相位阵列高强聚焦超声相比目前的高强聚焦超声技术,其潜在的目的容积要更大。
Phased Array HIFU has the potential to target larger volumes of tissue than can be currently treated with most existing HIFU technologies.
需经历调谐、阻抗匹配等步骤。阐述了鸟笼式谐振器正交工作原理和开鸟笼正交谐振器的可行性,给出了正交相位阵列方案。
The possibility of constructing open quadrature birdcage as soft coil and quadrature phased array as lumber coil is presented.
相位枪使用一个绿色激光阵列来计算它与目标的距离,以保证一定强度而不致盲。
The PHASR uses a green laser array to calculate its targets distance and ensure its non-blinding intensity.
给出了计算阵列透镜配相、介质透镜外形曲线和平面相控阵天线孔径相位的若干计算公式。
Many formulae used to calculate fixed phase distribution for the array lens, configuration curve of the dielectric lens and aperture phase of a feed phased array are derived.
馈电误差包括由数字移相器的使用引入的相位量化误差、阵列公差和失效单元引起的误差。
Feeding error comprizes phase quantization error produced by digital phase shifter, array tolerance and the error produced by failure element.
还讨论了探测器阵列的相位特性评价。
This paper also discusses the evaluation of the phase character of detector array.
超声相控阵技术通过对超声阵列换能器中各阵元进行相位控制,获得灵活可控的合成波束。
Ultrasonic phased array technique can help to achieve flexible, controllable synthesized ultrasound beam by exciting each element of an ultrasonic array transducer with independent phase delay.
首次建立了微变形镜阵列的光相位调制系统级模型。
Moreover, the optical phase modulation behavior model of micro deformable mirror arrays is established for the first time.
通过优化集成电感的设计,同时采用NMOS管和开关电容阵列作为可变电容,使该设计具有较低的相位噪声和较宽的调谐范围。
Through inductor optimization, the VCO has a low phase noise and a wide tuning range with switched capacitor array and NMOS varactor.
研究了角反射器阵列形成赝相位共轭波的能力,计算了其对泽尼克多项式表示的各阶像差的保真度;
The ability of the retroreflector array to provide psedophase conjugate wave of the input wave is investigated and the calculated results of different Zernike polynomials aberrations are presented.
研究了超声换能器阵列驱动信号的相位调控精度对阵列聚焦声场的影响。
The effect of phased accuracy of the driving signals for array transducers on focused ultrasound field was studied.
本发明提出一种新型的被动综合孔径电光成像阵列相位实时延迟系统。
The present invention provides a new passivity synthetic aperture electro-optical imaging array phase real time delay system.
耦合激光器阵列可以通过激光器之间的倏逝波耦合实现相位锁定,是有望实现光束相干合成的方案之一。
Coupled laser array, which realizes phase locking of elementary lasers with evanescent waves coupling, is a promising scheme to realize coherent beam combination.
超声相控阵技术通过对超声阵列换能器中各阵元进行相位控制,获得灵活可控的合成波束。
Ultrasonic phased array technology USES an array of ultrasonic transducer array element for each phase control, access to flexible and controllable synthesis of beam.
为了深入研究阵列的动力学行为,提出了一种简化的阵列相位连续模型并通过傅立叶级数法求得了解。
To intuitively understand the dynamic behavior of the array, a simplified phase continuum model was proposed and solved via Fourier series.
期望信号和干扰信号相关性越强,阵列滤波性能差异越明显,且相关系数的相位影响着“最佳”干扰信号的空间到达角。
The correlative coefficient between desired signal and interference affects the filtering performance strongly, which changes the direction of optimal interference.
稳定的相位锁定是由于激光器阵列具有能适应光程长度变化的自调节过程。
Steady phase-locking results from a self adjusting process of the laser array which adapts to changes in the optical path lengths.
对适用于干涉型光纤水声传感器阵列的PGC(相位载波)调制—解调单元光纤水声传感器进行了研究,分析得出了光纤水声传感器PGC检测新的带宽要求;
This paper presents the research on the interferometric fiber-optic sensor's PGC scheme which is suitable for the construction of the acoustic sensor array.
研究了一种不等间距排列的球面相控阵列及其相位和幅度调控量化误差对声场的影响。
This paper provided a new spherical phased array with unequal center to center space between arrays and researched the effect of phased and magnitude quantization errors on the field patterns.
要在实验室有限空间内用三元天线阵列模拟目标,就得承受一定的幅度和相位不均匀性。
Generally if a target is to be simulated by a 3-element antenna array in the limited space of a laboratory, inhomogeneity to some extent of the amplitude and the phase will occur.
采用本征激励法,在考虑互耦影响下,数值模拟了幅度误差、相位误差、位置误差和不平行度偏差等对超低副瓣阵列天线方向图性能的影响。
Monte Carlo method and the eigen-driven analysis method are combined to simulate the effects of errors on side-lobe level distribution of the Ultra-low side-lobe arrays.
光纤放大器相位噪声的探测和校正是光纤激光器阵列相干合成的关键技术,热效应是引起光纤放大器相位噪声的主要来源。
It is the key technology to detect and correct the phase noise of the fiber amplifier in coherent combining beam, the main source of phase noise in the fiber amplifier is the thermal effects.
建立了一维三路光纤激光阵列的相干组束实验装置,实现了三束光纤激光的相位锁定,观测到稳定的干涉图样。
The experimental setup of coherent beam combination of three fiber lasers in one dimension is built, and phase-locking of three fiber lasers is achieved and stable interference patterns are observed.
建立了一维三路光纤激光阵列的相干组束实验装置,实现了三束光纤激光的相位锁定,观测到稳定的干涉图样。
The experimental setup of coherent beam combination of three fiber lasers in one dimension is built, and phase-locking of three fiber lasers is achieved and stable interference patterns are observed.
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