ID 原文 译文
21715 针对接入与回传一体化小基站场景下用户个性化视频流业务需求问题，该文提出一种基于接入与回传一体化小基站的用户满意度最大化算法。 To meet the personal quality requirement of video streaming service under the access and backhaul integrated small base station scene, a user satisfaction maximization algorithm is proposed.
21716 该算法首先根据系统实际可达速率和用户满意度需求速率间的不匹配程度，动态调整下一周期队列传输所需频谱资源，并建立用户质量满意度最大化模型，其次运用Lyapunov优化方法把初始问题转化为Lyapunov偏移加罚项的优化，将溢出概率约束转化为关于自变量的不等式，最后基于拉格朗日对偶分解的用户接入带宽分配算法和基于内点法的回传和接入带宽分配算法进行求解。 The algorithm adjusts dynamically the spectrum resources used for next-cycle queue transmission by analysis the mismatch degree between the actual system reachable rate and user satisfaction demand rate. The corresponding optimization model of the quality satisfaction of all users is established. Then, the Lyapunov stochastic optimization method is used to transform the initial problem into drift plus penalty, the overflow probability constraint is transformed into inequality of variables. Finally, using the proposed user access bandwidth allocation algorithm based on Lagrange dual decomposition and the backhaul and access bandwidth allocation algorithm based on interior point method.
21717 仿真结果表明，该算法提高了系统用户质量满意度，同时保证了系统稳定性。 The simulation results show that the algorithm can improve the quality satisfaction of all users and ensure the system stability.
21718 针对现有船速估计算法大多数只能估计出舰船距离向速度的问题，该文提出一种基于合成孔径雷达(SAR)图像局域中心频率的舰船方位向速度估计方法。 To deal with the problem that most of the existing ship speed estimation algorithms can only estimate the slant range speeds of ships, a ship azimuthal speed estimation method based on local region Doppler centroid for Synthetic Aperture Radar (SAR) images is proposed.
21719 首先分析了动目标在SAR图像局域多普勒中心频率的变化规律，并推导了利用中心频率变化率估计目标方位向速度的理论公式。 Firstly, the variation of Doppler centroid of moving target in local region of SAR image is analyzed and the theoretical formula for estimating the azimuthal speed using the slope of Doppler centroid variation is derived.
21720 然后给出了根据SAR图像局域方位向功率谱的概率密度函数，利用最大似然估计算法估计中心频率变化率的方法。 Then, based on the probability density function of azimuthal power spectrum, an estimation method for the slope of Doppler centroid variation using the maximum likelihood estimation algorithm is presented.
21721 同时，对所提方法的精度与适用性应用性进行分析。 Moreover, the estimation accuracy and the applicability of the proposed method are also analyzed.
21722 最后，通过仿真和实测数据，将该方法的估计结果与直接计算调频率获得的结果进行对比分析。 Finally, the proposed method is implemented on simulated and filed data and the estimation results are compared with those obtained by directly calculating the frequency modulation rate.
21723 结果表明，相对于调频率法，该方法具有更高的估计精度，验证了所提方法的有效性。 The results show that the proposed method has high estimation accuracy, which verifies the effectiveness of the proposed method.
21724 在无线传感器网络目标跟踪的过程中进行节点调度，可以综合考虑跟踪误差和能量消耗，延长传感器网络的使用寿命。 In the process of target tracking, the sensor scheduling algorithm can achieve the tradeoff between the tracking error and the energy consumption so as to extend the service life of the sensor network.