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2010 Vol. 32, No. 6
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2010, 32(6): 1271-1276.
doi: 10.3724/SP.J.1146.2009.00853
Abstract:
An Enhanced Multiple Model Particle Filter(EMMPF) algorithm is presented for maneuvering target tracking. Rather than allocating the particles to the various modes according to mode probabilities as the MMPF, the new algorithm proposes an approach wh...
An Enhanced Multiple Model Particle Filter(EMMPF) algorithm is presented for maneuvering target tracking. Rather than allocating the particles to the various modes according to mode probabilities as the MMPF, the new algorithm proposes an approach wh...
2010, 32(6): 1277-1283.
doi: 10.3724/SP.J.1146.2009.00857
Abstract:
A new data exponent weighted fuzzy clustering approach is proposed by introducing a set of exponent weighting factors and influence exponent, the new approach makes it possible to treat the data points discriminatively. The new approach is combined w...
A new data exponent weighted fuzzy clustering approach is proposed by introducing a set of exponent weighting factors and influence exponent, the new approach makes it possible to treat the data points discriminatively. The new approach is combined w...
2010, 32(6): 1284-1288.
doi: 10.3724/SP.J.1146.2009.00861
Abstract:
One-Class Support Vector Machines (OCSVMs) distinguish outliers by computing a hyper-plane in feature space. The choice of the origin as separation point is arbitrary, which affects the decision boundary, and the distribution of samples has impact on...
One-Class Support Vector Machines (OCSVMs) distinguish outliers by computing a hyper-plane in feature space. The choice of the origin as separation point is arbitrary, which affects the decision boundary, and the distribution of samples has impact on...
2010, 32(6): 1289-1294.
doi: 10.3724/SP.J.1146.2008.01387
Abstract:
Multi-target tracking is becoming one of most focusing research topics because of the modern military affair requirements as well as civil developments. Among all the techniques, Probability Hypothesis Density(PHD) filtering approach, especially Gaus...
Multi-target tracking is becoming one of most focusing research topics because of the modern military affair requirements as well as civil developments. Among all the techniques, Probability Hypothesis Density(PHD) filtering approach, especially Gaus...
2010, 32(6): 1295-1300.
doi: 10.3724/SP.J.1146.2009.01083
Abstract:
For lower detection probability problem of small IR targets in a complex non-homogeneous background, an improved M-estimation filtering algorithm based on residual is proposed to suppress background clutters. The algorithm introduces the basic model ...
For lower detection probability problem of small IR targets in a complex non-homogeneous background, an improved M-estimation filtering algorithm based on residual is proposed to suppress background clutters. The algorithm introduces the basic model ...
2010, 32(6): 1301-1305.
doi: 10.3724/SP.J.1146.2009.00792
Abstract:
There are some problems in GM(1,1) model, such as, model method biased, compatibility condition not satisfied, transformation inconsistent and first number of the initial sequence not functioning high precision prediction in model after an accumulate...
There are some problems in GM(1,1) model, such as, model method biased, compatibility condition not satisfied, transformation inconsistent and first number of the initial sequence not functioning high precision prediction in model after an accumulate...
LLE-Based Classification Algorithm and Its Application to Passive Millimeter Wave Target Recognition
2010, 32(6): 1306-1310.
doi: 10.3724/SP.J.1146.2009.00877
Abstract:
A new one-class classification algorithm is put forward based on the idea of Locally Linear Embedding (LLE) and the low dimensional manifold of data distribution, for the issue of one-class classification of pattern recognition. The low dimensional m...
A new one-class classification algorithm is put forward based on the idea of Locally Linear Embedding (LLE) and the low dimensional manifold of data distribution, for the issue of one-class classification of pattern recognition. The low dimensional m...
2010, 32(6): 1311-1315.
doi: 10.3724/SP.J.1146.2008.01111
Abstract:
The algorithms of Graph Embedding model the manifold of data set by an undirected weighted graph. Some manifold learning algorithms can be unified by this framework according to the respective weighted matrix. For the small sample size problem, Linea...
The algorithms of Graph Embedding model the manifold of data set by an undirected weighted graph. Some manifold learning algorithms can be unified by this framework according to the respective weighted matrix. For the small sample size problem, Linea...
