ID 原文 译文
7664 另外,该方法采用基于快速傅里叶变换的成像结构显著提高了成像效率。 In addition, the method based on fast Fourier transform imaging structure significantly improves the imaging efficiency.
7665 理论分析和实验结果表明,与后向投影算法相比,该方法能够获得相同成像结果的同时大大降低运算量。 After theoretical analysis and experimental results show that with compared to the projection algorithm, this method can obtain the same imaging results at the same time greatly reduce computational complexity.
7666 基于导弹和目标相对运动方程,设计了视线角约束自适应滑模中制导律。 Based on relative motion equation of missile and the target designed the line of sight Angle constraint adaptive sliding mode guidance law.
7667 应用Lyapunov稳定性理论证明了该制导律能使制导系统在有限时间内收敛至滑动模态面; Lyapunov stability theory are applied to prove the guidance law can make the guidance system in finite time convergence to the sliding mode surface;
7668 当制导系统进入滑动模态面后,基于积分理论证明了中末制导交班时刻视线角能够收敛至期望值且视线角速率可以收敛至零附近。 When the guidance system into sliding mode surface, based on the integral theory proves that the terminal guidance time succession Angle of sight can converge to the expected value and the line of sight angular rate can be convergent to near zero.
7669 进一步将该制导律扩展到三维空间的拦截问题。 Further to expand the guidance law to three-dimensional space interception problem.
7670 最后,针对拦截正弦机动目标进行了仿真。 Finally, the simulation is conducted for intercepting sinusoidal maneuvering target.
7671 结果表明:设计的制导律鲁棒性强,引起的交班误差小。 The results show that the designed guidance law is robust, small hands the error caused by the.
7672 针对固定时间下的两航天器三维空间追逃问题,采用协同进化算法将复杂的双边最优规划问题简化成对追逃过程中纳什均衡点的搜索,进而得出追逃双方的最优对抗策略及解算方法。 For the two spacecraft three-dimensional space of the fixed time pursuit problem, using collaborative evolutionary algorithm to simplify the complex bilateral optimal planning problem in pairs pursuit of Nash equilibrium in the process of search, pursuit of both sides are obtained the optimal strategy and calculating methods.
7673 考虑在保证算法计算精度的前提下缩短计算时间,将对策模型进行简化处理,以航天器推力指向角为控制量对协同进化算法进行编码设计,利用B样条基函数对编码进行逼近拟合。 Consideration on the premise of guarantee calculation precision shorten the calculation time, the game model to simplify the process, with the spacecraft thrust pointing Angle as the amount of coding cooperative coevolution algorithm design, code to make use of the b-spline basis function approximation fitting.