Abstract:This paper presents a novel detection method of small moving target.The method combines the information in frames with optical flow.It is composed of three steps:preprocessing,temporal differencing and Lucas-Kanade optical flow based on pyramid construction.The experimental results have shown that the algorithm works well for small moving target detection in real image sequences.

Abstract:In this paper, the electron transition in the quantum well is discussed in detail and the application and physics of quantum well infrared photodetectors and relative quantum devices are analyzed. Finally, the device development trend and research direction are estimated.

Abstract:The structural perfection is very crucial for the applications of Cd1-xZnxTe alloys with excellent photosensitivity and electrical properties. In this paper, the first-principle studies of the electronic structures of Cdl-xZnxTe are presented in brief. The obtained information is very useful to support the available experimental results so that it can provide the theoretical guide for the crystal growth and the design of optoelectronic devices.

Abstract:Emissivity is very important in the data processing of a multispectral thermometer, but it is very difficult to be obtained because of the influence of various factors. In this paper, an emissivity model based on wavelet network is established by combining the wavelet network with the multispectral theory. The simulation result of the method is in good agreement with the hypothesis. The test result has shown that this method is a good method for obtaining the emissivity of objects.

Abstract:According to the principle of the wavelet transform for removing noise in images and the glimmer-and-granule characteristics of low light level (LLL) images,the methods for choosing wavelet and decomposing levels when the wavelet transform is used to remove the noise in LLL images are analyzed. A conclusion that the noise removing requirement of LLL images can be met by using Haar wavelet and decomposing one level is reached.To choose the coefficient threshold for removing noise by wavelet transform,three histograms of wavelet coefficients are analyzed and the algorithm for threshold choosing is designed.On the basis of the designed algorithm and the characteristics of LLL images,an experiential threshold for removing noise is obtained.Through the simulation experiment and the time analysis of algorithm complexity,the trade-off between the real-time ability and the effectiveness of removing noise in LLL images is attained.

Abstract:The calculation of signal-to-noise is an important guideline in system design at the focal plane level. This paper presents a method for calculating SNR by using the equivalent electron number and makes some analyses of this method in theory.

Abstract:把相干态和任意粒子数态作为分束器的输入态，通过条件测量可以得到被剪切了的输出态。本文研究了这些剪切了的输出态的性质。结果显示，当在某一输出端测量到零个光子时，在另一输出端得到的剪切了的输出态呈现较强的压缩和亚泊松分布等非经典效应，而且这种非经典效应受输入粒子数态的粒子数的影响，即输入粒子数态的粒子数较大时其非经典性相对较强。当在其中一个输出端测量到m（m〉0）个光子时，条件测量后的各输出态在光场性质上表现类似，但也都呈现出明显的压缩和亚泊松分布等非经典效应。尤其值得注意的是，当输入的是单粒子数态时，条件测

Abstract:红外列阵摄像机(IRAC)是Spitzer空间望远镜中的三台焦平面仪器之一。这是一台四通道摄像机,能够同时在3．6μm、4．5μm、5．8μm和8．0μm波长处获取宽带图像。四个通道成对地(3．6μm和5．8μm为一对,另一对为4．5μm和8μm)观测焦平面中两个靠得很近的5．2′×5．2′的视场。摄像机中的四个探测器列阵的尺寸均为256×256元,两个较短波长的通道使用InSb探测器,而两个较长波长的通道则使用Si：As IBC探测器。由于红外列阵摄像机具有高灵敏度、宽视场和四色成像功能,因此是一台得力

Abstract:一、探测器技术 1.集成焦平面列阵技术在激光微小卫星网络中的使用（Shlomi Arnon） 2．基于用分子束外延方法生长的多层结构的小间距Hg1-xCdxTe光导体的性能（Galina V．Chekanova等） 3．结构紧凑的新型中波和长波凝视探测器（Alain Manissadjian等）