Email alert
2001 Vol. 23, No. 10
Display Method:
2001, 23(10): 937-942.
Abstract:
The localization of multiple current dipoles is a difficult problem for the inverse study of MEG. A method of localization of multiple current dipoles based on the minimum-dipole number solutions is investigated. The revised simulated annealing algor...
The localization of multiple current dipoles is a difficult problem for the inverse study of MEG. A method of localization of multiple current dipoles based on the minimum-dipole number solutions is investigated. The revised simulated annealing algor...
2001, 23(10): 943-948.
Abstract:
A fast algorithm is proposed for tracking low observable small targets in a digital image sequence. Wavelet transform is used for image filterting to improve SNR. Fixed sample size hypothesis testing is applied to generate tentative tracks which avoi...
A fast algorithm is proposed for tracking low observable small targets in a digital image sequence. Wavelet transform is used for image filterting to improve SNR. Fixed sample size hypothesis testing is applied to generate tentative tracks which avoi...
2001, 23(10): 949-953.
Abstract:
A simple and efficient method to design adaptive prefilters based on minimizing the high pass energy of the signal multiwavelet decomposition is presented in this paper. This method can be generalized to 2-dimensional images by processing rows and co...
A simple and efficient method to design adaptive prefilters based on minimizing the high pass energy of the signal multiwavelet decomposition is presented in this paper. This method can be generalized to 2-dimensional images by processing rows and co...
2001, 23(10): 954-961.
Abstract:
A model for the decomposition of polarimetric SAR data is developed in this paper. The model is assumed to consist of four backscatters: Bragg scatter, double-bounce scatter, odd-bounce scatter and volume scatter. This scattering model can successful...
A model for the decomposition of polarimetric SAR data is developed in this paper. The model is assumed to consist of four backscatters: Bragg scatter, double-bounce scatter, odd-bounce scatter and volume scatter. This scattering model can successful...
2001, 23(10): 962-969.
Abstract:
A new method for computing high-frequency RCS of objects with complex configuration, called. Curved Surface Pixel (CSP) method, is presented in this paper. The distinction between CSP method and GRECO method is described. Several different approaches...
A new method for computing high-frequency RCS of objects with complex configuration, called. Curved Surface Pixel (CSP) method, is presented in this paper. The distinction between CSP method and GRECO method is described. Several different approaches...
2001, 23(10): 970-974.
Abstract:
Multisensor data fusion using Derapster-Shafer evidential reasoning is based on information s independence, but it is not true in many practical situations. This paper describes a multisensor data fusion method based on Dempster-Shafer evidential rea...
Multisensor data fusion using Derapster-Shafer evidential reasoning is based on information s independence, but it is not true in many practical situations. This paper describes a multisensor data fusion method based on Dempster-Shafer evidential rea...
2001, 23(10): 975-983.
Abstract:
In this paper, the structure and algorithm of Max-Min fuzzy neural network (MMNN) are studied in detail. In order to get rid of some intrinsic localization of the method and boost up the capability of the MMNN, a series of steps are presented and the...
In this paper, the structure and algorithm of Max-Min fuzzy neural network (MMNN) are studied in detail. In order to get rid of some intrinsic localization of the method and boost up the capability of the MMNN, a series of steps are presented and the...
2001, 23(10): 984-988.
Abstract:
There are two main types of approaches in the research of fault tolerance of Multilayer Perceptrons(MLP): improvement in the learning algorithm and component redundancy after training. A dynamic redundancy BP algorithm is presented. In the training s...
There are two main types of approaches in the research of fault tolerance of Multilayer Perceptrons(MLP): improvement in the learning algorithm and component redundancy after training. A dynamic redundancy BP algorithm is presented. In the training s...
2001, 23(10): 989-993.
Abstract:
An approach is introduced to voice detection that differs from normal approach via energy, correlation and zerocrossing criteria. By measuring the gross shape of the short-term speech spectrum using spectral entropy to detect voice segment, it is sho...
