（Hg，Cd）Te薄腰的LPE生长条件与纵向组分分布

根据热力学理论推导出（Ｈｇ，Ｃｄ）Ｔｅ液相外延生长过程中有效分凝系数的表达式并与实验结果进行比较，由此分析了Ｈｇ压、溶液组成、降温速度及过冷度等对（Ｈｇ，Ｃｄ）Ｔｅ液相外延薄膜纵向组分分布的影响．     

HgCdTe阳极硫化膜分析

采用含水硫化的方法对ｐ型ＨｇＣｄＴｅ材料进行了表面钝化。ＸＰＳ分析结果表明，Ｈｇ０．７３４Ｃｄ０．２６６Ｔｅ表面形成了ＣｄＳ薄膜，膜层里含有少量的Ｔｅ和Ｈｇ不含氧。     

CO2激光制导用光伏碲镉汞四象限探测器组件

报道了ＣＯ_２激光制导用光伏ＨｇＣｄＴｅ四象限探测器组件研究的进展情况，采用中ＨｇＣｄＴｅ体晶材料已制备出直径达２ｍｍ的四象限二极管阵列，其平均探测率为１．４１×１０（１０）ｃｍＨｚ（１／２）／Ｗ，平均响应率为２１４Ｖ／Ｗ。该探测器配有四通道的前置放大器，整个组件具有３．１５×１０（１０）ｃｍＨｚ（１／２）／Ｗ的平均探测率和优于±３％的响应均匀性。     

HgCdTe体晶的组份均匀性分析

利用ＳＰＲＩＴＥ探测器的截止波长研究了布里奇曼、Ｔｅ溶剂和固态再结晶３种方法制备的ＨｇＣｄＴｅ体晶组份的均匀性。实验结果表明：３种方法生长的ＨｇＣｄＴｅ晶片的组份均匀性大致相当。用任意一种材料研制的一个８条ＳＰＲＩＴＥ探测器,其任意２条的截止波长差不大于０．８μｍ的概率大于９８％。     

带前放和读出装置的8元长波HgCdTe组件

本文报道了８元长波红外Ｈｇ＿（１－ｘ）Ｃｄ＿ｘＴｅ光导探测器列阵组件的结构，制作工艺和主要性能参数。     

激光辐照PC型HgCdTe探测器热效应的计算

通过测量ＰＣ型ＨｇＣｄＴｅ探测器电阻与温度的关系及激光辐照下电阻随时间的变化，建立了热模型，计算了三种损伤机制下的激光损伤阈值。     

（Hg,Cd）Te薄膜的LPE生长条件与纵向组分分布

根据热力学理论推导出（Ｈｇ，Ｃｄ）Ｔｅ液相色延生长过程中有效分凝系数的表达式并与实验结果进行比较，由此分析了Ｈｇ压、溶液组成、降温国速度及过度等对（Ｈｇ，Ｃｄ）液相外延薄膜纵向组分分布的影响。     

长波光导HgCdTe探测器的输运特性

测量了长波光导ＨｇＣｄＴｅ线列探测器在１．２～３００Ｋ的电阻率－温度（Ｒ－Ｔ）特性，结果表明：高性能和低性能探测元的Ｒ－Ｔ特性明显不同，前者有与正常ＨｇＣｄＴｅ材料Ｒ－Ｔ关系相似的变化规律，后者则与简并ＨｇＣｄＴｅ材料相似．探测器的性能与最大电阻温度有对应关系     

焦平面列阵的智能加工：用于（Hg,Cd）Te液相外延的传感器及控制技术

在生长用于焦平面阵列的高质量（Ｈｇ,Ｃｄ）Ｔｅ薄膜方面,液相外延（ＬＰＥ）是优选用的技术,在生产环境中成功执行这一流程需要研究先进的传感器和流程控制技术,这样可以提高产量,降低成本,本文将评论得克萨斯仪器公司的智能处理焦平面列阵计划所取得的进展,（Ｈｇ,Ｃｄ）Ｔｅ液相外延薄膜是在（１１１）Ｂ取向的（Ｃｄ,Ｚｎ）Ｔｅ衬底上生长的,衬底放在盛有大量（４５００ｇ）碲镉汞溶液的垂直浸渍反应器中,在一个生长     