2010, 32(6): 1316-1320.
doi: 10.3724/SP.J.1146.2009.00867
Abstract:
Image quality assessment is fundamental importance for image or video processing system. Following the knowledge of properties of human visual system and features of natural image, a novel full reference image quality assessment based on the regular ...
Image quality assessment is fundamental importance for image or video processing system. Following the knowledge of properties of human visual system and features of natural image, a novel full reference image quality assessment based on the regular ...
2010, 32(6): 1321-1326.
doi: 10.3724/SP.J.1146.2009.00868
Abstract:
At present, the effective way to resolve the contradiction between huge space-borne SAR raw data rate and limited on-board data-transmission bandwidth is space-borne SAR raw data compression. The higher compression ratio is, the lower data rate will ...
At present, the effective way to resolve the contradiction between huge space-borne SAR raw data rate and limited on-board data-transmission bandwidth is space-borne SAR raw data compression. The higher compression ratio is, the lower data rate will ...
2010, 32(6): 1327-1331.
doi: 10.3724/SP.J.1146.2009.00832
Abstract:
GLRT is an efficient method to resolve the detection issue of range spread targets in compound Gaussian clutter. But normal GLRT will be out of action when the velocity of target is unknown. Farther research is performed under this situation. An esti...
GLRT is an efficient method to resolve the detection issue of range spread targets in compound Gaussian clutter. But normal GLRT will be out of action when the velocity of target is unknown. Farther research is performed under this situation. An esti...
2010, 32(6): 1332-1337.
doi: 10.3724/SP.J.1146.2009.01104
Abstract:
Space Time Adaptive Processing (STAP) shows notable performance degradation when secondary data is contaminated by target-like signals or only a small number of secondary data is available. To solve the problem, a new methodology exploring characteri...
Space Time Adaptive Processing (STAP) shows notable performance degradation when secondary data is contaminated by target-like signals or only a small number of secondary data is available. To solve the problem, a new methodology exploring characteri...
2010, 32(6): 1338-1342.
doi: 10.3724/SP.J.1146.2008.01637
Abstract:
Phase synchronization is a key issue in bistatic and multistatic Synthetic Aperture Radar (SAR) imaging. This paper discusses this issue based on experiment data, presents a multi-PRF link synchronization scheme, which solves frequency measurement am...
Phase synchronization is a key issue in bistatic and multistatic Synthetic Aperture Radar (SAR) imaging. This paper discusses this issue based on experiment data, presents a multi-PRF link synchronization scheme, which solves frequency measurement am...
2010, 32(6): 1343-1349.
doi: 10.3724/SP.J.1146.2009.00860
Abstract:
In the paper, making use of two key techniques in SAR domainmutichannel SAR and PolSAR, a method to suppress both the blanketing jamming and the deceptive jamming is provided in Dual-channel PolSAR (D-PolSAR) system. First, the model of the D-PolSAR ...
In the paper, making use of two key techniques in SAR domainmutichannel SAR and PolSAR, a method to suppress both the blanketing jamming and the deceptive jamming is provided in Dual-channel PolSAR (D-PolSAR) system. First, the model of the D-PolSAR ...
2010, 32(6): 1350-1354.
doi: 10.3724/SP.J.1146.2009.00839
Abstract:
It is difficult for the traditional radar to detect effectively the high speed moving target with the long time coherent integration method. In this paper, Multi-Input Multi-Output (MIMO) noise radar, in which the parallel coherent processing of the ...
It is difficult for the traditional radar to detect effectively the high speed moving target with the long time coherent integration method. In this paper, Multi-Input Multi-Output (MIMO) noise radar, in which the parallel coherent processing of the ...
2010, 32(6): 1355-1360.
doi: 10.3724/SP.J.1146.2009.00899
Abstract:
The micro-Doppler signals of humans heartbeat, breathe and arm-moving using through-wall radar are nonlinear and non-stationary, which can be analyzed by Empirical Mode Decomposition (EMD). Due to the mode mixing problem in EMD, an improved Ensemble ...
The micro-Doppler signals of humans heartbeat, breathe and arm-moving using through-wall radar are nonlinear and non-stationary, which can be analyzed by Empirical Mode Decomposition (EMD). Due to the mode mixing problem in EMD, an improved Ensemble ...
