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1993 Vol. 15, No. 3
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1993, 15(3): 225-234.
Abstract:
Two computationally efficient state-space structures for general 2-D digital systems described by Roesser s local state-space model are presented. Some properties of controllability and observability Gramians of the above two structures are derived. ...
Two computationally efficient state-space structures for general 2-D digital systems described by Roesser s local state-space model are presented. Some properties of controllability and observability Gramians of the above two structures are derived. ...
1993, 15(3): 235-241.
Abstract:
Some new methods for reducing the multiplying noise in the digital images, which are mainly the one of weighting and adding methods, are proposed, after that the characteristics of the noise is studied. The theory is analysed with the common model of...
Some new methods for reducing the multiplying noise in the digital images, which are mainly the one of weighting and adding methods, are proposed, after that the characteristics of the noise is studied. The theory is analysed with the common model of...
1993, 15(3): 242-252.
Abstract:
A Homotopy continuation adaptive filtering algorithm is proposed in this paper. The algorithm introduces the homotopy continuation method into the IIR adaptive filtering, which may provide a high stability for IIR filter without any stability monitor...
A Homotopy continuation adaptive filtering algorithm is proposed in this paper. The algorithm introduces the homotopy continuation method into the IIR adaptive filtering, which may provide a high stability for IIR filter without any stability monitor...
1993, 15(3): 253-260.
Abstract:
The 3-D motion parameters of object in space can be solved by using the 2-D optical flow and projection coordinates in image plane-This algorithm is linear, if the dimension of surface structure of motion object is smaller than the distance between t...
The 3-D motion parameters of object in space can be solved by using the 2-D optical flow and projection coordinates in image plane-This algorithm is linear, if the dimension of surface structure of motion object is smaller than the distance between t...
1993, 15(3): 261-267.
Abstract:
According to the next-state equations of various ternary flip-flops (tri-flop), which are based upon ternary modular algebra, various ternary flip flops are implemented by using universal-logic-module Uhs. Based on it, ternary sequential circuits are...
According to the next-state equations of various ternary flip-flops (tri-flop), which are based upon ternary modular algebra, various ternary flip flops are implemented by using universal-logic-module Uhs. Based on it, ternary sequential circuits are...
1993, 15(3): 268-273.
Abstract:
Generalized equivalent two-port measurement equations for reciprocal multiport network are presented, and problems using mutual equivalent parameters of the measured network in S-parameter measurements have been solved in this paper. This would short...
Generalized equivalent two-port measurement equations for reciprocal multiport network are presented, and problems using mutual equivalent parameters of the measured network in S-parameter measurements have been solved in this paper. This would short...
1993, 15(3): 274-278.
Abstract:
The multi-layered media modeled by the Cantor bar are a type of fractal structures, which have been found wide applications in some optical areas, If they are introduced into microwave fields, a new kind of microwave devices will be developed. In thi...
The multi-layered media modeled by the Cantor bar are a type of fractal structures, which have been found wide applications in some optical areas, If they are introduced into microwave fields, a new kind of microwave devices will be developed. In thi...
1993, 15(3): 279-286.
Abstract:
The dispersion characteristics of a cylindrical dielectric waveguide with periodic metallic strips are analyzed by Galerkin s method. After obtaining the rigorous dispersion equation, the dispersion curves for both TE and TM modes are calculateld. Th...
The dispersion characteristics of a cylindrical dielectric waveguide with periodic metallic strips are analyzed by Galerkin s method. After obtaining the rigorous dispersion equation, the dispersion curves for both TE and TM modes are calculateld. Th...
1993, 15(3): 287-293.
Abstract:
The propagation matrix method of electromagnetic waves in stratified chiral media is introduced for the first time, and the general expressions of propagation matrix are derived. The reflection and transmission properties of electromagnetic waves at ...
The propagation matrix method of electromagnetic waves in stratified chiral media is introduced for the first time, and the general expressions of propagation matrix are derived. The reflection and transmission properties of electromagnetic waves at ...
1993, 15(3): 300-304.
