A backscatter model was developed for measuring wind field with far-field approximation method.
提出了一种基于远场近似法建立的大气风场测量散射模型。
Therefore, measurement of mode field diameter of single mode fibers by far-field mask is realized.
实现了用远场掩模法对单模光纤模场直径的测量。
This method is valid, no matter the objects are located in the far-field region or near-field region.
理论分析表明，无论目标位于远场区还是近场区，本方法都是适用的。
Finally, the space distribution characteristic of scattered far-field pressure was calculated and plotted numerically.
最后对其散射远场声压的空间分布特性进行了数值计算。
The Chain Relation is meaningful in the research on target character, the far-field and near-field scattering measurement.
链条关系式在目标特性研究、远场和近场散射测量等方面有重要意义。
The identification of mode compositions of gyrotron output power is discussed by using far-field radiation pattern analysis.
讨论从测量远场辐射花样入手来鉴别回旋管的输出成份问题。
This study focused on analysis of pressure fluctuation on the body surface, prediction of exterior far-field noise and interior noise and the road tests.
本文的研究重点包括车身表面脉动压力的求解和分析、车外远场噪声和车内噪声的预估以及实车道路试验研究。
The result shows that model is economic and credible in the discretization of far-field of infinite domain, especially to researching for dynamic problems.
结果表明，用这一模型来离散无限域的远场，特别是研究动力问题，具有较好的经济性和可靠性。
The heat character and far-field facula of liquid laser with single gain host and double gain host at the same gain length were simulated, and then compared.
采用数值计算方法模拟了同样增益长度的单、双增益模块系统的热特性和输出激光的远场光斑分布，并进行了对比分析。
The thermal effect of high-energy laser produced within the beam controller and its influence on laser far-field spot are analyzed with numerical calculation method.
采用数值计算方法分析了高能激光在光束控制器内部传输所产生的热效应及其对激光远场光斑的影响。
It is shown that the far-field behavior of diffracted partially polarized Gaussian Schell-model beams depends on the truncation parameter, spatial coherence parameters and diffraction Angle.
研究结果表明，光阑衍射部分偏振高斯·谢尔模型光束的远场特性与光阑截断参量、光的空间相干性和衍射角有关。
The middle-field ISAR imaging by mending curved phase front is as same as the far-field imaging, but can reduce the requirement of measurement distance greatly, with great engineering meanings.
在中场区通过对相位弯曲补偿进行微波成像与远场成像效果相当，且能大大降低对测试距离的要求，所以具有很强的工程应用价值。
Sceptics and advocates alike do concur on one issue, however: that the most impressive evidence so far has come from the so-called "ganzfeld" experiments, a German term that means "whole field".
然而，怀疑者和支持者在一个问题上达成了一致：迄今为止，最令人印象深刻的证据来自所谓的“甘兹菲尔德”实验，这是一个德语术语，意思是“整个领域”。
They made a chair with their hands and carried Dorothy through the flowers to the grass far enough from the poppy field.
它们用手做了一把椅子，带着桃乐茜穿过花丛，来到远离罂粟田的草地上。
Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
衍射理论的另一个重要应用就是研究准直光束的远场发散角。
This method can obtain the estimation of the steering vector directly and is adaptive to both far field and near field models.
该方法可直接获得导向矢量的闭式估计，并且该方法可适用于阵列远场、近场接收信号模型。
The radiation pattern in the near and far field of each frequency component of the spectrum of current pulse on a transmission line.
传输线线上脉波电流之频谱与分布及其各频率成份之辐射远近场型之差异。
Verification of differences of characteristics of electromagnetic field image and radiation pattern in the near and far field are demonstrated.
验证电磁场影像及场型特性在近场与远场中之差异。
The computing method using scaling model can be applied to both far field and near field.
缩比模型计算既适用于近场，也适用于远场。
In the case of far field sources, based on the subspace direction-finding technique, a new method for active calibration of array shape is presented.
文中基于子空间类测向方法，在远场情况下，提出了一种新的估计阵元位置误差的有源校正算法。
When considered the far field test, the sample plane cannot do infinitely great, the paper has analyzed the truncation error, and proposed the error correction method.
考虑到远场测试时，取样平面不可能做的无限大，在对误差进行分析的基础上，给出了误差修正方法。
The far field diffractive pattern calculating formula for diffraction antenna with continuous phase structure is derived by current distribution method in antenna theory for the first time.
应用天线理论中的电流分布法，首次推导了具有连续位相结构的反射式毫米波衍射天线的远场衍射图计算公式。
In this paper, when assuming a Gaussian near field distribution on the cross section of single-mode fiber, it has been derived theoretically that the far field is also a Gaussian distribution.
本文在假定单模光纤横端面上的近场为高斯分布的前提下，从理论上导出了其远场分布也是高斯分布。
Fracture diagnosing technique is mainly classified into: direct far field fracture diagnosing, direct near well bore fracture diagnosing and indirect fracture diagnosing.
裂缝诊断的方法主要可分为：直接的远场裂缝诊断技术、直接的近井筒诊断技术、间接诊断方法。
Based on the transmitted field the characteristic of interference and sensing between two modes is investigated and point out the disciplinarian of far field two-lobe radiation patterns.
建立在光纤中传输模场的基础上，研究了两模间干涉特性和传感特性，指出了远场两瓣光斑的动态变化规律。
A concept of Ultra wideband radar signal is proposed, and then a time domain imaging algorithm is presented to reconstruct far field images of conducting objects.
给出超宽带雷达信号的概念，提出由超宽带雷达信号散射远场重建理想导体目标简捷的时域成像公式和实现算法。
Results of far field displacement around a circular cavity are given.
文中给出了圆孔周围的远场位移的数值结果。
Discussed the stress condition of periphery crack's local tension stress field created by compressing stress in far field.
讨论了远场压应力在裂纹周边附近产生的局部拉应力场的应力情况。
Discussed the stress condition of periphery crack's local tension stress field created by compressing stress in far field.
讨论了远场压应力在裂纹周边附近产生的局部拉应力场的应力情况。
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