2010, 32(6): 1361-1365.
doi: 10.3724/SP.J.1146.2009.00734
Abstract:
In this paper, an innovative airborne forward-looking SAR system using antenna array is studied, and a new three-dimensional imaging algorithm is proposed for airborne forward-looking SAR based on the image geometry and the characteristic of echo sig...
In this paper, an innovative airborne forward-looking SAR system using antenna array is studied, and a new three-dimensional imaging algorithm is proposed for airborne forward-looking SAR based on the image geometry and the characteristic of echo sig...
2010, 32(6): 1366-1369.
doi: 10.3724/SP.J.1146.2009.00784
Abstract:
The main difficulty in the use of pseudolites is the near-far effect, where the strong signal component prevents a conventional receiver from detecting the weak component. A new solution based on the orthogonality of the pseudolite signal is presente...
The main difficulty in the use of pseudolites is the near-far effect, where the strong signal component prevents a conventional receiver from detecting the weak component. A new solution based on the orthogonality of the pseudolite signal is presente...
2010, 32(6): 1370-1376.
doi: 10.3724/SP.J.1146.2009.00227
Abstract:
Considering the mechanism of two-channel direction-finding systems with four-arm spiral antenna, guidance signal generation model related to the superposed field radiated by the antennae of radar and decoy is presented. A simple and practical movemen...
Considering the mechanism of two-channel direction-finding systems with four-arm spiral antenna, guidance signal generation model related to the superposed field radiated by the antennae of radar and decoy is presented. A simple and practical movemen...
2010, 32(6): 1377-1383.
doi: 10.3724/SP.J.1146.2009.01437
Abstract:
For changing the status that optimization and design of frequency reconfigurable microstrip antenna recently is usually depended on repeated experiments, an efficient and fast method is proposed in this paper. A Novel Quantum Genetic Algorithm (NQGA)...
For changing the status that optimization and design of frequency reconfigurable microstrip antenna recently is usually depended on repeated experiments, an efficient and fast method is proposed in this paper. A Novel Quantum Genetic Algorithm (NQGA)...
2010, 32(6): 1384-1388.
doi: 10.3724/SP.J.1146.2009.00881
Abstract:
In this paper, the numerical properties of higher-order Locally One Dimensionally Finite-Difference Time-Domain (LOD-FDTD) are investigated, i.e. stability, numerical dispersion, and convergence. The universal formulas of the amplitude factor and the...
In this paper, the numerical properties of higher-order Locally One Dimensionally Finite-Difference Time-Domain (LOD-FDTD) are investigated, i.e. stability, numerical dispersion, and convergence. The universal formulas of the amplitude factor and the...
2010, 32(6): 1389-1394.
doi: 10.3724/SP.J.1146.2009.00873
Abstract:
To solve the problem of an excessive area required to implement milliseconds reset time with resistance and capacitance in POR (Power-On Reset) circuit, an area-efficiency delay circuit based on an exponential time-extending technique is proposed in ...
To solve the problem of an excessive area required to implement milliseconds reset time with resistance and capacitance in POR (Power-On Reset) circuit, an area-efficiency delay circuit based on an exponential time-extending technique is proposed in ...
2010, 32(6): 1395-1400.
doi: 10.3724/SP.J.1146.2008.01689
Abstract:
A novel FPGA simulated annealing placement algorithm is proposed to improve the routability and optimize the length of wires. Different cost functions are applied to different temperature range. In high temperature stage, the half perimeter method is...
A novel FPGA simulated annealing placement algorithm is proposed to improve the routability and optimize the length of wires. Different cost functions are applied to different temperature range. In high temperature stage, the half perimeter method is...
2010, 32(6): 1401-1405.
doi: 10.3724/SP.J.1146.2009.00768
Abstract:
A new parasitic-mode-suppressing method for TM310 mode (operating mode) cylindrical resonator is presented in this paper. In order to suppress TM020 mode, a receiving-antenna is set into the resonator, and then the expression for frequency offset is ...
