Abstract:ＩｎｔｒｏｄｕｃｔｉｏｎＭｏｓｔｏｆｍｏｄｅｒｎＨｇ1-ｘＣｄｘＴｅｔｅｒｎａｒｙｃｏｍｐｏｕｎｄＩＲｐｈｏｔｏｄｅｔｅｃｔｏｒｓａｒｅｍａｎｕｆａｃｔｕｒｅｄｆｒｏｍＬＰＥｆｉｌｍｓｇｒｏｗｎｏｎＣｄＴｅａｎｄＣｄＺｎＴｅｓｕｂｓｔｒａｔｅｓ[1～ 4 ] .Ｃｏｍｐｏ ｓｉｔｉｏｎａｌｄｅｐｔｈｎｏｎｕｎｉｆｏｒｍｉｔｙｓｅｅｍｓｔｏｂｅａｎｉｎｈｅｒｅｎｔｆｅａｔｕｒｅｏｆｔｈｅｓｅｆｉｌｍｓ[5,6 ] .Ｉｔｃａｕｓｅｓｔｈｅｖａｒｉａｔｉｏｎｓｏｆｂａｎｄ ｇａｐｗｉｔｈｔｈｅｄｅｐｔｈ ,ｔｈｕｓａｆｆ…

Abstract:SIMS (secondary ion mass spectrum) and variable temperature Hall measurement were employed to study the doping of Ag and the electrical properties of Ag doped HgCdTe films grown by LPE. The results show that the Ag doping in HgCdTe by soaking HgCdTe in AgNO 3 solution is effective and the dopant concentration is equal to the Hg vacancy concentration of undoped HgCdTe film. After Ag doping, the acceptor energy of p type HgCdTe has an obvious decrease. It was also found that the electrical properties of Ag doped HgCdTe films can keep stable at room temperature.

Abstract:提出了一种基于多帧低分辨率图像重建高分辨率图像的实时串行迭代算法,在得到与传统多帧算法图像质量相近的同时,大大节省了计算所需的存储空间.给出了该算法的收敛性的证明.计算机模拟结果表明该方法和实验的一致性.最后在一个实际系统验证该方法.

Abstract:By assuming that a linearly polarized plane wave was incident obliquely onto a small F number lens, ray tracing and Stratton Chu diffraction formula were used to calculate the vectorial diffracted field in the focal space of the lens. Phase distribution of the field over the exit surface of the lens, which determined the pattern of the diffracted field, was illustrated. The power distributions of the diffracted field in the focal plane of a hyperbolic lens were calculated for different incident angles, which agreed well with the experiments. The vectorial characteristics of the diffracted field were examined. Calculation and experiments were carried out in millimeter wavelength range.

Abstract:Digital watermarking has become one of the effective solutions to the protection of copyright of multimedia data. Imperceptibility and robustness, which are the basic requirements of digital watermark, conflict with each other. So, looking for a trade off of the pair has become one of the keys in watermarking. A scenario of multidimensional watermark for resolving rightful ownership of digital images was proposed in this paper. The multidimensional watermark, whose vectors are mutually independent, was embedded into image in the DCT domain in parallel by using spread spectrum technology. The robustness of multidimensional watermark was improved without enhancing the watermark energy.

Abstract:The classification mechanism of support vector machine (SVM) was analyzed in detail. The one dimensional image of radar target was recognized by SVM. The results of the simulation show the advantage of SVM over other methods.

Abstract:选取NOAA卫星AVHRR通道3（3.55-3.93μm）观测资料，分析云顶粒子的物理性质，并用地面雨量和雷达观测资料对卫星反演分析结果进行验证，分析结果显示通道3反射率小，云顶粒子尺度大时易产生降水，当云层为单一层次时，通道3的反射率小值区与雷达回波区间具有良好的对应关系，证实了在降水过程中卫星分析云顶粒子尺度结果与雷达观测一致。

Abstract:The design of the high power millimeter wave transmission line for Electron Cyclotron Resonance Heating (ECRH) system on the HT 7 Tokamak was given. The waves output from the gyrotron with peak power of 200kW, frequency 60GHz and pulse length around 100ms was transmitted for several tens of meters through this line. In the transmission process, the wave's mode was converted from initial TE 02 mode to TE 01 and then to the semi linear TE 11 mode by two mode converters. In the end of the transmission line, the wave was coupled to the semi optical antenna and then was launched into plasmas along a special angle.

Abstract:A new method was presented for synthesis of infrared images of complicated terrain background and an image segmentation model was established based on the theory of Markov random field. By taking the effects of ambient and meteorological factors into account, the infrared features of different terrain scenes were simulated and calculated. The segmented visible pictures and the calculated values of the infrared features were synthesized by assigning the different gray scales to the pixels of the corresponding regions of the segmented pictures in order to obtain the infrared images of the complicated terrain scenes.

Abstract:根据单平面技术将多功能子系统分为基本块和简单电路模型的设计方法，用于设计单平面的双相调制器/混频器，主要用于智能交通收费系统的微波非接触式ID卡中，其工作频率为5.8GHz，采用电磁场计算与传统传输线及计算机辅助设计相结合的方法分析设计了该子系统的主要部件，使其具有尺寸小、集成度高、结构紧凑、性能好、成本低、易于加工等优点。

Abstract:在分析各种过渡结构的基础上，用高频分析软件HFSS仿真设计了Ka频段直线型脊波导过渡和曲线型脊波导过渡结构，在31-38GHZ的宽带范围内，插入损耗小于0.35dB，实测结果与仿真结果基本符合，直线型脊波导结构简单，适合工程应用。

Abstract:From the point of view of the data quality collected by remote sensors, the selection and determination of the CCD MTF along track are discussed by combining the geometric and radiometric quality of the image with the MTF along track.

Abstract:The linear polarization sensitivity of existing scanning systems is comparatively high and changes with the scanning angle. To overcome the above shortcomings, a new design of scanning system was given. It can reduce the effect of the scanning angle on the linear polarization sensitivity while keeping low linear polarization sensitivity.

Abstract:根据相对论返波管(RBWO)的非线性理论,数值模拟了耦合阻抗单步跃变型RBWO效率与束流参量、耦合阻抗跃变位置、高低耦合阻抗比值的依赖关系,结果表明器件最优化效率可达到50%.设计制造了一个X波段高功率耦合阻抗单步跃变型RBWO,运用全电磁粒子模拟程序仿真了器件中注波互作用过程,预见出器件功率、效率、频率等性能参量.在电子注电流、注加速电压、互作用区长度相同的实验条件下,测得变阻抗器件实验效率约为均匀阻抗型器件效率的2倍.

Abstract:The Domain Decomposition Method(DDM) in conjunction with FDFD and Modes Expansion was used to analyze the discontinuity of the rectangular recangular waveguide. In the regular part of the rectangular waveguide, the electromagnetic field was analytically developed by the waveguide modes and in the irregular part the equations of the discrete points were built by FDFD method. The Depres transmission condition was used to connect the adjacent subdomains and the whole domain's solution was achieved by the iterative procedure. Several examples of waveguide discontinuity were calculated. The agreement between the results and that from other methods verifies its accuracy.