ID 原文 译文
55467 由仿真结果可知,和同类算法相比,本文方法的故障恢复率、恢复路径跳数惩罚、服务节点平均节点度和时间复杂度综合权衡较好,并保证了所构建的覆盖网的自愈性。 The simulation results shows that compared with similar algorithms, the method of fault recovery rate, restore the path hop punishment, service node average node degree and time complexity integrated balance is better, and to ensure the constructed network self-healing.
55468 为了提高分布式阵列在低信噪比(signal-to-noise ratio,SNR)条件下的波达方向(direction-of-arrival,DOA)估计性能,同时放宽阵列物理孔径扩展程度的限制,提出了一种基于旋转不变子空间(estimation of signal parameters via rotational invariance techniques,ESPRIT)的多基线分布式阵列DOA估计方法。 In order to improve the distributed array in low SNR (signal - to - noise thewire, SNR) under the condition of DOA (direction - of - concatenated, DOA estimation performance, loosen the restriction degree of physical aperture array extension at the same time, this paper proposes a rotation invariant subspace based (estimation of signal parameters via rotational invariance techniques, ESPRIT) multiple baseline distributed array DOA estimation method.
55469 该方法通过优化分布式阵列结构,在子阵间使用多基线结构布阵,结合ESPRIT算法和多步解模糊方法得到多基线分布式阵列的高精度无模糊DOA估计。 By optimizing the structure of the distributed array, the method using multiple baseline between the submatrix structure disposal, combined with ESPRIT algorithm and multi-step fuzzy method to get more high precision of the baseline distributed array without fuzzy DOA estimation.
55470 此外,利用最大后验概率准则近似法分析分布式阵列DOA估计的门限效应,给出了SNR门限和基线长度门限的近似计算方法。 In addition, the maximum a posteriori probability criterion approximation method is used to analysis the distributed array DOA estimation of the threshold effect, the SNR threshold is given and the approximate calculation method of baseline length threshold.
55471 计算机仿真结果验证了所提方法的有效性。 The computer simulation results demonstrate the effectiveness of the proposed method.
55472 地月平动点附近存在的大量拟周期轨道是一类用途广泛的轨道,其设计方法一直是研究的热点。 Near ground on translation of a large number of the orbit of quasi periodic orbit is a kind of widely used, its design method has been a research hot spot.
55473 为了克服使用圆形限制性三体模型设计任务轨道时缺乏摄动分析的不足,提出了改进的基于高精度星历模型和多步打靶法的设计方法。 In order to overcome model using circular restricted three body lack design task orbital perturbation analysis in, put forward the improved model based on precise ephemeris and design method of multi-step shooting method.
55474 具体地,根据地月平动点拟周期轨道在瞬时平动点旋转坐标系中的特征,基于瞬时平动点的运动规律,结合多步打靶法,推导出了三维空间拟周期轨道拼接点的求解方法。 Specifically, base on translational point quasi periodic orbit in instantaneous translational point features in the rotation coordinate system, based on the motion law of the instantaneous translational points, combined with the multistep shooting method, deduced the three-dimensional method of calculating the quasi periodic orbit splicing point.
55475 仿真分析表明,所提的设计方法可以有效地设计出地月平动点拟周期轨道。 Simulation analysis show that the proposed design method can be effectively designed quasi periodic translational point to the moon orbit.
55476 传统的接收机捕获方法仅针对单颗卫星码相位及载波频率进行搜索与捕获,为了提高接收机傅里叶变换及相关运算模块的使用效率,提出了一种面向北斗B1频点信号的多星联合捕获算法,并在此基础上建立了联合捕获相位参量与相应卫星编号间的映射关系。 Traditional receiver capture method only for single satellite code phase and carrier frequency for search and seizure, in order to improve the receiver Fourier transform and efficiency of the use of the related calculation module, this paper proposes a face of beidou B1 frequency signal of multiple star alliance capture algorithm, based on the established joint capture phase parameter with the corresponding satellite mapping relationship between the Numbers.