ID 原文 译文
48996 最后通过实例验证所提方法的有效性,实验结果表明该方法能够较好地实现敏捷卫星调度的时间约束的一致性检验和搜索求解。 Finally, examples demonstrate the effectiveness of the proposed method, the experimental results show that this method can well realize agile satellite scheduling time constraint consistency inspection and search for the solution.
48997 提出一种改进的均值偏移(mean shift,MS)目标跟踪算法,用于提高模板漂移和大面积遮挡情况下视觉目标跟踪算法的鲁棒性和准确性。 An improved mean shift (mean shift, MS) target tracking algorithm, used to improve the template drift and large block visual target tracking robustness and accuracy of the algorithm.
48998 首先判断目标是否存在遮挡现象,当遮挡未发生时,采用原始MS算法跟踪目标,利用选择性分量更新策略对目标模板进行更新,减少模板漂移的影响;当遮挡发生后,利用非对称核函数模型对候选目标模型进行矫正,降低遮挡像素点对MS矢量和目标跟踪稳定性的影响。 First to determine whether a target exists shelter phenomenon, when block did not occur, the original MS algorithm tracking target, using selective component update strategy of target template updating, reduce the influence of the template drift;When keep out after using asymmetric nuclear function model of candidate target model to correct, reduce the block pixels to MS vector and the influence of the stability of target tracking.
48999 实验结果表明,改进的跟踪算法对非刚性和大面积遮挡目标都能进行稳定的跟踪。 Experimental results show that the improved tracking algorithm for nonrigid and large area sheltered target can stable track.
49000 调制信号的抗多径和无模糊跟踪是现代全球导航卫星系统接收机码环设计中需要解决的两个重要问题。 Modulation signal of anti-multipath and fuzzy tracking is free in the modern global navigation satellite system receiver code loop design of the two important problems need to be solved.
49001 提出了一种基于优化算法的码鉴相器设计方法,该方法使用多相关器结构,以组合权值为优化变量,根据无模糊跟踪要求给出了约束条件。 Put forward a kind of code phase discriminator based on optimization algorithm, the design method, the method using multiple correlator structure, combination weights as optimization variables, no fuzzy tracking requirements according to the constraint conditions are given.
49002 以多径包络面积为目标函数建立了非线性最优化问题,提出了一种基于曲线赋形技术的优化初值设置方法。 With multipath envelope area as the objective function to establish the nonlinear optimization problem, puts forward a method based on curve with vehicle technology to optimize the initial value setting.
49003 仿真结果表明,与传统的鉴相器相比,所设计的鉴相器具有更好的抗多径性能,且能实现对二进制偏移载波调制信号的无模糊跟踪。 The simulation results show that compared with traditional phase discriminator, the design phase of the instruments has a better anti-multipath performance, and can realize the binary offset carrier modulation signal without fuzzy tracking.
49004 在分析粒子群优化(particle swarm optimization,PSO)的基础上,提出了一种基于自适应t分布变异的简化粒子群特征选择方法。 Based on the analysis of particle swarm optimization (particle swarm optimization, PSO) on the basis of the t distribution is put forward based on the adaptive mutation simplified particle swarm of feature selection methods.
49005 针对PSO容易陷入局部收敛的缺陷,通过对群体极值进行自适应t分布变异,使其跳出局部收敛。 In view of the PSO easy to fall into local convergence defects, through the study of the adaptive t distribution variation of group extremum, make them jump out of local convergence.