相位问题
- 网络phase problem
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回顾了经典物理和量子力学中的相位问题,着重讨论了量子几何Berry相位及在量子力学中如何进行量子相位教学的问题。
The phase problem of classical physics and quantum mechanics are reviewed , then geometrical Berry 's phase and how to perform its teaching in quantum physics are discussed .
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电子晶体学中的相位问题及快速模拟计算研究
The Study of Phase Problem in the Electron Crystallography and Fast Simulation Calculation
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但上述方法只适用于Fourier相位问题。
All the above mentioned approaches can only treat the Fourier phase problems .
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然后对UWB脉冲信号失真问题和脉冲信号的相位问题进行深入分析。
Then the distortion and the phase distribution of an UWB signal are investigated in details .
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有关A-B效应和相位问题及量子绝热定理成立条件&三答李华钟教授的评述
On the quantum phase factor and quantum adiabatic theorem & Reply to the comment by H.Z.Li
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电源切换电调双频振荡电路的相位问题
Phase problems of tune bi-frequency oscillating circuit by power supply switch
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液压数字自适应控制系统的非最小相位问题及其对策
On the Problems of Non-minimum Phase in Hydraulic Digital Adaptive Control System
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直到现在,在X-射线结构分析中尚无解决相位问题的普遍实用的方法。
There is no general solution even in the X-ray structure analysis .
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相干态的相位问题对我国重复建设的思考
PHASE OF COHERENT STATE On Repeating Construction in China
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波形内插语音编码算法中相位问题的研究
Research on Phase Information in Waveform Interpolation Speech Coding
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双模相位问题
The problem of the two mode phase operators
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相干态的相位问题
Phase of coherent state
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在地震勘探资料处理中,相位问题是影响有效地震反射信号实现同相叠加的重要因素之一。
The phase problem is one of the important factors that effect seismic reflective signal stack in same phase .
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但电压模型中的纯积分环节存在直流偏置和初始相位问题。
But the pure integrator of the voltage model has some disadvantages like DC bias and initial phase problems .
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针对声悬浮场的弱小相位问题,完成了可用于相位倍增的实验光路的设计。
Phase multiplied experiment setup is designed , which can solve the problem of feeblish phase in acoustic levitation field .
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为了解决以导弹法向过载为输出的非最小相位问题,采用了输出重定义技术。
In order to solve the non-minimum phase problem of the output of missile normal overload , an output-redefinition technique was adopted .
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基于混合误差模型,避免了系统因离散化而引起的非最小相位问题及扰动影响。
Based on hybrid error model , the non-minimum phase problem caused by discretization is avoided , and the disturbance effect is eliminated .
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电子晶体学的发展历史比X-射线晶体学的历史要短很多,因此相位问题还远远没有解决。
There is a long way to go to solve phase problem in electron crystallography because of its short history compared to that of X-ray crystallography .
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由单强度测量来恢复相位问题,也有过讨论,可以利用解析函数特有性质或应用取样定理来实现相位恢复。
The phase retrieval problem from single intensity measurement was also discussed in terms of the properties of analytical function or under consideration of sampling theorem .
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边合成边测序的高通量基因测序技术存在一个相位问题,即碱基合成的先后顺序会出现“超前”和“延迟”。
The high-throughput genome sequencing has a phase problem , i.e. " exceeding " or " delaying ", which appears in the order of bases synthesizing .
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应用HMRAC,避免了系统因数字化而引起的非最小相位问题及非线性影响,有利于进一步提高系统的鲁棒性。
Using the hybrid model reference adaptive control , the problem of non-minimum and the influence of nonlinear were avoided , which were caused by digitizing the system .
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分析了基于线性调频信号多频测距时出现的二次相位问题,提出了利用测速系统速度信息进行相位消除的方法。
This paper analyses the problem of the quadratic phase for multiple frequency ranging based on chirp signal , and the method of the phase elimination is proposed .
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盲均衡器设计的另二个难点是如何求解非最小相位问题。基于码间干扰的数学模型,建立了盲均衡问题与MA模型参数求解问题间的关系。
Another difficulty in designing blind equalizer is how to solve the problem of non-minimum phase since most of existing methods could only solve the minimum phase parameters of MA model .
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相位恢复问题研究,对于天文、X射线相衬成像、衍射光学、波阵面重构和全息术等领域有重要意义。
The research of phase retrieval algorithm is important for many fields , such as astronomy , X ray phase contrast imaging , diffractive optic , holography , wave-front reconstruction and so on .
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针对低信噪比下QAM信号的载波相位跟踪问题,提出一种基于信号合成的联合载波相位跟踪算法。
A joint carrier-phase-tracking algorithm based on signal combining is proposed for carrier phase tracking of quadrature amplitude modulation ( QAM ) signals .
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在论述光声光谱产生理论的基础上,定性分析并通过计算进一步定量研究了CO2和H2O吸收引起的相位延迟问题。
This paper makes a qualitative analysis and a further quantitative calculation on the phase delay resulting from the absorption of CO2 and H2O . The principle of simultaneous measurement of multi-gas component is discussed in detail .
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讨论了在GaSe晶体和GaAs晶体中,利用CO2激光差频产生THz波的相位匹配问题。
Phase-matching problem in the generation of terahertz radiation via difference frequency mixing of CO2 laser lines in GaSe and GaAs crystals has been discussed in detail .
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介绍DDS原理,用VHDL语言描述,以FPGA作为硬件载体直接实现8-PSK调制,从而解决了传统方法实现8-PSK调制的相位模糊问题,提高了调制的相位精度。
This paper introduces DDS principle and describes VHDL based on FPGA method to realize directly 8-PSK modulator ; The method solves the phase fuzzy problem of 8-PSK modulation of the traditional method and improves the phase modulation precision .
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本文研究了FTP的相关问题:(1)提出双频光栅FTP,并深入讨论了为消除频谱混叠,两个载频之间所必须满足的频率选择关系以及相位展开问题;
In this paper , we have researched the FTP , first we propose an improved FTP based on two-frequency grating projecting , which are involved in the problems of the phase unwrapping and the frequency selection to satisfy the two carrier frequencies no frequency aliasing .
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为了消除四相相移键控(QPSK)调制方式中相干解调时载波恢复存在的相位模糊问题,本文推导了在收发两端所分别插入的自然码差分编译码方程。
To do away with the fussiness of phase when carrier wave recovers in the coherent demodulation of quadrature phase shift keying ( QPSK ), the equations are deduced as to how to natural differential coder in the sender and decoder in the receiver .