An approach is introduced to voice detection that differs from normal approach via energy, correlation and zerocrossing criteria. By measuring the gross shape of the short-term speech spectrum using spectral entropy to detect voice segment, it is sho...
2001, 23(10): 994-999.
Abstract:
Constellation design has great influence on the performance of satellite positioning system, the constellation should provide multi-coverage and satisfy certain geometry. First, this paper presents coverage property of satellites and DOP factors, bas...
Constellation design has great influence on the performance of satellite positioning system, the constellation should provide multi-coverage and satisfy certain geometry. First, this paper presents coverage property of satellites and DOP factors, bas...
2001, 23(10): 1000-1005.
Abstract:
Ethernet becomes a very popular technology because of its simple, mature, low cost, and good performance. But its capture effect will cause large delay jitter. How to solve this problem has become a new project. In this paper , a new adaptive arbitra...
Ethernet becomes a very popular technology because of its simple, mature, low cost, and good performance. But its capture effect will cause large delay jitter. How to solve this problem has become a new project. In this paper , a new adaptive arbitra...
2001, 23(10): 1006-1013.
Abstract:
In this paper, A barrier function descent direction method for implementing CDMA multi-user detection (BMD) is proposed. As compared to conventional detectors and neural network optimal algorithms, the method derives a new descent direction from the ...
In this paper, A barrier function descent direction method for implementing CDMA multi-user detection (BMD) is proposed. As compared to conventional detectors and neural network optimal algorithms, the method derives a new descent direction from the ...
2001, 23(10): 1014-1021.
Abstract:
In this paper, a heuristic approach for constrained via minimization for VLSI three-layer routing on the basis of segment-crossing graph model is presented. Two types of algorithm-global sense and local sense are combined into the new algorithm. In a...
In this paper, a heuristic approach for constrained via minimization for VLSI three-layer routing on the basis of segment-crossing graph model is presented. Two types of algorithm-global sense and local sense are combined into the new algorithm. In a...
2001, 23(10): 1022-1026.
Abstract:
In this paper, the pilot-channel-assisted QPSK in direct-sequence code-division multiple-access (DS-CDMA) system is investigated. The performance loss due to imperfect channel estimation is calculated. Then the data-to-pilot channel power ratio is op...
In this paper, the pilot-channel-assisted QPSK in direct-sequence code-division multiple-access (DS-CDMA) system is investigated. The performance loss due to imperfect channel estimation is calculated. Then the data-to-pilot channel power ratio is op...
2001, 23(10): 1027-1031.
Abstract:
In this paper,an algorithm of wavelet transform without multiplication is introduced. It can implement 2D separable wavelet transform rapidly. The speed of transform is greatly improved comparing to the classical float algorithm. It is also easy to b...
In this paper,an algorithm of wavelet transform without multiplication is introduced. It can implement 2D separable wavelet transform rapidly. The speed of transform is greatly improved comparing to the classical float algorithm. It is also easy to b...
2001, 23(10): 1032-1035.
Abstract:
Current-mode multifunction biquardratic niters based on current controlled conveyor (CCCII) with two grounded capacitors is proposed. The circuit offers the following advantageous features: realization of different biquadratic filter signals from the...
Current-mode multifunction biquardratic niters based on current controlled conveyor (CCCII) with two grounded capacitors is proposed. The circuit offers the following advantageous features: realization of different biquadratic filter signals from the...
2001, 23(10): 1036-1040.
Abstract:
The classical Kirchhoff formula in the iterative physical optics (IPO) approach, which was brought forward by Obelleiro(1995), has been replaced by a Kirchhoff formula with line integral form. Based on the new method, an improved IPO approach has bee...
The classical Kirchhoff formula in the iterative physical optics (IPO) approach, which was brought forward by Obelleiro(1995), has been replaced by a Kirchhoff formula with line integral form. Based on the new method, an improved IPO approach has bee...