Abstract:
In this paper, the basic theory of range-alignment in Inverse Synthetic Aperture Radar (ISAR) imaging is analysed. Two new methods of range-alignment are proposed. One is peak point alignment, and another is direct range-alignment. Based on the measu...
In this paper, the basic theory of range-alignment in Inverse Synthetic Aperture Radar (ISAR) imaging is analysed. Two new methods of range-alignment are proposed. One is peak point alignment, and another is direct range-alignment. Based on the measu...
1993, 15(3): 305-309.
Abstract:
A new universal preprocessing method is proposed to estimate angles of arrival with high resolution, which is applicable to one- or two-dimensional high resolution processing based on arbitrary center-symmetric arrays (such as uniform linear arrays, ...
A new universal preprocessing method is proposed to estimate angles of arrival with high resolution, which is applicable to one- or two-dimensional high resolution processing based on arbitrary center-symmetric arrays (such as uniform linear arrays, ...
1993, 15(3): 310-314.
Abstract:
A new spectral estimation method based on the least mean square error of the forward linear prediction of AR model is introduced in this paper. The spectral estimation is obtained by the AR parameters estimated by the conjugate gradient method. The s...
A new spectral estimation method based on the least mean square error of the forward linear prediction of AR model is introduced in this paper. The spectral estimation is obtained by the AR parameters estimated by the conjugate gradient method. The s...
1993, 15(3): 315-319.
Abstract:
This paper develops a divided-step square root Kalman filtering theory based on the classical square root Kalman filtering and the gradient algorithm. Using these two algorithms, various simplified algorithms can be formed. Their computation time is ...
This paper develops a divided-step square root Kalman filtering theory based on the classical square root Kalman filtering and the gradient algorithm. Using these two algorithms, various simplified algorithms can be formed. Their computation time is ...
1993, 15(3): 320-322.
Abstract:
According to the quality of symmetrical sequence for SBOS neighbouring logic, a general formula for determining the vertex subset of left and right bounds-of SBOS bound sequence is given. A foundation of practical algorithm which can be used to selec...
According to the quality of symmetrical sequence for SBOS neighbouring logic, a general formula for determining the vertex subset of left and right bounds-of SBOS bound sequence is given. A foundation of practical algorithm which can be used to selec...
1993, 15(3): 323-327.
Abstract:
The imperfection in noise circ uit theory is discussed, and then a branch set spectral analysis method for electronic noise is given. It makes the accuracy and efficiency of noise calculation remarkably improved. Based on this method, a computer prog...
The imperfection in noise circ uit theory is discussed, and then a branch set spectral analysis method for electronic noise is given. It makes the accuracy and efficiency of noise calculation remarkably improved. Based on this method, a computer prog...
1993, 15(3): 328-332.
Abstract:
The basic idea of marching-on-in-frequency method is that the discretized integral equation is solved by using one of the iterative approaches, and the initial estimates are produced by using an extrapolation scheme based on error minimization. The i...
The basic idea of marching-on-in-frequency method is that the discretized integral equation is solved by using one of the iterative approaches, and the initial estimates are produced by using an extrapolation scheme based on error minimization. The i...
1993, 15(3): 333-336.
Abstract:
Multi-center cylindrical harmonic function expansion method is introduced for formulating the two-dimensional scattering problems in which the scattered fields are represented in an expansion terms of the cylindrical harmonic functions at some proper...
Multi-center cylindrical harmonic function expansion method is introduced for formulating the two-dimensional scattering problems in which the scattered fields are represented in an expansion terms of the cylindrical harmonic functions at some proper...
1993, 15(3): 294-299.
Abstract:
It is described in this paper that the solar cells with ultra-high efficiency are proposed by A. Marks, which can convert 60-80% of the accepted sunlight into electric energy. The existed problems on his design scheme are analyzed, and the difficulti...
It is described in this paper that the solar cells with ultra-high efficiency are proposed by A. Marks, which can convert 60-80% of the accepted sunlight into electric energy. The existed problems on his design scheme are analyzed, and the difficulti...
