一种基于模型的雷达超分辨方法

基于多目标及其雷达回波信号的建模，本文提出了一种实现雷达超分辨的新方法．该方法的基本思想是将空间上相距很近的多个目标的分辨转化为目标冲激响应的辨识，然后利用最小二乘法估计目标的冲激响应函数．文中还提出了距离分辨概率的概念，给出了其定义．仿真结果表明，新的超分辨方法是十分有效的，井且具有结构简单和分辨力高等特点．     

波导色散对ISAR的影响

波导色散对雷达系统性能的影响，是ＩＳＡＲ等高分辨率雷达所面临的一个问题，本文用成对回波理论对此影响进行了理论分析，得出了具体的计算公式，并且给出了计算机仿真的结果。     

GEOELECTROMAGNETIC FIELDS AND THEIR FRONTIERS OF STUDY

ＧＥＯＥＬＥＣＴＲＯＭＡＧＮＥＴＩＣＦＩＥＬＤＳＡＮＤＴＨＥＩＲＦＲＯＮＴＩＥＲＳＯＦＳＴＵＤＹ￥ＨｅＪｉｓｈａｎ（ＣｅｎｔｒａｌＳｏｕｔｈＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ，Ｃｈａｎｇｓｈａ，４１００８３，Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ：Ｉ...     

Logarithm bispectrum-based approach to radar range profile for automatic target recognition

The paper starts by the definition of logarithm bispectrum and the presentation of its properties relative to target recognition. A relationship is established between the logarithm bispectrum feature of a target and that of its high resolution range profile. As a result, the criterion for target recognition, based on the relationship, is induced, and its scheme and pseudocode for implementation are given. Simulation with some acquired outfield data is given to show that the approach is effective and advantageous in both rapid recognition and easy computation.     

带属性的三角网格模型简化算法研究

在计算机视觉，计算机仿真，网络传输中，经常遇到带有颜色，纹理等属性的三角网格模型的简化问题，文中提出一种带属性的三角网格模型简化的算法，该算法将表征网格顶点信息的向量由简单的三维几何信息扩展到包含颜色，纹理等附加信息的多维向量，在R^n空间中用对称Hausdorff距离控制网络简化顺序和精度，既保证了简化网格模型在几何上与补始网格模型尽可能地相似，又较好地保存了初始网格模型的颜色，纹理等信息。     

Improvement of GPS ambiguity resolution using prior height information. Part Ⅱ: The method of using quasi observation

1　ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｍｅｔｈｏｄｏｆｕｓｉｎｇｈｅｉｇｈｔｖａｌｉｄａｔｉｏｎ ,ｔｈｅｐｒｉｏｒｈｅｉｇｈｔｉｎｆｏｒｍａｔｉｏｎｉｓｕｓｅｄｏｎｌｙｔｏｄｅｃｒｅａｓｅｔｈｅｓｅａｒｃｈｖｏｌｕｍｅｏｆｔｈｅｉｎｔｅｇｅｒａｍｂｉｇｕｉ     

随机数不随机问题的成因及其解决办法初探

计算机在连续产生大量随机数时，会出现后面的随机数序列重复前面的随机数序列，即出现“随机数不随机”问题。本文通过对随机数产生的机理进行分析，说明了产生这种现象的原因，并分别不同情况，找出了相应的解决办法。     

PDE blending surfaces with C continuity

In this paper, we propose to use a general sixth-order partial differential equation (PDE) to solve the problem of C² continuous surface blending. Good accuracy and high efficiency are obtained by constructing a compound solution function, which is able to both satisfy the boundary conditions exactly and minimise the error of the PDE. This method can cope with much more complex surface-blending problems than other published analytical PDE methods. Comparison with the existing methods indicates that our method is capable of generating blending surfaces almost as fast and accurately as the closed-form method and it is more efficient and accurate than other extant PDE-based methods.     

Violet

Violet is an easy-to-use theorem prover based on locking resolution, with integrated equality extensions that use term rewriting and Knuth–Bendix completion. Violet participated in the CADE-13 ATP System Competition.     

基于小波多分辨率分析的多通道遥感图像数据融合方法及实现

对同一目标的多波谱遥感图像进行融合、是富集有用信息、提高图像空间分辨率和解释水平的有效手段，本文提出了基于小波多分辨率分析的多通道遥感图像数据融合的原理、方法及实现过程，实例分析其结果良好。