Email alert
1998 Vol. 20, No. 6
Display Method:
1998, 20(6): 721-726.
Abstract:
A new multiscale edge detection method is presented, which is based on vision feature of edge and wavelet transform. The novel features of image edge based on human being vision characters are described. The scales of wavelet transform are adjusted a...
A new multiscale edge detection method is presented, which is based on vision feature of edge and wavelet transform. The novel features of image edge based on human being vision characters are described. The scales of wavelet transform are adjusted a...
1998, 20(6): 727-732.
Abstract:
Clustering algorithms in feature space are important methods in image segmentation. The choice of the effective feature parameters and the construction of the clustering method are key problems encountered with clustering algorithms. In this paper we...
Clustering algorithms in feature space are important methods in image segmentation. The choice of the effective feature parameters and the construction of the clustering method are key problems encountered with clustering algorithms. In this paper we...
1998, 20(6): 733-738.
Abstract:
The paper describes an Adaptive Interacting Multiple-model(AIMM) algorithm for use in manoeuvring target tracking. The algorithm does not need predefined models. A two-stage Kalman estimator is used to estimate the acceleration of the target. This ac...
The paper describes an Adaptive Interacting Multiple-model(AIMM) algorithm for use in manoeuvring target tracking. The algorithm does not need predefined models. A two-stage Kalman estimator is used to estimate the acceleration of the target. This ac...
1998, 20(6): 739-744.
Abstract:
This paper presents a method to improve the estimation accuracy of a tracking Kalman filter (TKF)by using a multilayer neural network(MNN). The estimation accuracy of the TKF is degraded due to the uncertainties that cannot be expressed by the linear...
This paper presents a method to improve the estimation accuracy of a tracking Kalman filter (TKF)by using a multilayer neural network(MNN). The estimation accuracy of the TKF is degraded due to the uncertainties that cannot be expressed by the linear...
1998, 20(6): 745-749.
Abstract:
Based on a parallel uniform linear array and fourth order cumulant, a new approach for estimating multiple spatial narrow-band signal 2-D directions of arrival separately in the arbitrary Gaussian noise environment is presented. With flexible definit...
Based on a parallel uniform linear array and fourth order cumulant, a new approach for estimating multiple spatial narrow-band signal 2-D directions of arrival separately in the arbitrary Gaussian noise environment is presented. With flexible definit...
1998, 20(6): 750-755.
Abstract:
In this paper, a fourth-order cumulant-based ESPRIT DOA estimation method is presented for arbitrary array. The method is robust to the channel uncertainty model errors with any two channels characteristics known. The method is verified by the simula...
In this paper, a fourth-order cumulant-based ESPRIT DOA estimation method is presented for arbitrary array. The method is robust to the channel uncertainty model errors with any two channels characteristics known. The method is verified by the simula...
1998, 20(6): 756-762.
Abstract:
This paper presents some kinds of non-linear models for time series. The structure and training methods for each model have been analysed and studied. The experimental results for some common time series are given.
This paper presents some kinds of non-linear models for time series. The structure and training methods for each model have been analysed and studied. The experimental results for some common time series are given.
1998, 20(6): 763-770.
Abstract:
The properties of normal orthogonal duality of binary sequences are investigated by means of RCF of binary sequences. In order to prove the theorems given in this paper, the concept of pure code segment is introduced. And then, the relations between ...
The properties of normal orthogonal duality of binary sequences are investigated by means of RCF of binary sequences. In order to prove the theorems given in this paper, the concept of pure code segment is introduced. And then, the relations between ...
1998, 20(6): 771-774.
Abstract:
A new algorithm with the complexity O(logm) is presented to compute inverses in the finite field GF(2m) based on the normal basis representations and the Massey-Omura s multipliers. The inverse in GF(2m) can be computed with [log2(m-1)]+w(m-1)-1 mult...
A new algorithm with the complexity O(logm) is presented to compute inverses in the finite field GF(2m) based on the normal basis representations and the Massey-Omura s multipliers. The inverse in GF(2m) can be computed with [log2(m-1)]+w(m-1)-1 mult...
1998, 20(6): 775-780.
Abstract:
In this paper, the self-correlation functions of primitive M-sequences are discussed, the general solutions of some autocorrelation functions are presented. These general solutions result in that the auto-correlation functions can be obtained by the ...
In this paper, the self-correlation functions of primitive M-sequences are discussed, the general solutions of some autocorrelation functions are presented. These general solutions result in that the auto-correlation functions can be obtained by the ...
1998, 20(6): 781-786.
Abstract:
In TCP/IP networks, some routing decision and flow control algorithms can guarantee only partitioned optimazation of networks. In this paper, we use Modern Control Theory to develop a new method to judge the entir stability of date communication netw...
In TCP/IP networks, some routing decision and flow control algorithms can guarantee only partitioned optimazation of networks. In this paper, we use Modern Control Theory to develop a new method to judge the entir stability of date communication netw...
1998, 20(6): 787-793.
Abstract:
An algorithm analysing multi-output feedforward network system is discussed in this paper, the basic idea of the algorithm is to collect and utilize information leak of input information at multiple output ends. As an application, a class of importan...