A new parasitic-mode-suppressing method for TM310 mode (operating mode) cylindrical resonator is presented in this paper. In order to suppress TM020 mode, a receiving-antenna is set into the resonator, and then the expression for frequency offset is ...
2010, 32(6): 1406-1411.
doi: 10.3724/SP.J.1146.2009.00891
Abstract:
Spectrum sensing is a key functional part for cognitive radio networks. In heterogeneous networks, the mobility of cognitive nodes will lead to changes in the received signal strength and noise power, which make it difficult for cognitive users to ac...
Spectrum sensing is a key functional part for cognitive radio networks. In heterogeneous networks, the mobility of cognitive nodes will lead to changes in the received signal strength and noise power, which make it difficult for cognitive users to ac...
2010, 32(6): 1412-1417.
doi: 10.3724/SP.J.1146.2009.00906
Abstract:
Several frequency-domain channel estimation algorithms based on a new pilot forwarding schedule are proposed for distributed space-frequency coded cooperative communication system with multiple relay nodes over frequency-selective fading channels, in...
Several frequency-domain channel estimation algorithms based on a new pilot forwarding schedule are proposed for distributed space-frequency coded cooperative communication system with multiple relay nodes over frequency-selective fading channels, in...
2010, 32(6): 1418-1422.
doi: 10.3724/SP.J.1146.2009.00879
Abstract:
A sub-Nyquist sampling method is presented to reduce the ADC sampling rate in UWB wireless communications. Sampling rate of the proposed method is related to the signal innovation rate, which is about one tenth of the Nyquist rate in conventional Sha...
A sub-Nyquist sampling method is presented to reduce the ADC sampling rate in UWB wireless communications. Sampling rate of the proposed method is related to the signal innovation rate, which is about one tenth of the Nyquist rate in conventional Sha...
Transmit Antenna Selection Based on Approximate Capacity Analysis in Linear Dispersion Codes Systems
2010, 32(6): 1423-1428.
doi: 10.3724/SP.J.1146.2009.00830
Abstract:
In order to reduce the complexity of transmit antenna selection in Multi-Input and Multi- Output(MIMO) systems using Linear Dispersion Codes(LDC), an approximate capacity expression considering the average effect of LDC matrix is derived making use o...
In order to reduce the complexity of transmit antenna selection in Multi-Input and Multi- Output(MIMO) systems using Linear Dispersion Codes(LDC), an approximate capacity expression considering the average effect of LDC matrix is derived making use o...
2010, 32(6): 1429-1434.
doi: 10.3724/SP.J.1146.2009.00848
Abstract:
Through deriving the matrix representations of the critical-sampled Filtered Multi-Tone(FMT) modulation system, a new subchannel frequency-domain equalization algorithm is proposed in this paper to eliminate the Inter-Symbol Interference(ISI) in crit...
Through deriving the matrix representations of the critical-sampled Filtered Multi-Tone(FMT) modulation system, a new subchannel frequency-domain equalization algorithm is proposed in this paper to eliminate the Inter-Symbol Interference(ISI) in crit...
2010, 32(6): 1435-1440.
doi: 10.3724/SP.J.1146.2009.00695
Abstract:
This paper presents a practical scheme of equal flux beams coverage and frequency multiplex according to CDMA standard utilized by LEO satellites, which can reduce the effect of corner problem and near and far problem. Genetic algorithm is adopted to...
This paper presents a practical scheme of equal flux beams coverage and frequency multiplex according to CDMA standard utilized by LEO satellites, which can reduce the effect of corner problem and near and far problem. Genetic algorithm is adopted to...
2010, 32(6): 1441-1445.
doi: 10.3724/SP.J.1146.2009.00672
Abstract:
Selection Combining (SC) receiver for Fast Frequency-Hopped Binary Frequency-Shift-Keying (FFH/ BFSK) communication systems can reduce the performance degradation caused by interference. The SC receiver model is proposed in the present of Partial Ban...
Selection Combining (SC) receiver for Fast Frequency-Hopped Binary Frequency-Shift-Keying (FFH/ BFSK) communication systems can reduce the performance degradation caused by interference. The SC receiver model is proposed in the present of Partial Ban...
