The waveform generated using digital systems is of strict coherence , repetitiveness , high stability and programmability , which can also easily realize the waveform parameter agility and generate arbitray waveforms in order to meet the urgent needs for anti - interference and strong viabilities of radars under modern ew environment 数字方法生成的波形具有严格的相干性、可重复性、高度的稳定性和可编程的优点,能够方便地实现波形参数捷变以及产生任意复杂波形,满足了现代电子战环境中对雷达抗干扰和强生存能力的迫切要求。
The basic principles and methods of sar interferometry were studied and some problems in it were analyzed , such as signals processing , height measurement errors , coherence of signals , etc . the basic theories of the polarimetric sar measurement were studied and the basic models of polarimetric sar measurement were analyzed in detail 本文研究了干涉sar测量的原理和技术，对其信号处理流程、测高误差、信号相干性等问题进行了分析。较深入地研究了极化sar测量的基本理论，分析了极化sar测量模型和误差。
The coherence analysis of the sound field using prssure and particle velocity combined processing was discussed . a new kind of combined sensor was used to gather the information of the sound field . the main idea of this paper is to seperate ambient noise field ， and the characteristics of it can be further studied . the coherence of a point source sound field was also analyzed to verify the validity of the approach 声场声压与振速的相干性是声压、振速信息联合处理的重要物理基础之一，本文对其进行了初步的分析.在新型组合传感器湖试的基础上，把环境噪声场分解为不相干的各向同性分量和相干的各向异性分量，初步分析环境噪声场的构成；同时对点源声场的相干性也进行了验证性的分析
Finally , we present the approximate distribution of trapping potential of the guided cold atoms in the atomic funnel based on the vccc or the uccc . by using a similar method in the analysis of optical coherence , we study the coherent evolution of the ground - state wave function of ultra - cold atoms in atomic funnel , and obtain some normalized correlation functions of the first , second , third and high order 最后，给出了原子在基于v -型和u -型载流导体构建的原子漏斗中所感受到的囚禁势的摘要采用漂流导体的原子易引及其原于光学器件近似分分，并采用类似于光场相干性的分析方法，计算了超冷原子物质波的基进波函数及其在原子漏斗中传播时相干性的演化，得到了物质波的一阶、二阶、三阶和高阶相于度。
In order to improve the existing pr adaptive optical heterodyne detection system ( praohds ) , a new praohds is proposed based on sppc and mppc coexistence . the experimental study of the system is completed by equal amplitude ar + laser beams , poorly coherent equal amplitude solid - state laser beams and high speed amplitude - modulated solid - state laser beams through distorting media . experimental results indicate that the new system is applicable 为了改进现有的光折变自适应光外差探测系统( praohds ) ，本文利用sppc和mppc同时共存的特性，提出了一种新型的praohds ，并利用ar ~ +等幅激光、相干性较差的固体等幅激光以及固体高速振幅调制激光对新系统进行了畸变光束的自适应光外差探测实验研究，结果证明了新系统在实际应用中的可行性。
The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance , it has longe - lived , low threshold current density , high efficiency , high luminosity and excellent monochromatic , coherence , directionality , etc . the high - power semiconductor laser is widely applied to the fields , such as military , industrial machining , communication , information processing , medical treatment , etc . the material ' s epitaxy is the foundation of the whole laser ' s fabricating , and it has important influence on the optics and electricity performance about the laser 大功率半导体量子阱激光器是一种性能优越的发光器件，具有寿命长、阈值电流密度低、效率高、亮度高以及良好的单色性、相干性、方向性等特点，广泛应用于军事、工业加工、通信及信息处理、医疗保健等领域。材料的外延生长是整个激光器器件制作的基础，对器件的光学和电学性能有着重要的影响，生长不出优质的材料体系，获得高性能的器件就无从谈起，因此，材料的外延生长便成为了整个半导体激光器制作过程之中的重中之重。
Several new physics experiments in 1998 were performed and analyzed to showthe subtlety of quantum theory , including the “ wave - particle duality ” and the nonseparability of two - particle entangled s tate . here it is shown that the measurement is bound to change the object by dest roying the original quantum coherence between the object and its environment . so the “ physical reality ” should be defined at two levels , the “ thing in itself ” and the “ thing for us ” . the wave function in quantum mechanics is just playing the role for connecting the two levels of matter via the fictitious measurement 在1998年完成和分析的几个新的物理实验显示了量子理论的微妙性，包括“波粒二重性”以及二粒子缠结态的不可分性.本文的分析表明：测量在破坏原来存在于客体及其环境间的量子相干性时必然要改变客体.因而“物理实在”应在两个层次上定义： “自在之物”与“为我之物” .量子力学中的波函数则正起了通过“虚拟的测量”将这两个层次的物质联系起来的作用
Abstract : several new physics experiments in 1998 were performed and analyzed to showthe subtlety of quantum theory , including the “ wave - particle duality ” and the nonseparability of two - particle entangled s tate . here it is shown that the measurement is bound to change the object by dest roying the original quantum coherence between the object and its environment . so the “ physical reality ” should be defined at two levels , the “ thing in itself ” and the “ thing for us ” . the wave function in quantum mechanics is just playing the role for connecting the two levels of matter via the fictitious measurement 文摘:在1998年完成和分析的几个新的物理实验显示了量子理论的微妙性，包括“波粒二重性”以及二粒子缠结态的不可分性.本文的分析表明：测量在破坏原来存在于客体及其环境间的量子相干性时必然要改变客体.因而“物理实在”应在两个层次上定义： “自在之物”与“为我之物” .量子力学中的波函数则正起了通过“虚拟的测量”将这两个层次的物质联系起来的作用
Two spherical waves and multiple spherical waves interference , and yang ' s interference experiments are simulated by using different methods . two spherical waves interference is focused on the on - plane or out - plane of the spot light source plane and the observing plane . then , we analyze how the temporal coherence of optical waves influence the contrast of the interference pattern 用光波波前叠加的方法实现了对两列球面波干涉、多光束干涉等实验的仿真；用传播矩阵描述衍射光波波前传播的方法对杨氏双缝和双孔干涉实验进行了仿真，并具体详细地分析了单缝衍射对双缝干涉的影响；另外还分析了光场的时间相干性对干涉条纹反衬度的影响。
3 . by investigating the two - atom dipole amplitude - squared squeezing and two - mode second - power : h - squeezing in a system of a two - mode vacuum field interacting with two coupled atoms , the influences of the initial atomic coherence and dipole - dipole interaction on the two types of squeezing have been discussed . the relation between the two types of squeezing has also been revealed 中文摘要3 .研究了双模真空场与两个祸合二能级原子相互作用系统的双原子偶极振幅平方压缩和双模光场二次方h压缩，探讨了原子的初始相干性及原子间偶极相互作用对这两种压缩的影响，并揭示了原子偶极振幅平方压缩和双模光场的二次方h压缩的联系。
