ID 原文 译文
9914 首先,利用全局最小熵方法完成包络对齐; ‭First of all, to complete the envelope alignment with global minimum entropy method;
9915 其次将初相校正问题转换为径向速度与加速度的参数估计问题。 Second convert initial phase correction problem to the radial velocity and acceleration of the parameter estimation problem.
9916 为实现速度的高精度估计,采取粗搜索与精估计相结合,以全局最小熵作为代价函数,基于黄金分割法进行变步长搜索实现参数的快速高精度估计,最终完成初相校正。 ‭In order to achieve the high precision of speed estimation, adopts the coarse search and fine estimation, combining with global minimum entropy as the cost function, based on the golden section method to realize the rapid and high accuracy parameter estimation variable step search, finally completed in the early phase correction. ‭
9917 理论分析和仿真结果表明该算法具有参数估计速度快、估计精度高且在较低的信噪比条件下具有较高稳健性的优势。 Theoretical analysis and simulation results show that the algorithm with parameter estimation speed, high estimation precision under the condition of low SNR and has high robustness.
9918 针对空间三轴稳定目标成像问题,提出了一种基于二体模型的双基地逆合成孔径雷达(bistatic inverse synthetic aperture radar,ISAR)回波模拟方法。 According to space triaxial stability target imaging problem, this paper proposes a model based on two body of bistatic inverse synthetic aperture radar (bistatic inverse synthetic aperture radar, ISAR) echo simulation.
9919 该方法利用二体运动模型模拟空间目标的在轨运动,考虑了目标平稳运动及三轴姿稳转动引起的散射点相对雷达视角变化,并加入目标的高速运动特性,生成了双基地逆合成孔径雷达的基带回波数据,并给出了双站雷达对目标可视区域的判定方法。 The method USES two body motion model simulation of the space target in-orbit movement, considering the goal smooth movement and posture stability three axis rotation changes caused by the scattering point relative to the radar Angle, and add high speed movement characteristics of the target, generated the bistatic inverse synthetic aperture radar baseband echo data, and presents a pair of the radar target determination methods of viewing area.
9920 最后,进行了仿真实验,仿真结果表明,二体模型与实际目标的运动轨道误差很小,同时,成像结果能够很好的反映目标的姿态变化特性。 Finally, the simulation results, the simulation results show that the movement of two body model and the actual target orbit error is very small, at the same time, the imaging results can well reflect the target attitude change characteristics.
9921 该回波模拟方法有利于空间目标的精确成像,并对成像试验的实施具有重要的指导意义。 It is helpful for accurate imaging of space target echo simulation method, and the imaging test implementation has important guiding significance.
9922 针对高超声速飞行器投放任务要求,开展了固体火箭助推段终端多约束能量管理制导研究。 For hypersonic aircraft launch mission requirements, carried out the solid rocket booster constraint energy management terminal guidance research.
9923 根据三级固体火箭第三级飞行特点,提出一种基于纵向、侧向联合设计制导方法。 ‭According to the third grade level 3 solid rocket flight characteristics, the paper puts forward a guidance method based on the longitudinal and lateral joint design.