HgCdTe—CdTe异质结构的变频导纳特性

采用宽频带导纳测试系统研究了Ｈｇ０．６６Ｃｄ０．３４Ｔｅ－ＣｄＴｅ异质结构和Ａｌ－半绝缘ＣｄＴｅ－Ｈｇ０．６６Ｃｄ０．３４Ｔｅ结构样品的变频导纳特性，分析了不同结构样吕的测试结果，表明：异质结ＨｇＣｄＴｅ表面空穴积累，ＣｄＴｅ表面空穴耗尽，界面处的势垒使载流子局限于ＨｇＣｄＴｅ体内，样品的光伏响应光谱在２９７０ｃｍ＾－１和３６５０ｃｍ＾－１处各有一个响应峰，前者对应于界面ＨｇＣｄＴｅ的本征光伏效庆     

正交复用QAM系统的定时和载波相位跟踪新算法

在数字信号传输系统中，正交复用ＱＡＭ（ＯＭＱＡＭ）是目前最有效的一种抗信道失真传输技术，但它对系统的定时偏移和载波相位误差非常敏感。本文基于高阶累积量技术，导出了一种新的ＯＭＱＡＭ系统定时和载波相位的跟踪算法。计算机仿真证实了这一理论分析结果，并同原有的Ｈｉｒｏｓａｋｉ算法做了比较     

(HgCd)Te探测器Franz-Keldysh效应有效强度的一种表征方法

提出一种表征 ( Hg Cd) Te探测器 Franz- Keldysh效应有效强度的简易方法 ,即用 ( Hg Cd) Te探测器在反偏压及零偏压时的输出电压比来表征其 Franz- Keldysh效应有效强度的强弱 ,实验结果证实了这种方法有效、可行 .     

(HgCd)Te探测器Franz-Keldysh效应有效强度的一种表征方法

提出一种表征（HgCd)Te探测器Franz-Keldysh效应有效强度的简易方法,即用（HgCd)Te探测器在反偏压及零偏压时的输出电压比来表征其Franz-Keldysh效应有效强度的强弱,实验结果证实了这种方法有效,可行。     

Three-dimensional blind deconvolution of SPECT images

Thanks to its ability to yield functionally rather than anatomically-based information, the three-dimensional (3-D) SPECT imagery technique has become a great help in the diagnostic of cerebrovascular diseases. Nevertheless, due to the imaging process, the 3-D single photon emission computed tomography (SPECT) images are very blurred and, consequently, their interpretation by the clinician is often difficult and subjective. In order to improve the resolution of these 3-D images and then to facilitate their interpretation, we propose herein to extend a recent image blind deconvolution technique (called the nonnegativity support constraint-recursive inverse filtering deconvolution method) in order to improve both the spatial and the interslice resolution of SPECT volumes. This technique requires a preliminary step in order to find the support of the object to be restored. In this paper, we propose to solve this problem with an unsupervised 3-D Markovian segmentation technique. This method has been successfully tested on numerous real and simulated brain SPECT volumes, yielding very promising restoration results.     

Intermediate Annotationless Dynamical Object-Index-Based Query in Large Image Archives with Holographic Representation

This paper presents a new parallel and distributed associative network-based technique for content-based image retrieval (CBIR) with dynamic indices. Unlike any prior artificial associative networks (AAM), this new associative search network has the unique ability to explicitly focus on any subset of pixels in the image. It can also provide a feedback meta-quantity on the quality of outgoing information. The network is founded on a bi-modal representation of information elements which in addition to basic information also includes meta-states. Its computational model has been derived from optical holography. These unique capabilities coupled with usual advantages of associative computing (adaptability, efficiency, ability to cope with imprecision, parallel and distributed mode of computation) now for the first time make it possible to realize a CBIR technique based on associative computing. This new CBIR strategy provides an inquirer greater flexibility to independently and dynamically construct object-indices without depending on the fixed, predefined ad hoc indices used by traditional CBIR approaches. The paper presents the mechanism, architecture, and performance of an image archival and retrieval system realized with this new network.     

