布撒器雷达截面计算与测量

用物理光学法计算了布撒器的雷达截面,并与外场测量结果进行了比较。计算的RCS～θ曲线与测量的RCS～θ曲线变化趋势相同,在典型方向上的计算结果与测量结果比较吻合。表明镜面回波在强度上占绝对优势的目标RCS计算中,物理光学法可以给出工程上可用的结果。     

采用640×512元探测器的机载红外系统设计

连续变焦红外探测系统具有在变焦过程中不会丢失跟踪目标的优点。针对中波640×512元红外焦平面凝视探测器设计了一套1∶20小型高分辨率连续变焦红外系统,对红外系统的设计、非均匀校正方法进行了深入研究,对系统的灵敏度（NETD和MRTD）进行了分析计算和测试。试验结果表明,使用640×512元探测器的连续变焦红外系统具有分辨率高、灵敏度高、体积小和像质好等特点,满足设计要求,可用于机载光电探测和跟踪系统。     

基于主被动量子关联成像的超分辨抗干扰探测系统研制

针对大气湍流以及不同光照条件下难以成像的问题,提出了基于空间光场调制的主被动量子关联成像方案。研制了超分辨抗干扰的主被动量子关联成像原理样机,并完成了超分辨、抗大气湍流以及不同光照条件下的外场实验,验证了主被动量子关联成像原理样机的全天时抗干扰成像能力,实现了超分辨的远距离成像探测。本方案为远距离遥感、极弱背景探测提供了一种有效的成像技术手段。     

离子推进器和流量控制单元

使用电动电源线确保使用电力,它等于几十千瓦。 建议它应该高达10000秒。 Keldysh研究中心（KeRC）正在开发推进系统。 35千瓦离子推进器和FCU-500流量控制单元。 IT-500和FCU-500的2000小时寿命测试是 离子推进器大部分运行2018小时,使用40千克氙气。 本文还介绍了磁场和离子光学的改进以及石墨网格的发展状况。     

Research of Optical Fiber Coil Winding Model Based on Large-deformation Theory of Elasticity and Its Application

Optical fiber coil winding model is used to guide proper and high precision coil winding for fiber optic gyroscope (FOG) application. Based on the large-deformation theory of elasticity, stress analysis of optical fiber free end has been made and balance equation of infinitesimal fiber is deduced, then deformation equation is derived by substituting terminal conditions. On condition that only axial tensile force exists, approximate curve equation has been built in small angle deformation scope. The comparison of tangent point longitudinal coordinate result between theory and approximation gives constant of integration, and expression with tangent point as origin of coordinate is readjusted. Analyzing the winding parameters of an example, it is clear that the horizontal distance from the highest point of wheel to fiber tangent point has millimeter order of magnitude and significant difference with fiber tension variation, and maintains invariant when wheel radius changes. The height of tension and accurate position of tangent point are defined for proper fiber guide. For application to fiber optic gyroscope, spiral-disc winding method and nonideal deformation of straddle section are analyzed, and then spiral-disc quadrupole pattern winding method has been introduced and realized by winding system. The winding results approve that the winding model is applicable.     

改善离子推力器束流均匀性的方法

离子推力器的束流分布,直接影响离子推力器离子光学系统（亦称栅极组件）的性能和寿命。通过对离子推力器离子光学系统的改进和放电室磁场的优化,使束流均匀性系数R值达到0.7左右。离子推力器束流分布均匀性的有效提高,有助于改善离子光学系统的受热分布,降低离子光学系统的温度,并能减小其温度差,使离子光学系统的热应力和热变形降低,进而延长离子推力器的寿命。     

空间自适应光学研究

文章阐述了空间成像光学系统发展状况,揭示了空间自适应光学的重要意义;从误差源、系统一体化建模与仿真、关键技术及地面实验验证系统四方面探讨了空间自适应光学的主要研究内容．并提出了其未来的前沿研究方向。     

Integrated optimization analyses of aerodynamic/stealth characteristics of helicopter rotor based on surrogate model

Based on computational fluid dynamics(CFD)method,electromagnetic high-frequency method and surrogate model optimization techniques,an integration design method about aerodynamic/stealth has been established for helicopter rotor.The developed integration design method is composed of three modules:integrated grids generation(the moving-embedded grids for CFD solver and the blade grids for radar cross section(RCS)solver are generated by solving Poisson equations and folding approach),aerodynamic/stealth solver(the aerodynamic characteristics are simulated by CFD method based upon Navier–Stokes equations and Spalart–Allmaras(S–A)turbulence model),and the stealth characteristics are calculated by using a panel edge method combining the method of physical optics(PO),equivalent currents(MEC)and quasi-stationary(MQS),and integrated optimization analysis(based upon the surrogate model optimization technique with full factorial design(FFD)and radial basis function(RBF)),an integrated optimization analyses on aerodynamic/stealth characteristics of rotor are conducted.Firstly,the scattering characteristics of the rotor with different blade-tip swept and twist angles have been carried out,then time–frequency domain grayscale with strong scattering regions of rotor have been given.Meanwhile,the effects of swept-tip and twist angles on the aerodynamic characteristic of rotor have been performed.Furthermore,by choosing suitable object function and constraint condition,the compromised design about swept and twist combinations of rotor with high aerodynamic performances and low scattering characteristics has been given at last.     

航天器上升段轨道快速重构算法

针对航天器上升飞行过程中由于干扰的影响导致实际轨道偏离初始设计轨道的问题,提出了基于状态量提前修正的航天器上升段轨道快速重构算法。使用该算法对大气干扰下上升段轨道进行了快速重构仿真分析,结果表明,该算法能够综合考虑上升段飞行过程的状态量约束、终端约束、入轨精度、重构时间等因素,实现快速重构。     

隐身等离子体的几个相关问题研究

在目标的雷达隐身方面,等离子体具有巨大的应用潜力。对隐身应用时产生等离子体的气压、放电气体种类以及放电方式进行了论述。指出在大气压下,适宜利用惰性气体放电来产生等离子体。而目前许多文献中所报道的隐身等离子体的产生方法离工程应用还有一定距离,还有许多问题亟待解决。