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- random phase factor 不定位相因子
- Research on Subdividing Method for Random Phase Difference Fringe Signals[J]. 引用该论文 楚兴春;吕海宝;杜列波;周卫红.
- As a result, the random phase changes mentioned above occur much less frequently. 因此,上述的无规相位变化就很少出现。
- The paper presents encrpytion techniques of double random phase based on anamorphic fractional Fourier transform. 提出变形分数傅里叶变换双随机相位编码技术。
- Therefore the zero-correlation phase plates are more effective than random phase plates for speckles smoothing. 因而, 用零相关相位板匀滑散斑是一种更为有效的方法。
- A new optical image encryption method using dissymmetrical fractional Fourier transform and double random phase encoding was presented. 提出了一种利用不对称分数傅里叶变换和双随机相位编码对图像加密的方法。
- Some changes and developments of basic quantum mechanics concepts, such as phase factor,trmsition, corpuscular property and so on, are introduced. 介绍了量子力学中粒子性,全同性,相因子,跃迁等基本概念近年来认识上的发展变化,通过比较研究,给出了一些认识的演变过程
- This paper proposes a progressive approach algorithm based on image cost function to compensate the random phase error in SAR/ISAR imagery. 本文提出逐级逼近算法,基于图像评价函数,对SAR/ISAR中的随机干扰相位进行补偿。
- The transformation of Hermite Gaussian laser beam through random phase plate is discussed in detail by partial coherence theory in this paper. 本文利用部分相干理论研究了高阶厄米-高斯光束通过随机位相片的变换。
- The negative effect produced by ionization of the dielectrics is reduced with the phase factor of alternating electric signals. 利用交变电信号的相位项,降低由电介质电离而产生的负效应。
- The computation of harmonics superposition becomes more complicated when harmonic currents are caused by multi-harmonic sources at random phase angel. 大量的非线性负荷应用在农村配电网中,在农网中出现了多谐波源的现象。
- The nonlinear coupling equation between wave ensembles with three modes is derived by the random phase approximation and the zero dissipation limit. 然后,在零耗散极限和无规相位近似下,求得了不同模态波包的非线性共振耦合方程。
- Given the same random phase, the simulation of the sixth grade and fifth grade track irregularity PSD of U.S. railways shows the level of difference between them obviously. 该方法还可对美国轨道线路五级谱和六级谱进行数值模拟,在随机相位一致的情况下,直观地反映出不同轨道线路谱等级在时域波形上的不平顺差异水平。
- Conventional optical information encryption system can be divided into three kinds: double random phase encryption, iterative phase retrieve algorithm and digital holography. 常见的光学信息加密系统可以分为三类,一类是典型的双随机相位加密;
- On the basis of CGH, it can encode two objects simultaneously by adding negative quadratic phase factor on the conjugate Fourier spectrum of one object and adding positive quadratic phase factor on the Fourier spectrum of the other. 它是在计算全息的基础上 ,通过对两个物的傅里叶谱或共轭谱分别加正的或负的二次相位因子 ,求和后进行编码、制图、缩微而得 ,该滤波器可以分别对两个物实现匹配。
- A quadratic phase factor and DOG wavelet transform function are introduced into traditional matched filter to sharpen correlation peak, which is fabricated by computer generated hologram. 用计算全息制作该匹配滤波器时,引入DOG子波函数,以达到锐化相关峰的目的。
- Experiments of the phase control null and random phase quantization in density weighted phased arrays are described. 叙述了在密度加权相控阵上进行的随机馈相和波束置零实验。
- Soiled dishes were piled at random. 脏碟子胡乱地堆放着。
- Theoretical derivation indicates that time averaged three-order cumulant of signals, which are from random phase harmonic processes, is nonzero and its one-dimension slice is also a harmonic process. 理论推导表明,随机相位谐波过程时间平均三阶累积量为非零值,而且其一维切片仍然是谐波过程。
- It is a high quality data encryption technology that the data are encrypted by double-random phase encoding with uniformly distributed random phase in both the input and Fourier planes. 在研究双随机相位数据加密技术的基础上,结合印刷技术和全息技术的特点,提出了一种基于傅里叶变换印刷全息标识防伪方法。