2010, 32(6): 1446-1451.
doi: 10.3724/SP.J.1146.2009.00834
Abstract:
In order to improve the system performance and reduce the algorithm complexity future, a new better approximate analysis method named equivalent chi-square distribution method is proposed in cooperative communication systems. More accurate theoretica...
In order to improve the system performance and reduce the algorithm complexity future, a new better approximate analysis method named equivalent chi-square distribution method is proposed in cooperative communication systems. More accurate theoretica...
2010, 32(6): 1452-1456.
doi: 10.3724/SP.J.1146.2009.00781
Abstract:
In order to get over the limitation of the GPS(Generalized Processor Sharing) like queuing algorithms which the bound of the queuing delay is so long and unstable that is undesirable for the packets of real-time applications, a new packet queuing and...
In order to get over the limitation of the GPS(Generalized Processor Sharing) like queuing algorithms which the bound of the queuing delay is so long and unstable that is undesirable for the packets of real-time applications, a new packet queuing and...
2010, 32(6): 1457-1462.
doi: 10.3724/SP.J.1146.2009.00908
Abstract:
CICQ (Combined Input Crosspoint Queued) is a switch fabric with buffers in crosspoints, which brings its nice distributed parallel scheduling property with no internal speedup required. In order to adapt to various traffics in the network environment...
CICQ (Combined Input Crosspoint Queued) is a switch fabric with buffers in crosspoints, which brings its nice distributed parallel scheduling property with no internal speedup required. In order to adapt to various traffics in the network environment...
2010, 32(6): 1463-1468.
doi: 10.3724/SP.J.1146.2008.01486
Abstract:
In this paper an algorithm called IQoE2QoS(Improved QoE to QoS) is presented. This algorithm focus on QoE how to map to QoS based on fuzzy theory. IQoE2QoS presented has three targets: it can give the association degree among indications through calc...
In this paper an algorithm called IQoE2QoS(Improved QoE to QoS) is presented. This algorithm focus on QoE how to map to QoS based on fuzzy theory. IQoE2QoS presented has three targets: it can give the association degree among indications through calc...
2010, 32(6): 1469-1474.
doi: 10.3724/SP.J.1146.2009.00720
Abstract:
In this paper, a dynamic reputation evaluation model is proposed to meet the characteristic and security requirement in hierarchical Ad hoc networks. In this model, the reputation relationship is defined with the consideration of related nodes roles ...
In this paper, a dynamic reputation evaluation model is proposed to meet the characteristic and security requirement in hierarchical Ad hoc networks. In this model, the reputation relationship is defined with the consideration of related nodes roles ...
2010, 32(6): 1475-1479.
doi: 10.3724/SP.J.1146.2009.00521
Abstract:
In this paper, the optimum numbers of cooperative nodes and modulation methods are analyzed to minimize the total energy consumption in a cooperative wireless sensor networks, which is power-limited. An exact closed-form expression is derived for the...
In this paper, the optimum numbers of cooperative nodes and modulation methods are analyzed to minimize the total energy consumption in a cooperative wireless sensor networks, which is power-limited. An exact closed-form expression is derived for the...
2010, 32(6): 1480-1484.
doi: 10.3724/SP.J.1146.2009.00892
Abstract:
With the characteristics of self-organizing, self-management and limited energy of WSN, the security is a great challenge. In this paper, a novel Efficient Broadcast Key Management Policy named as EBKMP is proposed. It divides broadcast trees into gr...
With the characteristics of self-organizing, self-management and limited energy of WSN, the security is a great challenge. In this paper, a novel Efficient Broadcast Key Management Policy named as EBKMP is proposed. It divides broadcast trees into gr...
2010, 32(6): 1489-1492.
doi: 10.3724/SP.J.1146.2009.00859
Abstract:
The concept of dynamic Distortion-Compensated Quantization Index Modulation (dynamic DC-QIM) is proposed, which differs from the conventional DC-QIM in whether or not quantization step size and DC parameter are changeable. Firstly, the condition sati...
The concept of dynamic Distortion-Compensated Quantization Index Modulation (dynamic DC-QIM) is proposed, which differs from the conventional DC-QIM in whether or not quantization step size and DC parameter are changeable. Firstly, the condition sati...
