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2001 Vol. 23, No. 9
Display Method:
2001, 23(9): 833-840.
Abstract:
Watermarking, as a new technique mainly used for IPR protection and authentication, has become a research hotspot not long after its appearance. Many effective watermarking algorithms have been proposed. But the mature of watermark technology is not ...
Watermarking, as a new technique mainly used for IPR protection and authentication, has become a research hotspot not long after its appearance. Many effective watermarking algorithms have been proposed. But the mature of watermark technology is not ...
2001, 23(9): 841-846.
Abstract:
An identification scheme based on parity check matrix of error-correcting codes over GF(2) was proposed in the paper A New Paradigm for Public Key Identification by J. Stern(1996), a new identification scheme based on parity check matrix of rank dist...
An identification scheme based on parity check matrix of error-correcting codes over GF(2) was proposed in the paper A New Paradigm for Public Key Identification by J. Stern(1996), a new identification scheme based on parity check matrix of rank dist...
2001, 23(9): 847-853.
Abstract:
Multiuser Detection (MUD) is a key technique in DS/CDMA systems. Antenna array has also promoted the investigation of Multiple Input Multiple Output(MIMO) system. In this paper a MUD method combined with MIMO considerations is proposed for multiuser ...
Multiuser Detection (MUD) is a key technique in DS/CDMA systems. Antenna array has also promoted the investigation of Multiple Input Multiple Output(MIMO) system. In this paper a MUD method combined with MIMO considerations is proposed for multiuser ...
2001, 23(9): 854-860.
Abstract:
This paper describes two kinds of AAL2 packet voice multiplexers based on input and output bit dropping. An algorithm for determining the bit dropping thresholds using the number of voice packets to determine the thresholds is presented with relevant...
This paper describes two kinds of AAL2 packet voice multiplexers based on input and output bit dropping. An algorithm for determining the bit dropping thresholds using the number of voice packets to determine the thresholds is presented with relevant...
2001, 23(9): 861-867.
Abstract:
Total variation based image restoration and reconstruction lead to a kind of minimization problem that turns out to be a nonlinear integro-differential equation of elliptic type. An effective linearization and. discretization method is essential for ...
Total variation based image restoration and reconstruction lead to a kind of minimization problem that turns out to be a nonlinear integro-differential equation of elliptic type. An effective linearization and. discretization method is essential for ...
2001, 23(9): 868-874.
Abstract:
This paper proposes a novel parallel algorithm for template matching of image division block based on a K-ary 2-cube network SIMD computer. For the template matching on an N by N image, M by M template and K by K processing unit array (M K, N = BK, B...
This paper proposes a novel parallel algorithm for template matching of image division block based on a K-ary 2-cube network SIMD computer. For the template matching on an N by N image, M by M template and K by K processing unit array (M K, N = BK, B...
2001, 23(9): 875-878.
Abstract:
In this paper, a hybrid aJgorithm based on the combination of genetic algorithm and gradient method is proposed. It can help the gradient method to skip the local optimum and achieve the global minimum. The convergence of the hybrid algorithm is prov...
In this paper, a hybrid aJgorithm based on the combination of genetic algorithm and gradient method is proposed. It can help the gradient method to skip the local optimum and achieve the global minimum. The convergence of the hybrid algorithm is prov...
2001, 23(9): 879-889.
Abstract:
This paper studies the attraction characteristics of a kind of symmetric discrete Hopfield neural networks, the network with ri-cube as its structure and connection situation, called n-cube network. The structure of the attraction states/cycles and t...
This paper studies the attraction characteristics of a kind of symmetric discrete Hopfield neural networks, the network with ri-cube as its structure and connection situation, called n-cube network. The structure of the attraction states/cycles and t...
2001, 23(9): 890-898.
Abstract:
In this paper, a 3-D imaging technique for interferometric inverse synthetic aperture radar is presented. And the criteria of determing and the angle glint in interferometric angle measurement are given. Furthermore, the 3-D imaging technique under t...
In this paper, a 3-D imaging technique for interferometric inverse synthetic aperture radar is presented. And the criteria of determing and the angle glint in interferometric angle measurement are given. Furthermore, the 3-D imaging technique under t...
2001, 23(9): 899-904.
Abstract:
This paper presents auther s primary results in the simulation study on polari-metric SAR. First, the mathematical model of the raw returns of multi-point targets received by the polarimetric SAR is established. Then four complex images of different ...
This paper presents auther s primary results in the simulation study on polari-metric SAR. First, the mathematical model of the raw returns of multi-point targets received by the polarimetric SAR is established. Then four complex images of different ...
2001, 23(9): 905-911.
Abstract:
In ranging radar, range ambiguity usually exists. Computing amount of overall search algorithm to solve the problem is analyzed, and it is pointed out that this algorithm is unsuitable for ranging in real time. Then two fast algorithms that can attai...
In ranging radar, range ambiguity usually exists. Computing amount of overall search algorithm to solve the problem is analyzed, and it is pointed out that this algorithm is unsuitable for ranging in real time. Then two fast algorithms that can attai...
2001, 23(9): 912-918.
Abstract:
The method of monopulse radar 3-D imaging in stepped tracking mode is presented. Then the amplitude linear modulation of error signals in stepped tracking mode is analyzed with its compensation method followed and so the problem of precisely tracking...
The method of monopulse radar 3-D imaging in stepped tracking mode is presented. Then the amplitude linear modulation of error signals in stepped tracking mode is analyzed with its compensation method followed and so the problem of precisely tracking...
2001, 23(9): 919-923.
Abstract:
In this paper, based on LPC adaptive forward-backward quantization, a novel variable-rate MELP speech coder is proposed, in which linear prediction is done by using either the current (forward LPC) or previously decoded (backward LPC) speech frames. ...
In this paper, based on LPC adaptive forward-backward quantization, a novel variable-rate MELP speech coder is proposed, in which linear prediction is done by using either the current (forward LPC) or previously decoded (backward LPC) speech frames. ...
2001, 23(9): 924-928.
Abstract:
In this paper, based on conventional redundancy optimization and the genetic algorithm, a method of fuzzy redundancy optimization is studied, by which fuzzy objectives and fuzzy constraints are linear and nonlinear membership functions respectively. ...
In this paper, based on conventional redundancy optimization and the genetic algorithm, a method of fuzzy redundancy optimization is studied, by which fuzzy objectives and fuzzy constraints are linear and nonlinear membership functions respectively. ...
2001, 23(9): 929-932.
Abstract:
The mechanics of Field Electron Emission (FEE) from planar thin films of wide band-gap have been studied systematically. The basic model is the electron tunneling through the potential barriers at the interfaces, on the other hand the effect of scatt...
The mechanics of Field Electron Emission (FEE) from planar thin films of wide band-gap have been studied systematically. The basic model is the electron tunneling through the potential barriers at the interfaces, on the other hand the effect of scatt...
2001, 23(9): 933-936.
Abstract:
This paper presents the design of pre-filter which can meet the requirements of airborne operational L-SAR system. Pre-filtering processing is carried out with the newest high-speed ADSP21062 chip from AD company. Pre-filtering ratio is changable acc...
This paper presents the design of pre-filter which can meet the requirements of airborne operational L-SAR system. Pre-filtering processing is carried out with the newest high-speed ADSP21062 chip from AD company. Pre-filtering ratio is changable acc...
