具有全向波束高增益的引信共形阵列天线

针对对地弹药引信天线不能满足宽落角探测需求的问题,提出一种基于共形阵列天线技术的宽波束产生方法,通过采用偶极子、微带天线阵列共形于引信风帽内腔表面,实现侧向全向辐射特性。该方法设计的天线可以随风帽的形状而改变,不占用其余空间。经测试验证表明该天线在H面具有全向辐射特性且增益较高。     

小型化宽频带圆极化半圆形微带贴片天线

针对无线通信中单贴片圆极化微带贴片天线带宽很窄的问题,提出了小型化半圆形宽频带圆极化微带天线。该天线通过在半圆形辐射贴片上开一组尺寸和位置非对称的矩形槽实现圆极化,应用非共面的临近耦合馈电补偿馈电探针的电感展宽天线的带宽。仿真结果表明,在2.30~3.04GHz范围内,天线的回波损耗小于-10dB,阻抗带宽27.7%;在2.37~2.54GHz范围内,天线的轴比小于3dB,圆极化带宽6.9%;在宽带范围内天线的增益大于6dB。与圆极化E形微带天线相比,不仅提高了带宽,而且贴片面积缩小了40%。     

可识别方位引信共形微带天线

由于微带天线低剖面的结构特点，它非常适合用作共形天线。因此共形微带天线理论与技术在近十几年来得到了很快的发展。本文采用国际上近几年来流行的多端口网络模型理论，设计了一种与圆柱体共形的九单元微带串馈线阵，并得到了与理论分析吻合的测试结果。该天线的特点是尺寸小，频带宽，波速窄，主波速有２０°扫描角，圆周方向的波速宽度为１１０°，可作为导弹定向引信系统的探测天线。     

破甲弹近炸引信的抗干扰性设计

研究分析了适用于反坦克破甲弹的激光近炸引信在战术使用中可能遇到的主要干扰源。讨论了激光定距探测系统提高抗干扰性的技术途径和设计原理，并报导了具有良好抗干扰性的激光定距探测系统与专门识别铁磁性装甲目标的磁探测系统复合，构成一种高抗干扰性能、作用更为可靠并有良好引一战配合性能的新型破甲弹近炸引信。     

与弹头共型的超宽带微带引信天线

针对常规微带天线带宽较窄,难以应用到宽频带系统上的问题,提出了超宽带与弹头共型微带天线。该天线以微带贴片天线为设计基础,在对辐射面宽度渐变处理,开窗以及接地面悬空等特殊结构设计,改善阻抗匹配特性。采用基于有限元方法的电磁仿真软件HFSS对所设计的天线进行仿真与测试结果表明,该天线极大的增加了带宽,在3.6～8.5 GHz的频率范围驻波比小于2.0,其相对带宽达到了68%,且天线在整个工作频段内具有良好的辐射特性。     

伪随机码近炸引信的模糊函数

针对目前对伪随机码（伪码）引信抗干扰和距离分辨力的研究大多从伪码的相位调制与脉位调制定性描述,推导过程复杂,给出了伪码近炸引信信号的模糊函数。利用模糊函数,对伪码近炸引信信号波形进行分析,包括速度和距离分辨力,结果同样表明伪码近炸引信具有很好的距离分辨力、较强的探测和抗干扰性能。     

迫弹电容近炸引信技术研究

结合电容近炸引信的工作原理,分析了杀爆迫弹的最佳炸高、控制信号处理、定向探测电路设计及抗干扰等四个迫弹近炸引信设计过程中的关键技术问题.     

无线电近炸引信调制波形优劣判据的几点探讨

无线电近炸引信调制波形对引信的性能起着十分重要的作用。在无线电近炸引信调制波形的优化设计中,如何确定探测距离、分辨力、探测精度、抗干扰准则等是波形优化设计的关键之一。本文根据近炸引信对不同目标所遇到的不同杂波干扰以及战技指标中关于探测距离、分辨力、抗干扰、探测精度等要求,提出了无线电近炸引信调制波形优化设计的距离准则、分辨力准则等,也就是电近炸引信调制波形优劣判据的建立方法。     

介质覆层对圆柱共形微带天线性能的影响研究

研究了圆柱共形微带天线加载介质层对天线性能的影响。首先采用互易定理分析了加载介质层后圆柱共形微带天线辐射特性,然后运用有限元法计算了天线的方向图．与文献结果进行了比较,验证了程序的有效性。最后。对不同介质覆层厚度和不同覆盖层介电常数下天线的散射参数和辐射方向图进行了仿真。结果表明,圆柱共形微带天线加载介质层后,天线的谐振频率产生了漂移而且阻抗带宽明显降低,介质层厚度对天线阻抗带宽的影响较大,而介电常数的影响相对较小。     

舰炮近炸引信的发展思路

首先论述了国外部分舰炮近炸引信的功能与性能特点，在此基础上分析其设计思想，并提出了我国舰炮近炸引信的发展思路。     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.