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1997 Vol. 19, No. 6
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1997, 19(6): 721-728.
Abstract:
This paper presents two binary track correlation algorithms applying to distributed multisensor data fusion. In the paper, these two binary track correlation criteria are described in detail,and track correlation mass design, multivalency processing ...
This paper presents two binary track correlation algorithms applying to distributed multisensor data fusion. In the paper, these two binary track correlation criteria are described in detail,and track correlation mass design, multivalency processing ...
1997, 19(6): 729-732.
Abstract:
Short-term statistical characteristics of moving sequences is discussed in this paper. To get reasonable results, real time motion image sequences are used, bit numbers of each macroblock after encoding using MPEG(Moving Pictures Experts Group) compr...
Short-term statistical characteristics of moving sequences is discussed in this paper. To get reasonable results, real time motion image sequences are used, bit numbers of each macroblock after encoding using MPEG(Moving Pictures Experts Group) compr...
1997, 19(6): 733-738.
Abstract:
In this paper, a new method for solving multiscale difference equation by the M-band wavelet neural networks is proposed. It is shown that the methods in the paper have many advantages over existed methods and enlarge the range of the solvable equati...
In this paper, a new method for solving multiscale difference equation by the M-band wavelet neural networks is proposed. It is shown that the methods in the paper have many advantages over existed methods and enlarge the range of the solvable equati...
1997, 19(6): 739-744.
Abstract:
This paper first discusses the structure, principle and learning algorithm of Elman neural network model. A modified Ehnan neural network model is then proposed by adding new adjustable weights between the context nodes and the output nodes to enhanc...
This paper first discusses the structure, principle and learning algorithm of Elman neural network model. A modified Ehnan neural network model is then proposed by adding new adjustable weights between the context nodes and the output nodes to enhanc...
1997, 19(6): 745-750.
Abstract:
In the array processing problem, the high-order cumulants not only are capable to reduce the Gaussian noises but also have the aperture extension property. The method of the aperture extension using the fourth-order cumulants are studied and the stru...
In the array processing problem, the high-order cumulants not only are capable to reduce the Gaussian noises but also have the aperture extension property. The method of the aperture extension using the fourth-order cumulants are studied and the stru...
1997, 19(6): 751-755.
Abstract:
In this paper, a new recursive algorithm for adaptive array weight vectors and its systolic array implementing structure are proposed, which are based on the QR factorization algorithms and the idea of the algorithmic engineering. The algorithm can r...
In this paper, a new recursive algorithm for adaptive array weight vectors and its systolic array implementing structure are proposed, which are based on the QR factorization algorithms and the idea of the algorithmic engineering. The algorithm can r...
1997, 19(6): 756-761.
Abstract:
Because the impulse response of an acoustic echo path may be several hundred milliseconds long, acoustic echo cancellation is a long-stranding problem and has not been solved effectively. In order to solve this problem an acoustic echo canceller is p...
Because the impulse response of an acoustic echo path may be several hundred milliseconds long, acoustic echo cancellation is a long-stranding problem and has not been solved effectively. In order to solve this problem an acoustic echo canceller is p...
1997, 19(6): 762-767.
Abstract:
A criterion called Sliding Window Predictive Least-Squares (SWPLS) order selection criterion is presented in this paper by comparison of several typical criteria of AR model order selection. In addition to property of fine order selection the criteri...
A criterion called Sliding Window Predictive Least-Squares (SWPLS) order selection criterion is presented in this paper by comparison of several typical criteria of AR model order selection. In addition to property of fine order selection the criteri...
1997, 19(6): 768-772.
Abstract:
With reference to the air target detected by ultra-wideband(UWB)/impulse radar,this paper discussed transient signal processing techniques.In weak UWB signal detection,wavelet transforms and high order spectrum estimation were preferred.In target cha...
With reference to the air target detected by ultra-wideband(UWB)/impulse radar,this paper discussed transient signal processing techniques.In weak UWB signal detection,wavelet transforms and high order spectrum estimation were preferred.In target cha...
PERFORMANCE ANALYSIS OF CYCLIC ESTIMATORS FOR HARMONICS IN MULTIPLICATIVE AND COMPLEX ADDITIVE NOISE
1997, 19(6): 773-779.
Abstract:
The concern here is retrieval of harmonic observed in multiplicative and complex additive noises. Cyclic mean and correlation statistics have proved to be useful for harmonic retrieval in the presence of real-valued multiplicative and complex-valued ...
The concern here is retrieval of harmonic observed in multiplicative and complex additive noises. Cyclic mean and correlation statistics have proved to be useful for harmonic retrieval in the presence of real-valued multiplicative and complex-valued ...
1997, 19(6): 780-785.
Abstract:
Two methods of distance measuring for sparse-array Synthetic Impulse and Aperture Radar(SIAR) are described, by which a high precision is obtained without high frequency sampling. The effect of errors in angle measuring on distance measuring is discu...
Two methods of distance measuring for sparse-array Synthetic Impulse and Aperture Radar(SIAR) are described, by which a high precision is obtained without high frequency sampling. The effect of errors in angle measuring on distance measuring is discu...
1997, 19(6): 786-791.
Abstract:
The probability distribution of the location error based on range differences is presented first. After having the relationship between two common criteria for measuring location accuracy and the error covariance matrix, the optimal constellation is ...
