ID 原文 译文
54267 针对未知环境模型下的多帧距离门拖引干扰的策略优化问题，提出一种基于改进粒子群算法的拖引干扰策略优化方案。 The optimal strategy problem of multi-frame range gate pull-off(RGPO) jamming with unknown environment model was studied. We used improved Particle Swarm Optimization(IPSO) to solve the problem.
54268 首先，以平均波门偏移距离作为干扰效果的性能评价指标，建立了距离门拖引干扰的多帧联合优化模型。 First, we used the difference between the center of the range gate and the true target position as the evaluation index of the jamming effect, and constructed a multi-frame joint optimization model of RGPO jamming.
54269 然后，为了解决目标函数解析表达式难以获取的难点，提出了一种结合奖励机制的蒙特卡洛目标函数拟合方法; Then, in order to solve the difficulty of obtaining objective function analytical expressions, a fitting method of Monte Carlo objective function combined with reward mechanism was proposed.
54270 在此基础上，面向优化维度过高的难点，提出了基于粒子群算法的策略优化方法; On this basis, a strategy optimization method based on particle swarm optimization algorithm was proposed for the difficulty of high optimization dimension.
54271 最后，数值仿真结果证明了算法的有效性。 Finally, numerical results were provided to verify the validity of the proposed algorithm.
54272 对流风暴的新生和发展演变与三维风场存在密切联系， The birth and development of convective storms were closely related to the three-dimensional(3 D) wind field.
54273 多普勒天气雷达可利用多普勒效应测量径向速度，可及时地反映风场信息。 The Doppler weather radar could use the Doppler effect to measure the radial velocity and reflect the wind field information in time.
54274 基于线性风场假设和全方位均匀采样的速度方位显示(VAD)技术是目前应用最广泛的使用单部多普勒雷达反演风场的方法， The velocity azimuth display(VAD) technology based on linear wind field assumptions and omni-directional uniform sampling was the most widely used method to retrieve three-dimensional wind fields for single Doppler radar.
54275 然而对于台风、龙卷等强对流天气系统，其内部风场空间分布复杂，线性风场假设不成立，以及由于机动平台非理想运动无法保证等方位间隔的均匀采样，导致反演精度不高。 However, for strong convective weather systems such as typhoons and tornadoes, the spatial distribution of the internal wind field was complicated so that the assumption of linear wind field was not valid and the uniform sampling at equal azimuth intervals cannot be guaranteed due to the nonideal motion of the mobile platform, which resulted in low retrieval accuracy.
54276 本文提出了一种基于修正VAD技术的非线性风场反演方法， This paper proposed a three-dimensional wind field inversion method based on the non-uniform sampling modified VAD technology.