为了解决目前目标识别方法应用平台难以实现小体积、低成本的问题,利用线扫描完成激光引信的探测成像,得到了DHGF算法的样本矩阵,建立了基于激光线扫描成像引信的四元评价算法对典型目标的识别模型。该模型使用德尔菲法确定目标轮廓相似度指标集;采用层次分析法确定指标权重分配;运用灰色系统理论确定评价灰类,得到单因素模糊评判矩阵;通过模糊数学理论得出目标识别的评价结果。该算法克服了在小样本数据的情况下,目标识别过程中的模糊性、不确定性等问题,并完成了对典型目标的仿真。仿真结果表明:该算法具备对典型目标的识别能力,可为激光扫描成像引信目标识别提供参考。

We propose a scheme for carpet anti-cloak based on the transformation optics. An anti-cloak layer is designed, which can make the external electromagnetic waves break the carpet cloak shielding. The external electromagnetic waves can be detected under the carpet cloak, while not affecting the role of carpet cloak of stealth. The Jacobian transformation tensor is calculated by numerically solving the Laplace equations with proper boundary condition. Thus, it is possible to design the anti-cloak layer of irregular shape. The simulation results demonstrate the feasibilities and flexibilities of the structure. Design details and full-wave simulation results are provided.

A modified method of image denoising based on multi-scale mathematical morphology is proposed to be used in the earthquake ruin scene. A new morphological arithmetic operator is desiged according to the basic operations in the mathematical morphology, then the multi-scale operation filter is used based on new operator to realize image denoising. Compared with the other methods, this new method can reduce noise of earthquake ruin scene effectively and has a good practicability.

以区间数学为理论基础，提出了作战效能灵敏度分析的区间方法。可在不进行求导数运算的条件下，通过区间运算获得作战效能随**装备的技术战术性能和作战使用方式改变而变化的情况。在强非线性情况下，区间灵敏度分析方法对参数变化范围的选取比差分法或摄动法的要求要低。通过数值算例表明了用区间方法进行作战效能灵敏度分析的可行性和有效性。

航空图像边缘提取对于图像的判读具有重要的辅助作用。在分析航空图像特点和形态学基本原理的基础上，提出了一种新的复合型数学形态学边缘提取算法。通过对一幅实际的航空图像的仿真实验，结果表明，该方法比传统的数学形态学边缘提取算法具有更好的抗噪能力和边缘提取效果，并且算法运算时间短。

使用自主研发的基于DSP 片上系统的闪电光电信号同步探测与定位系统，对2009 年8 月杭州地区自然闪电的光辐射信号和电磁脉冲信号进行了同步探测。从信号时域特征的角度对获得的闪电数据进行了统计分析，得出光电信号在信号开始时间差、到达峰值时间差、脉冲上升沿时间差和脉冲宽度时间差等4 个特征上的统计结果。结果表明：闪电光信号脉冲的发生时间和峰值到达时间均滞后于电信号，且脉冲上升沿宽度和脉冲宽度比电信号宽；云闪信号的上述四个特征值均比地闪信号大。最后，基于模糊数学理论，将上述4 个特征作为模糊识别特征，建立模糊隶属度函数，对闪电类型进行了识别研究，识别率达到95%以上。

在光子晶体光纤(PCF)的熔接过程中，由于包层空气孔结构的存在，同在熔接过程中存在着潜在的空气孔形变，使得加热过程更为复杂。对待熔的光子晶体光纤的热传导特性进行了研究，以二氧化碳激光作为熔接热源，根据传热学及能量守恒定律建立三维对称的热传导模型，进而对光子晶体光纤熔接的瞬态传热过程进行仿真分析和实验研究。分析表明，该模型可以很好地确定影响光子晶体光纤熔接过程中热传导特性的各个主要因素，为最终确定最佳熔接条件建立理论基础。

利用先进的基于CCD的裂缝测试仪采集到试件的表面裂缝。为了计算裂缝宽度，必须准确识别出裂缝边缘。针对裂缝特征，提出了直方图法、结合法、梯度法和改进Roberts法等4种图像测量分析方法，并分别从原理上进行了解释，同时设计了实验标定图进行图像处理和测量，给出了四种分析方法的处理效果图、裂缝宽度及其误差分析。分析结果表明，类判别和数学形态学的结合法在测量裂缝方面效果较好，并将其应用于实际测量中，实践证明了该方法的有效性。

A high energy all-solid-state blue laser with wavelength of 455 nm is proposed, which can be used in laser communication underwater or in the differential absorption lidar (DIAL) system. Ti:sapphire crystal is suitable material and is pumped by the second harmonic generation (SHG) of Nd:YAG laser. The pumped laser of 1000 mJ, 10 Hz is used, and the output wavelength of Ti:sapphire resonator cavity is controlled by external injection seeding. Parameters of the resonator cavity of Ti:sapphire crystal is carefully calculated and optimized. Pulsed 455-nm blue laser exceeding 100 mJ is obtained through frequency-doubled Ti:sapphire laser.

Annular subaperture interferometry (ASI) has been developed for low cost and flexible test of rotationally symmetric aspheric surfaces, in which accurately combining the subaperture measurement data corrupted by misalignments and noise into a complete surface figure is the key problem. By introducing the Zernike annular polynomials which are orthogonal over annulus, a method that eliminates the coupling problem in the earlier algorithm based on Zernike circle polynomials is proposed. Vector-matrix notation is used to simplify the description and calculations. The performance of this reduction method is evaluated by numerical simulation. The results prove this method with high precision and good anti-noise capability.