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1999 Vol. 21, No. 6
Display Method:
1999, 21(6): 721-728.
Abstract:
The focus in this paper is on the discussion of the approximation performance of the Mallat algorithm under biorthogonal wavelet bases with sampling property. The asymptotic formulae of the approximation errors of the Mallat algorithm and sharper qua...
The focus in this paper is on the discussion of the approximation performance of the Mallat algorithm under biorthogonal wavelet bases with sampling property. The asymptotic formulae of the approximation errors of the Mallat algorithm and sharper qua...
1999, 21(6): 735-742.
Abstract:
In phase space reconstruction of time sequences,the selection of embedding dimension is important.Based on the idea of looking at the behavior of enar neighbors under changes in the reconstruction is constructed.This method has asound theoretical bas...
In phase space reconstruction of time sequences,the selection of embedding dimension is important.Based on the idea of looking at the behavior of enar neighbors under changes in the reconstruction is constructed.This method has asound theoretical bas...
1999, 21(6): 743-751.
Abstract:
A new kind of method of prototype waveforme extraction and blockwise interpolation in linear predictive residual(LPR) domain was suggested by aligning phase of Pitch-Cycle waveform(PCW) along the time axis one by one. This method may avoid the percep...
A new kind of method of prototype waveforme extraction and blockwise interpolation in linear predictive residual(LPR) domain was suggested by aligning phase of Pitch-Cycle waveform(PCW) along the time axis one by one. This method may avoid the percep...
1999, 21(6): 752-758.
Abstract:
In this paper we propose a sequential learning neural net which consists of the bounded weight adjustment algorithm and structure adaptive adjustment method. This network is characterized of efficiently learning the knowledge of new samples in series...
In this paper we propose a sequential learning neural net which consists of the bounded weight adjustment algorithm and structure adaptive adjustment method. This network is characterized of efficiently learning the knowledge of new samples in series...
1999, 21(6): 759-764.
Abstract:
This paper presents a hardware implementation approach for realizing simple BP (Backward Propagation) neural network. The full current-mode analog circuits are used to form neuron modules, and a simple BP network is build using basic modules. This ne...
This paper presents a hardware implementation approach for realizing simple BP (Backward Propagation) neural network. The full current-mode analog circuits are used to form neuron modules, and a simple BP network is build using basic modules. This ne...
1999, 21(6): 765-770.
Abstract:
This paper describes a short range target location system based on the range difference of T-R4 multistatic radar system with FMCW signal. A new method is proposed to determine the location and length of a thin cylindrical target making use of the hi...
This paper describes a short range target location system based on the range difference of T-R4 multistatic radar system with FMCW signal. A new method is proposed to determine the location and length of a thin cylindrical target making use of the hi...
1999, 21(6): 771-778.
Abstract:
This paper presents an improved rank one phase error estimation(ROPE) autofo-cusing technique. Compared with ROPE, the improved algorithm has two distinct advantages: first, its model is more actual, so its property of robustness is better; second, a...
This paper presents an improved rank one phase error estimation(ROPE) autofo-cusing technique. Compared with ROPE, the improved algorithm has two distinct advantages: first, its model is more actual, so its property of robustness is better; second, a...
1999, 21(6): 779-785.
Abstract:
A new greatest of selection CFAR detector (TMGO) based on trimmed mean (TM) is proposed in this paper. It takes the greatest value of two local estimations created by leading and lagging reference window which apply TM method as a noise power estimat...
A new greatest of selection CFAR detector (TMGO) based on trimmed mean (TM) is proposed in this paper. It takes the greatest value of two local estimations created by leading and lagging reference window which apply TM method as a noise power estimat...
1999, 21(6): 786-790.
Abstract:
Array-fed parabolic reflector and shaped reflector with a single feed are usually used to be contoured beam satellite antenna. In the paper, in accordance with the feature of array feeds of the former and the complex reflector surface shape of the la...
Array-fed parabolic reflector and shaped reflector with a single feed are usually used to be contoured beam satellite antenna. In the paper, in accordance with the feature of array feeds of the former and the complex reflector surface shape of the la...
1999, 21(6): 791-796.
Abstract:
A stable recursive algorithm is presented for the transient simulation of interconnect systems in the high-speed VLSI and multichip modules (MCMs). The Taylor approximant are employed in the frequency domain, then a set of recursive formulas is deriv...
A stable recursive algorithm is presented for the transient simulation of interconnect systems in the high-speed VLSI and multichip modules (MCMs). The Taylor approximant are employed in the frequency domain, then a set of recursive formulas is deriv...
1999, 21(6): 797-805.
Abstract:
Based on the skew-circular convolution distributed algorithm presented by W.Li(1991). A 88 2-D DCT/IDCT processor has been designed using FPGAs, which can be used for HDTV s decoder or other signal and information processing systems. It can be used t...
