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1994 Vol. 16, No. 5
Display Method:
1994, 16(5): 449-455.
Abstract:
A three-dimensional space interpolation method of grey-depth image sequence is presented. The way breaks away from the limit of original practical photographing route. The pictures can cruise at will in space. By using space sparse sampling, the memo...
A three-dimensional space interpolation method of grey-depth image sequence is presented. The way breaks away from the limit of original practical photographing route. The pictures can cruise at will in space. By using space sparse sampling, the memo...
1994, 16(5): 456-462.
Abstract:
This paper discussed the possibility and key problem of constructing the neural network time series model, and three time series neural network forecasting methods has been proposed. That is, the neural network nonlinear time series model, the neural...
This paper discussed the possibility and key problem of constructing the neural network time series model, and three time series neural network forecasting methods has been proposed. That is, the neural network nonlinear time series model, the neural...
1994, 16(5): 463-468.
Abstract:
This paper proves that a good linear block error-correcting code implements a good linear local-random sequence generator. Therefore the close relation between error-correcting coding theory and modern cryptography is discovered once again.
This paper proves that a good linear block error-correcting code implements a good linear local-random sequence generator. Therefore the close relation between error-correcting coding theory and modern cryptography is discovered once again.
1994, 16(5): 469-475.
Abstract:
A statistical noise model and a mathematical model for real speckle pattern are presented, and then, in view of the models, a new adaptive suboptimal image filtering approach is proposed. The proposed approach, with the local direction features of sp...
A statistical noise model and a mathematical model for real speckle pattern are presented, and then, in view of the models, a new adaptive suboptimal image filtering approach is proposed. The proposed approach, with the local direction features of sp...
1994, 16(5): 476-480.
Abstract:
A new approach with high resolution 2-D spectrum estimation is presented. Based on the array signal processing and the eigenstructure decomposition method, the signal subspace and the noise subspace are achieved by reconstructing and decomposing the ...
A new approach with high resolution 2-D spectrum estimation is presented. Based on the array signal processing and the eigenstructure decomposition method, the signal subspace and the noise subspace are achieved by reconstructing and decomposing the ...
1994, 16(5): 481-489.
Abstract:
The principle and performance cf Synthetic Impulse and Antenna Ra-der (SIAR) are analyzed with the concept of time-space 3-D matched filtering. The discussion here centres on the characteristics of synthetic impulse and antenna in the case of three d...
The principle and performance cf Synthetic Impulse and Antenna Ra-der (SIAR) are analyzed with the concept of time-space 3-D matched filtering. The discussion here centres on the characteristics of synthetic impulse and antenna in the case of three d...
1994, 16(5): 490-496.
Abstract:
A new approach is proposed which can satisfy the range ambiguity requirement while keep the antenna width not to be enlarged and get the high quality image also. Here the chirp slope of the transmitted linear frequency modulated pulses is reversed al...
A new approach is proposed which can satisfy the range ambiguity requirement while keep the antenna width not to be enlarged and get the high quality image also. Here the chirp slope of the transmitted linear frequency modulated pulses is reversed al...
1994, 16(5): 497-504.
Abstract:
An integral equation is derived from the electric field integral equation (EFIE) for plane wave illumination onto the metallic circular disc-ring structures by using Fourier transformation and separating the induced charge s contribution from the EFI...
An integral equation is derived from the electric field integral equation (EFIE) for plane wave illumination onto the metallic circular disc-ring structures by using Fourier transformation and separating the induced charge s contribution from the EFI...
1994, 16(5): 505-512.
Abstract:
The building blocks of current-mode CC1I are proposed. The leapfrog-type CCII filter structures and their design based on the building blocks are discussed. The filters yield low sensitivities, and they are suitable for fully integrated continuous-ti...
The building blocks of current-mode CC1I are proposed. The leapfrog-type CCII filter structures and their design based on the building blocks are discussed. The filters yield low sensitivities, and they are suitable for fully integrated continuous-ti...
1994, 16(5): 513-517.
