ID 原文 译文
48106 鉴于Gardner算法在定时同步环路中的广泛应用及其对限带信号的局限性, Given the widespread application of Gardner algorithm in the timing synchronization loop and its limitations on band-limited signal,
48107 在异步采样同步思想的基础上,通过对Gardner算法及其修正算法在式样抖动及定时误差方面的比较,提出了一种增强的Gardner定时误差检测算法(E-Gardner)。 on the basis of the asynchronous sampling synchronization thought, based on Gardner algorithm and its modified algorithm in pattern jitter and timing error comparison, proposed an enhanced Gardner timing error detection algorithm (E - Gardner).
48108 该算法结构简单,且能有效地减小定时误差偏差和系统自噪声。 The algorithm has a simple structure and can effectively reduce the timing error deviation and noise of the systems.
48109 仿真结果表明,在Suzuki移动卫星信道环境下,E-Gardner算法在小滚降系数情况下对正交相移键控(quadrature phase shift keying,QPSK)调制信号的时钟捕获及误差检测的性能有明显的改善。 The simulation results show that the Suzuki mobile satellite channel environment, E - Gardner algorithm under the condition of small rolling pressure coefficient for each shift keying (quadrature phase shift keying, QPSK) the clock modulation signal capture and error detection performance is improved.
48110 卫星的自主轨道确定是卫星自主生存的必要条件。 Satellite autonomous satellite autonomous orbit is a necessary condition for survival.
48111 采用星载常用敏感器对自然天体进行观测,并对观测量进行适当转换, Commonly used by spaceborne sensors on natural objects, and the proper conversion,
48112 得出观测方程为线性化方程,计算量明显减小且具有更直观的物理意义; observation observation equation is linearized equation, significantly reduce the amount of calculation and has more intuitive physical meaning;
48113 利用星光折射时星光矢量所处特殊位置计算地心距,增加观测方程信息量; Using the special position of starlight refraction when starlight vector calculated from the center of the earth, increase the observation equations of information;
48114 二体轨道动力学模型的一阶递推近似引入系统模型误差是影响滤波器性能的关键因素之一,应用一阶导数函数值的线性组合替代高阶导数的函数值可以使微分方程的线性化误差大为降低。 Two body orbit dynamic model of a first order recursive approximation is introduced into the system model error is one of the key factors that affect the filter performance and application of a linear combination of the first derivative function values instead of higher derivative function values can make differential equation of the linearization error is greatly reduced.
48115 在滤波器的设计过程中,应用此方法对状态方程进行处理,极大提高了滤波器状态方程的递推精度。 In the design of filter process, the application of this method to deal with state equation, the equation of state of the filter greatly improve the precision of recursive.