ID 原文 译文
54237 首先,对传统的回波信号模型引入互耦矩阵,建立了互耦条件下回波信号模型; Firstly, the mutual coupling matrix is introduced to the traditional echo signal model, and the echo signal model under the mutual coupling condition is established.
54238 然后,给出了三阶嵌套阵的布阵方式,并推导了“差联合阵列”结构下物理阵元的最佳配置和自由度的闭合表达式; Secondly, the layout of the three-level nested array is given, and the optimal configuration and the closed-form expression of the degree of freedom of the physical array elements under the structure of “difference co-array” are derived.
54239 最后,结合压缩感知技术进行波达方向估计。 Finally, compressed sensing(CS) technology is used for direction of arrival(DOA)estimation.
54240 仿真实验表明,与现有嵌套阵相比,所提三阶嵌套阵在不增加物理阵元数目的条件下可以有效提升自由度,降低阵元互耦,从而提升角度估计性能。 Simulation results show that compared with the existing nested arrays, the proposed three-level nested array can effectively improve the degree of freedom and reduce the mutual coupling without increasing the number of physical sensors, thus improving the performance of DOA estimation.
54241 交通目标智能检测是车辆盲区智能防撞系统中的基础技术, Intelligent detection of traffic targets is the basic technology in the intelligent collision avoidance system for vehicle blind spots.
54242 该技术的研究和应用对降低交通事故损失具有重要意义。 The research and application of this technology is of great significance to reduce the loss of traffic accidents.
54243 本文面向车辆盲区防撞系统设计的交通目标智能检测,其在基础模型中融合了两个性能提升策略。 In this paper, a detection model for vehicle blind zone collision avoidance system design, which combines two performance improvement strategies in the basic model.
54244 将该模型应用于国内和国外道路场景检测数据集,以验证模型在所有范围和近距离目标的检测性能。 The model is applied to domestic and foreign road scene detection data sets to verify the detection performance of the model in all ranges and short-range targets.
54245 实验结果表明该模型可以对近距目标表现出较高的检测精度,且具有较高的检测速度, Experimental results show that the model can show high detection accuracy for close targets and has a high detection speed.
54246 因此该模型可适用于车辆低速启动或者转弯时智能盲区防撞系统对交通目标的检测需求。 Therefore, the model can be applied to the detection requirements of the intelligent blind zone collision avoidance system for traffic targets when the vehicle starts at low speed or when turning.