2010, 32(6): 1493-1496.
doi: 10.3724/SP.J.1146.2009.00776
Abstract:
Considering the issue of angle ambiguity in estimating the directions of arrivals, this paper analyses the feasibility of ambiguity solving with virtual arrays using the virtual array transformation algorithm and the virtual array algorithm based on ...
Considering the issue of angle ambiguity in estimating the directions of arrivals, this paper analyses the feasibility of ambiguity solving with virtual arrays using the virtual array transformation algorithm and the virtual array algorithm based on ...
2010, 32(6): 1497-1500.
doi: 10.3724/SP.J.1146.2008.00265
Abstract:
In the application of distributed-satellite INSAR system for velocity-measurement of ground moving targets, due to the satellite clusters flying around, the flying tracks of all satellites are not parallel and their velocity vectors are different. Th...
In the application of distributed-satellite INSAR system for velocity-measurement of ground moving targets, due to the satellite clusters flying around, the flying tracks of all satellites are not parallel and their velocity vectors are different. Th...
2010, 32(6): 1501-1504.
doi: 10.3724/SP.J.1146.2009.00736
Abstract:
A rigorous analysis of Split Rring Resonator (SRR) metamaterials is presented for three different electromagnetic field polarization and propagation directions to establish the SRR resonance behaviors. The Smiths parameter retrieval method is then ex...
A rigorous analysis of Split Rring Resonator (SRR) metamaterials is presented for three different electromagnetic field polarization and propagation directions to establish the SRR resonance behaviors. The Smiths parameter retrieval method is then ex...
2010, 32(6): 1505-1509.
doi: 10.3724/SP.J.1146.2008.01186
Abstract:
An improved QR based detection algorithm is proposed for use in the Multiple- Input Multiple-Output (MIMO) communication systems. The method does not require the pseudo inverse of the channel matrix. The probability of error propagation is reduced th...
An improved QR based detection algorithm is proposed for use in the Multiple- Input Multiple-Output (MIMO) communication systems. The method does not require the pseudo inverse of the channel matrix. The probability of error propagation is reduced th...
2010, 32(6): 1510-1514.
doi: 10.3724/SP.J.1146.2008.00865
Abstract:
This paper studies the constellations of 22n+1-Quadrature Amplitude Modulation (QAM), and proposed a square QAM constellation which can build its mapping list according to the Gray coding rules. To compare the square constellation with the cross cons...
This paper studies the constellations of 22n+1-Quadrature Amplitude Modulation (QAM), and proposed a square QAM constellation which can build its mapping list according to the Gray coding rules. To compare the square constellation with the cross cons...
2010, 32(6): 1515-1519.
doi: 10.3724/SP.J.1146.2009.00651
Abstract:
This paper presents a high-speed GCM architecture, which is suitable for IEEE 802.1AE protocol. The core modules of GCM include AES and Ghash. In Ghash module, a new parallel multiply-adder is proposed, which can handle several sets of data at the sa...
This paper presents a high-speed GCM architecture, which is suitable for IEEE 802.1AE protocol. The core modules of GCM include AES and Ghash. In Ghash module, a new parallel multiply-adder is proposed, which can handle several sets of data at the sa...
2010, 32(6): 1520-1524.
doi: 10.3724/SP.J.1146.2009.01092
Abstract:
In the paper, the existence of an Nash equilibrium in the network congestion mode induced by MAC layer competition is proved firstly; Secondly, a cross-layer congestion-control mechanism named WCS is proposed based on WOLF-PHC learning strategy. WCS ...
In the paper, the existence of an Nash equilibrium in the network congestion mode induced by MAC layer competition is proved firstly; Secondly, a cross-layer congestion-control mechanism named WCS is proposed based on WOLF-PHC learning strategy. WCS ...
2010, 32(6): 1485-1488.
doi: 10.3724/SP.J.1146.2009.01396
Abstract:
Knapsack-type public-key cryptosystem is one of several earliest public key cryptosystems, and it is very important to analyze their security. This article argues the security of two new knapsack cryptosystems which are secure against Shamirs attack ...
Knapsack-type public-key cryptosystem is one of several earliest public key cryptosystems, and it is very important to analyze their security. This article argues the security of two new knapsack cryptosystems which are secure against Shamirs attack ...