Based on the skew-circular convolution distributed algorithm presented by W.Li(1991). A 88 2-D DCT/IDCT processor has been designed using FPGAs, which can be used for HDTV s decoder or other signal and information processing systems. It can be used t...
1999, 21(6): 806-813.
Abstract:
This paper prsents a theory of three essential circuit elements (signal, network and load) for surmounting failure of Boolean algebra. First, the paper analyzes the cauese of Boolean algebra failure in digital circuits. Second, on the basis of Perfec...
This paper prsents a theory of three essential circuit elements (signal, network and load) for surmounting failure of Boolean algebra. First, the paper analyzes the cauese of Boolean algebra failure in digital circuits. Second, on the basis of Perfec...
1999, 21(6): 814-819.
Abstract:
The theory of participating logical function and logical function complementary formula are used in this paper, a series of importent laws are obtained, the state change process of guessed equivalant two variables logical complementary formula is use...
The theory of participating logical function and logical function complementary formula are used in this paper, a series of importent laws are obtained, the state change process of guessed equivalant two variables logical complementary formula is use...
1999, 21(6): 820-824.
Abstract:
This paper presents a fast global optimization neural network and applies it to the data fusion. This neural network is based on the global property of genetic algorithm and the high speed property of expectation maximization (EM) algorithm. The simu...
This paper presents a fast global optimization neural network and applies it to the data fusion. This neural network is based on the global property of genetic algorithm and the high speed property of expectation maximization (EM) algorithm. The simu...
1999, 21(6): 825-828.
Abstract:
This paper proposes a novel method to obtain a simple analytical solution to extrapolation problem for band-limited signals, which is much easier than prolate spherical wave function expansion method. The corresponding algorithm for extrapolation is ...
This paper proposes a novel method to obtain a simple analytical solution to extrapolation problem for band-limited signals, which is much easier than prolate spherical wave function expansion method. The corresponding algorithm for extrapolation is ...
1999, 21(6): 829-832.
Abstract:
This paper presents a novel method for establishing 3-D human face wireframe model. The new model is suitable for the 3-D model-based face image coding.
This paper presents a novel method for establishing 3-D human face wireframe model. The new model is suitable for the 3-D model-based face image coding.
1999, 21(6): 833-837.
Abstract:
This paper presents a (t + 1,n)-threshold key escrow system with tolerance of t failure or withholding escrow agents on the basis of key generating of Ref.[1] and key spitting of Ref.[2], which can prevent from subliminal key attack, verify the piece...
This paper presents a (t + 1,n)-threshold key escrow system with tolerance of t failure or withholding escrow agents on the basis of key generating of Ref.[1] and key spitting of Ref.[2], which can prevent from subliminal key attack, verify the piece...
1999, 21(6): 838-842.
Abstract:
This paper proposes a multichannel switch channel allocation network, shows the principle of multichannel bandwidth allocation, completely explains the method of bandwidth allocation at transmission time.
This paper proposes a multichannel switch channel allocation network, shows the principle of multichannel bandwidth allocation, completely explains the method of bandwidth allocation at transmission time.
1999, 21(6): 843-847.
Abstract:
With bispectrum analysis, an AR model parametric bispectrum estimation is presented for radar target echoes. A detail analysis of actual aircraft echoes and a reasonable selection of target signature are made, with a formation of signature vector for...
With bispectrum analysis, an AR model parametric bispectrum estimation is presented for radar target echoes. A detail analysis of actual aircraft echoes and a reasonable selection of target signature are made, with a formation of signature vector for...
1999, 21(6): 848-850.
Abstract:
Self-consistent non-linear theory is applied to simulate the high harmonic gyrotron with inner and outer slotted structure, it is found that the structure is advantageous to the interaction, the interaction efficiency is above 30%.
Self-consistent non-linear theory is applied to simulate the high harmonic gyrotron with inner and outer slotted structure, it is found that the structure is advantageous to the interaction, the interaction efficiency is above 30%.
1999, 21(6): 851-855.
Abstract:
A method using space waves to detect the permittivites of media in half space is performed in the laboratory: transmitting a wave with both parallel and perpendicular polarizations simultanlously by a born and receiving the amplitudes and phases of t...
A method using space waves to detect the permittivites of media in half space is performed in the laboratory: transmitting a wave with both parallel and perpendicular polarizations simultanlously by a born and receiving the amplitudes and phases of t...
1999, 21(6): 729-734.
Abstract:
A new method for recognition and tracking of image object is advanced.The recognition and tracking of image object is carried out by drawing the human visual property,and by means of the image object indentifier, which is used to recognize and repres...
A new method for recognition and tracking of image object is advanced.The recognition and tracking of image object is carried out by drawing the human visual property,and by means of the image object indentifier, which is used to recognize and repres...