The probability distribution of the location error based on range differences is presented first. After having the relationship between two common criteria for measuring location accuracy and the error covariance matrix, the optimal constellation is ...
1997, 19(6): 792-796.
Abstract:
Autofocus is an important technique in high resolution Synthetic Aperture Radar(SAR). When autofocus is needed by real-time SAR imaging processing, it must be very computationally effective. Shift and correlate algorithm is such an algorithm. It was ...
Autofocus is an important technique in high resolution Synthetic Aperture Radar(SAR). When autofocus is needed by real-time SAR imaging processing, it must be very computationally effective. Shift and correlate algorithm is such an algorithm. It was ...
1997, 19(6): 797-802.
Abstract:
A new approximation method to distribution function of conductivity for electrical impedance tomography image reconstruction algorithm is proposed in this paper. This method is called continuous interpolation function method. Compared with the conven...
A new approximation method to distribution function of conductivity for electrical impedance tomography image reconstruction algorithm is proposed in this paper. This method is called continuous interpolation function method. Compared with the conven...
1997, 19(6): 803-809.
Abstract:
The developments of Personal Communication and Mobile Computing stimulate the introducation of integrated traffics into mobile communication. CDMA is suitable for transmission of integrated traffics. In this paper, we introduced an admission control ...
The developments of Personal Communication and Mobile Computing stimulate the introducation of integrated traffics into mobile communication. CDMA is suitable for transmission of integrated traffics. In this paper, we introduced an admission control ...
1997, 19(6): 810-813.
Abstract:
This paper constructs the Hash algorithm based on strong one-way permutation by the composition of one-way permutation and perfect permutation on n and proves that its security is equivalent to the one-way permutation that can not be inversed in poly...
This paper constructs the Hash algorithm based on strong one-way permutation by the composition of one-way permutation and perfect permutation on n and proves that its security is equivalent to the one-way permutation that can not be inversed in poly...
1997, 19(6): 814-819.
Abstract:
In this paper, the mean cycle times of the slotted access channel are analyzed by using the average cycle method. Analytic formulae for mean values of a successful period, a colliding period and an idle period are derived. Also, the upper bounds on t...
In this paper, the mean cycle times of the slotted access channel are analyzed by using the average cycle method. Analytic formulae for mean values of a successful period, a colliding period and an idle period are derived. Also, the upper bounds on t...
1997, 19(6): 820-823.
Abstract:
This paper proposes a method to improve H.261 video coder by modifying the block matching motion estimation algorithm. We think that the traditional block matching algorithm based on the least mean square error or absolute error criteria is not suita...
This paper proposes a method to improve H.261 video coder by modifying the block matching motion estimation algorithm. We think that the traditional block matching algorithm based on the least mean square error or absolute error criteria is not suita...
1997, 19(6): 824-827.
Abstract:
In this paper, Chua s circuit is modified by adding an RC parallel circuit into the L-arm in Chua s circuit. The bifurcation, control and synchronization of the modified Chua s circuit have been studied by computer simulation.
In this paper, Chua s circuit is modified by adding an RC parallel circuit into the L-arm in Chua s circuit. The bifurcation, control and synchronization of the modified Chua s circuit have been studied by computer simulation.
1997, 19(6): 828-835.
Abstract:
By applying switch-signal theory, the theory of transmission current-switches based on symmetric ternary logic is proposed, this theory is suitable to design symmetric ternary current-mode CMOS circuits. The symmetric ternary current-mode CMOS circui...
By applying switch-signal theory, the theory of transmission current-switches based on symmetric ternary logic is proposed, this theory is suitable to design symmetric ternary current-mode CMOS circuits. The symmetric ternary current-mode CMOS circui...
1997, 19(6): 843-846.
Abstract:
Through selecting the network s competition rules by the nature of layout problem, an algorithm based on the competitive learning and self-organization characteristics of Self-Organization Feature Mapping(SOFM) neural network for gate matrix layout i...
Through selecting the network s competition rules by the nature of layout problem, an algorithm based on the competitive learning and self-organization characteristics of Self-Organization Feature Mapping(SOFM) neural network for gate matrix layout i...
1997, 19(6): 847-851.
Abstract:
In this article, self-rotation-shrinking-series of m-series are introduced; their elegant algebraic structure and nice cryptic features are discussed. For practical application, a linking scheme with a little stores and judgements is proposed.
In this article, self-rotation-shrinking-series of m-series are introduced; their elegant algebraic structure and nice cryptic features are discussed. For practical application, a linking scheme with a little stores and judgements is proposed.
1997, 19(6): 852-854.
Abstract:
Construction and enumeration of correlation-immune Boolean functions of m-order are discussed in this paper and the formula of lower bounds given by the authors (1997) formerly is improved greatly.
Construction and enumeration of correlation-immune Boolean functions of m-order are discussed in this paper and the formula of lower bounds given by the authors (1997) formerly is improved greatly.
1997, 19(6): 836-842.
Abstract:
This paper reports on current developments in the area of very low bit-rate video coding, including algorithms and standardization. The advances are summarized in several areas, among them motion compensation/transformation (MC/T)techniques, model-ba...
This paper reports on current developments in the area of very low bit-rate video coding, including algorithms and standardization. The advances are summarized in several areas, among them motion compensation/transformation (MC/T)techniques, model-ba...
