ID 原文 译文
14245 首先,设定发射与接收阵元的阵列孔径以及最小间距,然后用蚁狮算法对阵元位置进行稀疏优化,计算适应度函数并与全局最优解对比,保存最优值,使峰值旁瓣电平最小,最后以有效阵元数和峰值旁瓣为多目标优化函数,通过归一化处理将其转化为单目标优化。 First, the aperture of the transmitting elements and the receiving elements as well as the minimum distance between them are defined. Then, the ant lion algorithm is used to optimize the position of the elements, the fitness function is calculated and compared with the global optimal solution to obtain and save the optimal value, so as to minimize the peak sidelobe level. The number of effective elements and peak sidelobe are taken as multi-objective optimization functions, which are then transformed into single objective optimization by normalization.
14246 仿真结果表明,所提算法相比现有算法对旁瓣的优化效果更好且不易陷入早熟现象,也可以较好地实现多目标联合优化,提高雷达的工作性能和自由度。 The results of simulation show that, compared with the existing algorithms, the proposed algorithm has better sidelobe optimization effects and is not prone to fall into precocity. It can also realize multi-objective joint optimization and improve the performance and degree-of-freedom of the radar.
14247 针对目前机载辅助导航应用的激光雷达点云地形分割方法对不同地形自适应性差和实时性不高的问题,结合CSF算法和移动曲面拟合思想,提出了一种新的点云地形自适应分割方法。 In the field of auxiliary airborne navigation, the current Lidar-based point-cloud terrain segmentation method has low real-time performance and poor adaptability to different terrains.
14248 该方法通过格网划分和地形识别计算布料硬度值,使点云自适应分割; To solve the problem, this paper proposes an adaptive point-cloud terrain segmentation method, which combines the CSF algorithm with the fitting of moving surfaces.
14249 并利用分割过程中产生的布料模型生成用于头盔显示器显示的网格化地形。 This method calculates the hardness value of the cloth through the gridding and recognition of terrains to adaptively segment the point clouds, and then uses the cloth model established in the segmentation process to generate terrain grids for helmet-mounted display.
14250 实验表明,与ISPRS公布的经典分割算法相比,该方法在一定准确率的基础上,具有地形自适应性强、实时性较高的优势,对激光雷达在辅助直升机导航方面的应用具有一定参考价值。 Experimental results show that, compared with the classic terrain segmentation methods released by ISPRS, this method has the advantages of strong adaptability to different terrains and high real-time performance on the basis of ensuring certain accuracy, which has certain value in the application of the Lidar to auxiliary helicopter navigation.
14251 研究了非线性网络控制系统存在时变时滞、丢包、传感器扇区非线性时的故障检测问题。 This paper focuses on fault detection when there is time-varying delay, packet loss, and nonlinear sensor sectors in nonlinear network control systems.
14252 针对时间触发周期采样带来的网络资源浪费问题,提出了一种满足给定触发条件来判断采样数据是否需要传输的事件触发机制。 In order to solve the problem of network resource waste caused by time-triggered periodic sampling, an event-triggered mechanism is proposed, in which the sampled data needs to be transmitted only when a certain triggering condition is satisfied.
14253 根据Lyapunov稳定性理论和线性矩阵不等式将故障检测问题转换成求解H∞凸优化问题。 Based on Lyapunov stability theory and Linear Matrix Inequality( LMI), the fault detection problem is transformed into an H. convex optimization problem.
14254 最后,以电机伺服控制系统为例,通过Matlab仿真,进一步验证了设计的可靠性与实用性。 Finally. simulation of the motor servo control system is conducted through Matlab, and the validity and practicability of the design are proved.