Abstract:
On the basis of psychological acoustic theories and experiments, this paper proposes an acoustic model which is based on acoustic perceptual feature. Compared with the physiological acoustics based acoustic model, this model car. more true represent ...
On the basis of psychological acoustic theories and experiments, this paper proposes an acoustic model which is based on acoustic perceptual feature. Compared with the physiological acoustics based acoustic model, this model car. more true represent ...
1994, 16(5): 518-521.
Abstract:
The picosecond photoconductive switches are developed and used to detect the pulse laser waveform. By using the photoconductive switches, a novel lab model of an ultrawide band (UWB) radar is also developed. The experimental results are given to show...
The picosecond photoconductive switches are developed and used to detect the pulse laser waveform. By using the photoconductive switches, a novel lab model of an ultrawide band (UWB) radar is also developed. The experimental results are given to show...
1994, 16(5): 523-528.
Abstract:
On the basis of the experimental element pattern and GTD, an efficient numerical method for analyzing 3-D radiation field of antennas on the truncated cone-cylinder is presented. These formulas are also applicable to the truncated cylinder and cone. ...
On the basis of the experimental element pattern and GTD, an efficient numerical method for analyzing 3-D radiation field of antennas on the truncated cone-cylinder is presented. These formulas are also applicable to the truncated cylinder and cone. ...
1994, 16(5): 529-533.
Abstract:
One dimensional Fresnel zone phase corrected plate (1-DFP) can be made by a 1/P wavelength phase correcting along one dimension upon the plate. When it is used as a reflector, it gives an alternative to parabolic cylinder reflector in application on ...
One dimensional Fresnel zone phase corrected plate (1-DFP) can be made by a 1/P wavelength phase correcting along one dimension upon the plate. When it is used as a reflector, it gives an alternative to parabolic cylinder reflector in application on ...
1994, 16(5): 534-540.
Abstract:
The development of a compact high repetition rate electron beam accelerator is reported. The specifications of the device are output electron energy 120--150keV, beam current 5--50A, pulse duration 1 s, beam cross-section 550cm2 and repetition freque...
The development of a compact high repetition rate electron beam accelerator is reported. The specifications of the device are output electron energy 120--150keV, beam current 5--50A, pulse duration 1 s, beam cross-section 550cm2 and repetition freque...
1994, 16(5): 541-544.
Abstract:
The migration of fluorine atoms in poly-silicon and SiO2 of BF+2 implanted Si-gate before and after annealing has been analyzed using SIMS. The results show that a part of fluorine atoms of BF+2 implanted Si-gate with an energy of 80keV and doses of ...
The migration of fluorine atoms in poly-silicon and SiO2 of BF+2 implanted Si-gate before and after annealing has been analyzed using SIMS. The results show that a part of fluorine atoms of BF+2 implanted Si-gate with an energy of 80keV and doses of ...
1994, 16(5): 545-549.
Abstract:
The low temperature frequency characteristics of polysilicon emitter bipolar transistors are investigated, considered the carrier freezingout effect and trapping effect of shallow energy impurities in semiconductors. It shows that the base sheet resi...
The low temperature frequency characteristics of polysilicon emitter bipolar transistors are investigated, considered the carrier freezingout effect and trapping effect of shallow energy impurities in semiconductors. It shows that the base sheet resi...
1994, 16(5): 550-555.
Abstract:
This paper introduces the designing thought of modular constant-current circuits and new-made current regulators with wide current range. Some data about the new device read as follows: current range is 0.1A-8A, current temperature coefficient is 10-...
This paper introduces the designing thought of modular constant-current circuits and new-made current regulators with wide current range. Some data about the new device read as follows: current range is 0.1A-8A, current temperature coefficient is 10-...
1994, 16(5): 556-560.
Abstract:
Basic theory of designing SCPs with less capactor spread is studied. Two topologial methods for reducing capacitor spread of SCFs are presented. Realizations of those methods are also proposed.
Basic theory of designing SCPs with less capactor spread is studied. Two topologial methods for reducing capacitor spread of SCFs are presented. Realizations of those methods are also proposed.
