Adopted "Pyramid Model","Ellipsoidal Quadtrees" and other technologies,combined with the requirement of ordnance equipment support,this paper constructs the basic information system of the ordnance depot based on the digital earth.Besides the basic functions of the digital earth,such as positioning,distance measuring,translating,zooming,landmark managing and flying,etc.,the system also can receive and process various service data.Meanwhile,applied the visual simulation technology,the system also can construct the three dimensional model and the panoramic vies of the military barracks.

Constructing digital earth needs to fusion mass geographic information,elevation information,aerial information,label information and other user-defined business information.How to aggregation scheduler these massive data is the key problem to realize the digital earth platform.Aiming at this problem,network topology implementation information processing software architecture of the digital earth platform for information gathering are analyzed,information classify calls are researched,convergence module design and the global mass image data scheduling strategy are researched.Based on the results above,in the project realized the digital earth platform initially.

针对小波变换提出一种双自适应算法,并将该算法应用于JPEG2000压缩过程中的小波变换,在此基础之上,又提出一种适合于JPEG2000的数字水印算法.该算法利用JPEG2000压缩中的双自适应小波变换,将水印嵌入到量化后的小波系数中.实验证明,该算法具有较好的不可见性和较强的鲁棒性.

小波变换的传统提升算法的滤波器固定,不能随输入信号的变化而改变,针对该问题,结合现有的自适应算法,提出一种双自适应小波变换算法,并对该算法的更新和预测过程进行了自适应调整.实验证明,该算法比传统的提升算法和单纯的自适应更新或自适应预测算法具有更优越的性能.

Improve the grey relationship analysis and introduce the grey target theory, establish the comprehensive difference matrix for improving the precision. Then confirm the proportion of various aerial targets’ index based on threat subjection matrix and make the threat evaluation and sorting of the aerial target. Finally, the test result completely coincides with the result evaluated by genetic BP neural network.

With the color image widely use,the research on digital watermarking of color image has more practical value.According to different sensitivity with human eyes' vision on tricolor(red,green,blue),a digital watermarking algorithm on color image is put forward.This algorithm based on wavelet transform,use different modes to different color components.The results of experiment show this algorithm has better robustness and detection.

JPEG2000 is the new still image coding standard, which has better compression rate and higher flexibility. The coding procedure of JPEG2000 and especially for its kernel algorithm are studied,then focused on the lifting scheme of wavelet transform. The result shows that JPEG2000 is really better than those old still image coding standards.

Extensible markup language(XML)and enterprise Java bean of Java(EJB)are introduced,and summarizeds three typical applications of XML in EJB and gives the correlative discussion in the base of combining to their characteristic.

As an effective approach to solve software crisis,software reuse is getting more and more attention.Software component library is important support in implement of software reuse.Whether or not succeed in software reuse to a great extent depends on the structure,elements and management of reuse component library.The design of component library model based on military equipment support domain is introduced mainly,and the using of software reuse based on component in military equipment support domain is discusses.

实现异构数据库之间的信息共享,是解决信忠"孤岛"的主要技术途径之一.本文探讨了应用基于XML技术作为信息交换工具的方式,来构建对异构数据库之间进行访问的中间件.

今天,面向对象软件已经成为软件行业的主流,人们已经习惯于使用面向对象的软件开发工具设计开发面向对象软件并使之硕果累累.但是好的软件系统离不开严密的软件测试体系,在面向对象软件空前繁荣的今天如何对其进行有效的测试已经成为软件界的一个热门话题.测试面向对象软件可以使用传统过程软件的测试方法,但是面向对象软件系统在某些方面尤其是在单元测试方面提出了一些新的挑战,其测试策略值得深入探讨.本文从面向对象软件的自身特点出发,在传统的过程软件测试的基础上探讨如何有效地对面向对象软件进行测试.

遗传算法(GeneticAlgorithm)是一类借鉴生物界的进化规律(适者生存,优胜劣汰遗传机制)演化而来的随机化搜索方法.迄今为止,遗传算法已成为进化算法中最广为人知的算法.我们针对遗传算法在优化求解上具有的独特优越性,对遗传算法进行了初步的研究,通过实现对其在具体问题中的优化求解,来达到熟悉和掌握遗传算法的目的,并在此基础上进一步对遗传算法在科学与工程中的运用加以体会.

证明了一个新的锐角原理,在不使用连续性条件的情况下,给出了在一致光滑Banach空间中一类非线性算子方程的可解性定理.