlexNet) infrastructure can effectively solve the puzzle faced by traditional internet infrastructure. Resilient construction problems of RSCN in the pr...
2012, 34(2): 474-480.
doi: 10.3724/SP.J.1146.2011.00520
Abstract:
A real-time system is required to guarantee its stringent requirements in real-time response and reliability since any tasks failure to response correctly within its deadline may result in a catastrophe. Based on the rollback recovery fault-tolerant ...
A real-time system is required to guarantee its stringent requirements in real-time response and reliability since any tasks failure to response correctly within its deadline may result in a catastrophe. Based on the rollback recovery fault-tolerant ...
2012, 34(2): 481-486.
doi: 10.3724/SP.J.1146.2011.00593
Abstract:
Reflector antenna with defocused array feed is investigated. The phased array feed moves towards the reflector and locates at the defocused area, which can enhance the beam reconfiguring ability and limited angle scanning capability. Improved project...
Reflector antenna with defocused array feed is investigated. The phased array feed moves towards the reflector and locates at the defocused area, which can enhance the beam reconfiguring ability and limited angle scanning capability. Improved project...
2012, 34(2): 487-492.
doi: 10.3724/SP.J.1146.2011.00571
Abstract:
In the Triple Module Redundancy (TMR) design for the FPGA, the feedback loop of the register will lead to the persistent errors which would have a negative impact on the fault-tolerant capability of the triple module redundancy design, hence the vote...
2012, 34(2): 493-498.
doi: 10.3724/SP.J.1146.2011.00403
Abstract:
For the problem of great series motional resistance in Micromechanical (or MEMS) disk resonator, a novel moving-electrode approach is presented to reduce the electrode-disk gap and the series motional resistance of resonator. This approach introduces...
For the problem of great series motional resistance in Micromechanical (or MEMS) disk resonator, a novel moving-electrode approach is presented to reduce the electrode-disk gap and the series motional resistance of resonator. This approach introduces...
2012, 34(2): 499-503.
doi: 10.3724/SP.J.1146.2011.00575
Abstract:
Spectral endmember extraction is an important pretreatment for the further analysis of hyperspectral data. Regarding many kinds of endmember extraction algorithms, N-FINDR algorithm is widely utilized for its full-automation and better endmember extr...
Spectral endmember extraction is an important pretreatment for the further analysis of hyperspectral data. Regarding many kinds of endmember extraction algorithms, N-FINDR algorithm is widely utilized for its full-automation and better endmember extr...
2012, 34(2): 504-508.
doi: 10.3724/SP.J.1146.2011.00629
Abstract:
Precision analysis of the bistatic spectrum is the precondition of designing imaging algorithms. For the constant-offset case, the precision analysis of the spectrum is given in detail in the frequency domain. The spectrum is exactly analytical when ...
Precision analysis of the bistatic spectrum is the precondition of designing imaging algorithms. For the constant-offset case, the precision analysis of the spectrum is given in detail in the frequency domain. The spectrum is exactly analytical when ...
