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1995 Vol. 17, No. 2
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1995, 17(2): 113-118.
Abstract:
The foundamental reflection and transmission of a plane wave from multilayered nonlinear slabs are studied by using the Volterra functional series theory. The first order approximations of reflectivity and transmissivity are derived. The numerical ca...
The foundamental reflection and transmission of a plane wave from multilayered nonlinear slabs are studied by using the Volterra functional series theory. The first order approximations of reflectivity and transmissivity are derived. The numerical ca...
1995, 17(2): 119-124.
Abstract:
A low sidelobe aperture designing method of multi-step amplitude quantization with pedestal is proposed, and general analysis and formulas are described. The computation results compared with author s(1993) previous method Multi-Step Amplitude Quanti...
A low sidelobe aperture designing method of multi-step amplitude quantization with pedestal is proposed, and general analysis and formulas are described. The computation results compared with author s(1993) previous method Multi-Step Amplitude Quanti...
1995, 17(2): 125-133.
Abstract:
Powerful HF waves modulated by ELF signals are employed to heat the lower ionosphere and generate ELF radiations that might be applicable to communication to submarines. Numerical results show that, if the frequency and effective radiation power(ERP)...
Powerful HF waves modulated by ELF signals are employed to heat the lower ionosphere and generate ELF radiations that might be applicable to communication to submarines. Numerical results show that, if the frequency and effective radiation power(ERP)...
1995, 17(2): 134-139.
Abstract:
This paper proposes a new variable-bit-rate layered coding algorithm based on zubband coding. It makes full use of the advantage of variable-bit-rate transmission of ATM networks and has the ability to compensate picture degradation caused by cell lo...
This paper proposes a new variable-bit-rate layered coding algorithm based on zubband coding. It makes full use of the advantage of variable-bit-rate transmission of ATM networks and has the ability to compensate picture degradation caused by cell lo...
1995, 17(2): 140-144.
Abstract:
Using m-sequence over the finite field GF(2m) of degree L to controll m-sequence over GF(2m) of degree L, a class of periodic sequences with large linear complexity is constructed. The lower bounds of the linear complexity of the sequences are L((L+1...
Using m-sequence over the finite field GF(2m) of degree L to controll m-sequence over GF(2m) of degree L, a class of periodic sequences with large linear complexity is constructed. The lower bounds of the linear complexity of the sequences are L((L+1...
1995, 17(2): 145-153.
Abstract:
The feature points are often extracted as matching feature. And a constraint minimum energy function can be got by using the method of disparity estimation under the condition of certain matching criterion. The results of simulated experiments show t...
The feature points are often extracted as matching feature. And a constraint minimum energy function can be got by using the method of disparity estimation under the condition of certain matching criterion. The results of simulated experiments show t...
1995, 17(2): 154-160.
Abstract:
The extinction ratio test of analogue ranging is adopted directly to check the sensitivity of pulsed laser range finders, then the influence of weather and the limitation of terrain in long-distance ranging can be elinminated effectively. By analyzin...
The extinction ratio test of analogue ranging is adopted directly to check the sensitivity of pulsed laser range finders, then the influence of weather and the limitation of terrain in long-distance ranging can be elinminated effectively. By analyzin...
1995, 17(2): 161-169.
Abstract:
A subnetwork is able to be solved, if its terminal currents have been determined. In this paper, the concepts of island and bridge are presented, the CCVS model of n-terminal subnetwork is constructed, the island equations are deduced and then the cu...
A subnetwork is able to be solved, if its terminal currents have been determined. In this paper, the concepts of island and bridge are presented, the CCVS model of n-terminal subnetwork is constructed, the island equations are deduced and then the cu...
1995, 17(2): 170-174.
Abstract:
Three-unit array was constructed with SnO2 gas sensors. Two classi-fers, the k-nearest neighbour and the weighted k-nearest neighbour, were used. It is shown that the recognition probability of the former is 40 to ethanol and 90 to gasoline and that ...
Three-unit array was constructed with SnO2 gas sensors. Two classi-fers, the k-nearest neighbour and the weighted k-nearest neighbour, were used. It is shown that the recognition probability of the former is 40 to ethanol and 90 to gasoline and that ...
1995, 17(2): 182-186.
