ID 原文 译文
48546 针对高超声速飞行器在飞行过程中总体、控制、气动、结构、动力、载荷、防热与热环境、飞行器运动学与动力学等多学科、多物理场强耦合特性,提出了高超声速飞行器高性能多物理场耦合虚拟飞行试验平台体系结构,建立了高超声速飞行器多物理场耦合虚拟仿真试验模型,开发了基于高性能异构计算系统的多学科综合虚拟飞行试验系统,为实现高超声速飞行器的总体设计提供了可靠、实用的验证途径。 For hypersonic flight vehicle overall, in the process of flight control, pneumatic, structure, power, load, heat and thermal environment, and kinematics and dynamics of multiple disciplines, such as multiple physical field coupling characteristics, puts forward the hypersonic aircraft flying high performance more than physical field coupling virtual test platform architecture, established the hypersonic aircraft more physical field coupling virtual simulation test model, developed based on the high performance of heterogeneous computing systems multi-disciplinary integrated virtual flight test system, to achieve the overall design of the hypersonic aircraft provides reliable, practical validation of the approach.
48547 圆迹环扫合成孔径雷达(circular trace scanning synthetic aperture radar,CTSSAR)是一种新型合成孔径雷达(synthetic aperture radar,SAR)成像模式,受其圆弧飞行轨迹的影响,直线运动轨迹模型下的成像算法不再适用。 Sweep round trace their synthetic aperture radar (circular trace scanning synthetic aperture radar, CTSSAR) is a new type of synthetic aperture radar (synthetic aperture radar, SAR) imaging model, under the influence of its circular trajectory, linear motion trajectory model of imaging algorithm no longer apply.
48548 针对这一问题,提出了一种新的CTSSAR成像方法。 In order to solve this problem, this paper proposes a new CTSSAR imaging method.
48549 该方法首先在误差允许的范围内对其圆弧运动轨迹下的斜距方程作四阶近似,再求解方程得到驻相点的精确解析解,获得信号的二维频谱,并以此推导了相应的成像算法,补偿了不同距离处的目标的相位,实现高分辨率成像。 This method in the first place in the range of allowable error of its circular trajectory under oblique distance equation for fourth order approximation, and accurate analytical solutions of solving the equation in phase, the received signal of the two dimensional spectrum, and the corresponding imaging algorithm is deduced, compensate the phase of the different distance of target, realize high resolution imaging.
48550 在整个的推导过程中只做了一次合理的高阶近似,因此获得的二维频谱具有较高的精度。 In the derivation process of the whole only made a reasonable higher-order approximation, thus obtain two-dimensional spectrum has higher precision.
48551 同时对于实际中可能遇到的运动误差问题,给出了一种解决思路。 At the same time for movement error may occur in the actual problem, a solution is given.
48552 最后,点目标的仿真对比结果验证了成像算法的有效性与运动补偿方案的可行性。 Finally, point target simulation results validate the effectiveness of the imaging algorithm and the feasibility of the motion compensation scheme.
48553 极化信息的获取和利用对提高雷达目标的检测、分类识别和抗干扰性能具有重要作用,在气象观测、对地遥感侦察和防空反导等领域得到了高度重视和广泛应用。 Obtain and make use of to improve the polarization information of radar target detection, classification recognition and plays an important role in the anti-jamming performance in meteorological observation, to areas such as remote sensing detection and air defense anti-missile attaches great importance to and widely used.
48554 极化测量是极化信息获取和处理的基础,在雷达极化技术发展过程中出现了多种测量体制。 Polarization measurement is the base of the polarization information acquisition and processing in radar polarization technology appeared in the process of development of a variety of measurement system.
48555 从极化雷达的发展历程和趋势的角度,对极化测量体制进行了梳理,阐述了典型极化测量雷达体制的概念和内涵,比较分析了各测量体制间的差异和优缺点,并指出了其主要应用领域,这为极化雷达体制选择与优化设计提供有益参考。 From the Angle of the development and trend of polarization radar, generalizes the polarization measurement system, this paper expounds the concept and connotation of typical polarization measurement radar system, the comparative analysis of the differences between the measurement system and its advantages and disadvantages, and points out its main application field, the selection and optimization design for polarization radar system provides the beneficial reference.