An algorithm analysing multi-output feedforward network system is discussed in this paper, the basic idea of the algorithm is to collect and utilize information leak of input information at multiple output ends. As an application, a class of importan...
1998, 20(6): 794-798.
Abstract:
This paper introduces the concept of stability of 3-valued logical functions and examines probability characterization of stability. Criterion of stability of 3-valued logical functions is given and a typical method of constructing stable 3-valued lo...
This paper introduces the concept of stability of 3-valued logical functions and examines probability characterization of stability. Criterion of stability of 3-valued logical functions is given and a typical method of constructing stable 3-valued lo...
1998, 20(6): 799-805.
Abstract:
This paper presents the scheme and its implementation of a video decoder, which can complete real-time decoding the MPEG-2 based coded bit stream. This scheme adopts the parallel processing technique, the operation in pipe line and a large quantity o...
This paper presents the scheme and its implementation of a video decoder, which can complete real-time decoding the MPEG-2 based coded bit stream. This scheme adopts the parallel processing technique, the operation in pipe line and a large quantity o...
1998, 20(6): 806-809.
Abstract:
Three new concepts of the monostatic radar system: co-polarization match factor, cross-polarization match factor, adaptive polarization match factor, are presented. Their easily calculated expressions are given. Then the polarization corresponding to...
Three new concepts of the monostatic radar system: co-polarization match factor, cross-polarization match factor, adaptive polarization match factor, are presented. Their easily calculated expressions are given. Then the polarization corresponding to...
1998, 20(6): 810-814.
Abstract:
The concept of tree topology Bragg Optical Fiber Grating(BOFG) distribution sensing array is introduced.Comparing with the serrial topology array,this type of arrays has the following advantages.First,it is not necessary that the central reflecting w...
The concept of tree topology Bragg Optical Fiber Grating(BOFG) distribution sensing array is introduced.Comparing with the serrial topology array,this type of arrays has the following advantages.First,it is not necessary that the central reflecting w...
1998, 20(6): 815-820.
Abstract:
This papet stuides parallel EIS type light addressable semiconductor humor analysis sensor based on light addressable potentiometric sensor.The effects of the basis voltage,light modulation frequencies and light radiation power on photovoltage for th...
This papet stuides parallel EIS type light addressable semiconductor humor analysis sensor based on light addressable potentiometric sensor.The effects of the basis voltage,light modulation frequencies and light radiation power on photovoltage for th...
1998, 20(6): 821-827.
Abstract:
This paper combines the differential-Thompson transformation involved in hydromechanics with the finite difference time domain (FDTD) technique to form Thompson-FDTD method. This method is applied by the first time to calculate the electromagnetic sc...
This paper combines the differential-Thompson transformation involved in hydromechanics with the finite difference time domain (FDTD) technique to form Thompson-FDTD method. This method is applied by the first time to calculate the electromagnetic sc...
1998, 20(6): 828-834.
Abstract:
In this paper, asymmetrical coplanar lines in free space are analyzed using confor-mal mapping techniques, and the exact solutions are obtained. Analytic closed-form expressions for the effective dielectric constant, the capacitance per unit length, ...
In this paper, asymmetrical coplanar lines in free space are analyzed using confor-mal mapping techniques, and the exact solutions are obtained. Analytic closed-form expressions for the effective dielectric constant, the capacitance per unit length, ...
1998, 20(6): 835-839.
Abstract:
This paper presents a new numerical method, which is based on boundary element method (BEM), for the computation of resonant frequency, external Q value and field distribution of the waveguide loaded cavity. It is shown that BEM has mamy advantages a...
This paper presents a new numerical method, which is based on boundary element method (BEM), for the computation of resonant frequency, external Q value and field distribution of the waveguide loaded cavity. It is shown that BEM has mamy advantages a...
1998, 20(6): 840-846.
Abstract:
The concept of fault tolerance of feedforward neural networks and its contents for studying are given clearly and specially. Then, systematically and concisely, various methods for analyzing and increasing the fault tolerance of feedforward neural ne...
The concept of fault tolerance of feedforward neural networks and its contents for studying are given clearly and specially. Then, systematically and concisely, various methods for analyzing and increasing the fault tolerance of feedforward neural ne...
1998, 20(6): 847-851.
Abstract:
A decoding strategy for nonlinear codes using a neural network is presented. Within the capacity of error correction, it can correct and detect errors of general nonlinear codes which have some specific code distance with zero error probability. This...
A decoding strategy for nonlinear codes using a neural network is presented. Within the capacity of error correction, it can correct and detect errors of general nonlinear codes which have some specific code distance with zero error probability. This...
1998, 20(6): 852-855.
Abstract:
Emission, translation, modulation and diagnosis of short pulse intense relativistic hollow electron beams (IREBs) of a L-band relativistic klystron amplifier are described in this paper. The hollow electron beams about 500kV, 4.5kA, diameter 54.5mm, ...
Emission, translation, modulation and diagnosis of short pulse intense relativistic hollow electron beams (IREBs) of a L-band relativistic klystron amplifier are described in this paper. The hollow electron beams about 500kV, 4.5kA, diameter 54.5mm, ...