Abstract:
By using the binary code instead of the ternary code, a increment in number of information bit is obtained. Then by adapting the one-element-operator, the number of information bit increases further to maximum.
By using the binary code instead of the ternary code, a increment in number of information bit is obtained. Then by adapting the one-element-operator, the number of information bit increases further to maximum.
1995, 17(2): 187-190.
Abstract:
This paper proposes a simplification method for realization of current-mode CMOS multivalued circuits. The key of this method is to find out a coverage on the K-map for a given multivalued function, which fits to the realization of current-mode CMOS ...
This paper proposes a simplification method for realization of current-mode CMOS multivalued circuits. The key of this method is to find out a coverage on the K-map for a given multivalued function, which fits to the realization of current-mode CMOS ...
1995, 17(2): 191-196.
Abstract:
The construction and specifications of a SAW storage correlator are described. A time domain processing mode spread spectrum system is presented. An analysis of interference rejection for this system is provided. The calculating formula for the proba...
The construction and specifications of a SAW storage correlator are described. A time domain processing mode spread spectrum system is presented. An analysis of interference rejection for this system is provided. The calculating formula for the proba...
1995, 17(2): 197-200.
Abstract:
A coaxial reflection-mode electrooptic sampling system is presented. This system has a temporal resolution less than 20 ps and a spatial resolution less than 3m. The internal microwave signals in GaAs coplanar waveguides have been probed by the syste...
A coaxial reflection-mode electrooptic sampling system is presented. This system has a temporal resolution less than 20 ps and a spatial resolution less than 3m. The internal microwave signals in GaAs coplanar waveguides have been probed by the syste...
1995, 17(2): 201-205.
Abstract:
The eignvalue equation, the attenuation constant a and the field distribution function of the surface wave(SW) in a conductor-backed lossy dielectric layer are derived. The relationship between the a and the parameters of the dielectric material is d...
The eignvalue equation, the attenuation constant a and the field distribution function of the surface wave(SW) in a conductor-backed lossy dielectric layer are derived. The relationship between the a and the parameters of the dielectric material is d...
1995, 17(2): 206-209.
Abstract:
The performance of the high resolution direction finding technique based on the spatial spectrum estimation is severely suffered with channel mismatching and mutual coupling between elements in arrays. In this paper, the mechanism of performance degr...
The performance of the high resolution direction finding technique based on the spatial spectrum estimation is severely suffered with channel mismatching and mutual coupling between elements in arrays. In this paper, the mechanism of performance degr...
1995, 17(2): 210-214.
Abstract:
The therapy principle and design of microwave prostate hyperthermia are described. This apparatus uses 915MHz microwave treatment for the prostate. The solid state microwave source and surface cooling system of special design only heats the prostate....
The therapy principle and design of microwave prostate hyperthermia are described. This apparatus uses 915MHz microwave treatment for the prostate. The solid state microwave source and surface cooling system of special design only heats the prostate....
1995, 17(2): 215-219.
Abstract:
This paper reports the particle size effect on the resistance and TCR of Ta-doped Ru-base thick film resistor, which occurs when the particle sizes of two phases reach critical values (conductive phase 25nm, glass phase 50nm). And it can be explained...
This paper reports the particle size effect on the resistance and TCR of Ta-doped Ru-base thick film resistor, which occurs when the particle sizes of two phases reach critical values (conductive phase 25nm, glass phase 50nm). And it can be explained...
1995, 17(2): 220-224.
Abstract:
An airborne SAR real-time digital imaging processor is presented, and its real-time digital imaging principle and main technical parameters are analyzed briefly. The system configuration and logical structure are described in detail. Finally the main...
An airborne SAR real-time digital imaging processor is presented, and its real-time digital imaging principle and main technical parameters are analyzed briefly. The system configuration and logical structure are described in detail. Finally the main...
1995, 17(2): 175-181.
Abstract:
Over past ten years, the Ku-band broadcasting satellites had been sent into orbit by some countries and regions such as Japan, Western Europe and Northern America, etc. Also, a series of business for Direct Broadcasting Satellite (DBS) had been carri...
Over past ten years, the Ku-band broadcasting satellites had been sent into orbit by some countries and regions such as Japan, Western Europe and Northern America, etc. Also, a series of business for Direct Broadcasting Satellite (DBS) had been carri...
