In this paper, the scattering principium of airborne phased array antenna is discussed, and the antenna mode RCS of the two-dimensional array is estimated. Based on theoretical calculations, broadband matching, inclin...
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In this paper, the scattering principium of airborne phased array antenna is discussed, and the antenna mode RCS of the two-dimensional array is estimated. Based on theoretical calculations, broadband matching, inclin...
详细信息
ISBN:
(纸本)9781424482658
In this paper, the scattering principium of airborne phased array antenna is discussed, and the antenna mode RCS of the two-dimensional array is estimated. Based on theoretical calculations, broadband matching, incline, manufacturing tolerances and other RCS reduction measures are researched. The results show that these stealth approaches have an obviously effect on the RCS reduction.
This paper proposes a novel genetic clustering algorithm, called a real-valued quantum genetic niching clustering algorithm (RQGN), which is based on the concept and principles of quantum computing, such as the qubits...
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This paper proposes a novel genetic clustering algorithm, called a real-valued quantum genetic niching clustering algorithm (RQGN), which is based on the concept and principles of quantum computing, such as the qubits...
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This paper proposes a novel genetic clustering algorithm, called a real-valued quantum genetic niching clustering algorithm (RQGN), which is based on the concept and principles of quantum computing, such as the qubits and superposition of states. Our algorithm can automatically clustering a data set into clusters without the need to know the number of clusters in advance. A dynamic identification of the niches is performed at each generation to automatically evolve the optimal number of clusters as well as the cluster centers of the data set. After getting the niches of the population, a Q-gate with adaptive selection of the angle for every niches is introduced as a variation operator to drive individuals toward better solutions. The experimental results show that RQGN algorithm has high performance, effectiveness and flexibility.
作者：
郭晓金殷宗敏宋宁The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems
Shanghai Jiaotong University Shanghai 200030 The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems
Shanghai Jiaotong University Shanghai 200030 method of measuring vibration by using fiber Bragg grating (FBG) and demodulating the spectrum by blazed grating is introduced. The sensor system is made of a simple supported beam with a FBG adhered to its upper surface. A blazed grating is used to demodulate the changing spectrum that is got from the sensor system and a line charge-coupled device (CCD) is used to accept the diffraction spectrum. Through analyzing the number of the CCD's pixels we can get the amplitude of vibration and the change of the temperature. The experimental results show that the vibration amplitude of the exciter matches the detected signal under the stable frequency. The temperature shift and vibration signal are also successfully separated.
A method of measuring vibration by using fiber Bragg grating (FBG) and demodulating the spectrum by blazed grating is introduced. The sensorsystem is made of a simple supported beam with a FBG adhered to its upper su...
详细信息
A method of measuring vibration by using fiber Bragg grating (FBG) and demodulating the spectrum by blazed grating is introduced. The sensorsystem is made of a simple supported beam with a FBG adhered to its upper surface. A blazed grating is used to demodulate the changing spectrum that is got from the sensorsystem, and a line charge-coupled device (CCD) is used to accept the diffraction spectrum. Through analyzing the number of the CCD's pixels, we can get the amplitude of vibration and the change of the temperature. The experimental results show that the vibration amplitude of the exciter matches the detected signal under the stable frequency. The temperature shift and vibration signal are also successfully separated.
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