Elimination of Inclusions in (CdZn)Te Substrates by Post-grown Annealing

Post-grown annealing of (211) (CdZn)Te substrates has been used for elimination of Te and Cd inclusions with the objective of improving the yield of inclusion-free substrates for MBE growth of (HgCd)Te. Different annealing temperatures and Cd/Te overpressures were used to find the optimum annealing conditions. Te inclusions were significantly reduced by Cd-rich annealing at temperatures higher than 660°C, together with increasing the infrared transmittance at 10 μm to above 60%. Good crystalline quality was preserved after the annealing. Te-rich annealing at 700°C was found to be the optimum method for elimination of most of the Cd inclusions; infrared transmittance at 10 μm was suppressed by the annealing, however. Final Cd-rich annealing is recommended for infrared transmittance improvement.     

Formation and propagation of p-n junction in p-(HgCd)Te caused by dry etching

The extended model describing the formation and propagation of a converted n-type layer in p-(HgCd)Te during dry etching (DE) based on the ultrafast diffusion of Hg interstitials and their recombination with Hg vacancies is presented. A couple of one- and two-dimensional equations are solved numerically to characterize the kinetics of the p-n junction. The time dependence of the p-n junction depth and ratio of lateral extension under the shielding mask to the depth of the p-n junction are calculated considering a detailed initial condition of the Hg-interstitial surface source.     

一种多输入多输出变换域通信系统的设计及其抗干扰性能研究

传统多输入多输出技术可以提高信道容量,但不能解决信号抗干扰问题;而变换域通信系统已经被证明是一种良好的抗干扰通信系统。通过引入变换域处理技术,提出了一种多输入多输出变换域通信系统(MIMO-TDCS),旨在突破传统MIMO系统的应用瓶颈。对其收发信机模型和抗干扰机制作了简要介绍,并通过仿真窄带干扰下的误码率性能,表明MIMO-TDCS是一种可靠的抗干扰通信手段。     

A Visual Model Weighted Cosine Transform for Image Compression and Quality Assessment

Utilizing a cosine transform in image compression has several recognized performance benefits, resulting in the ability to attain large compression ratios with small quality loss. Also, incorporation of a model of the human visual system into an image compression or quality assessment technique intuitively should (and has often proven to) improve performance. Clearly, then, it should prove highly beneficial to combine the image cosine transform with a visual model. In the past, combining these two has been hindered by a fundamental problem resulting from the scene alteration that is necessary for proper cosine transform utilization. A new analytical solution to this problem, taking the form of a straightforward multiplicative weighting function, is developed in this paper. This solution is readily applicable to image compression and quality assessment in conjunction with a visual model and the image cosine transform. In the development, relevant aspects of a human visual system model are discussed, and a refined version of the mean square error quality assessment measure is given which should increase this measure's utility.     

新型机载激光测深系统及其飞行实验结果

新研制的机载激光测深系统与第一代机载激光测深系统相比,在探测信号采集率、浅水测量能力、测点定位精度和系统的自动化方面都有较大的提高。新系统采用1000 Hz激光器以提高测量密度,分设深水浅水双通道接收回波信号以提高浅水探测能力,装配高精度的惯性导航系统(IMU)和全球定位系统(GPS)提高了测点的定位精度和深度精度,数据后处理进行了潮汐改正和波浪改正提高深度测量的精度。系统在某海域进行了多次飞行实验,实验数据经过分析和处理,得到了比较满意的结果,表明该激光测深系统在测深精度和测量效率等方面,已经接近实用化。