ID | 原文 | 译文 |
7774 | 用非线性系统局部弱可观理论分析了系统可观的条件,然后在此基础上设计了扩展卡尔曼滤波器。 | With considerable local weak nonlinear system theory to analyze the system a good condition, and then on the basis of the extended kalman filter is designed. |
7775 | 以滤波结果为初值,用四阶龙格库塔方法基于比例导引律的模型对导弹未来的位置进行了预报。 | To filter results as the initial value, with a fourth order runge kutta method based on the proportional guidance law model to forecast the location of the missile in the future. |
7776 | 仿真结果表明,在视线角速率较大的情况下滤波器可以取得较好的效果,弹道预报可以满足一定的精度和速度要求。 | The simulation results show that under the condition of the line of sight angular rate is larger filter can obtain good effect, ballistic forecast can satisfy the precision and speed of a certain requirements. |
7777 | 滤波过程中若噪声的统计特性发生时变,则会引起传统无迹卡尔曼滤波(unscented Kalman filter,UKF)的滤波精度快速降低、滤波收敛性不定甚至发散,针对这个问题提出了具有鲁棒性的UKF算法。 | If in the process of filtering noise statistical characteristics of time-varying, will cause no trace traditional Kalman filter (unscented Kalman filter, UKF) decreasing filtering precision, filter convergence and divergence, even to this problem has the robustness of the UKF algorithm is proposed. |
7778 | 首先根据极大后验估计(maximum a posterior estimate,MAPE)原理,推导出无偏的近似最优MAPE常值噪声统计特性的滤波估计公式,并给出了时变噪声统计估计器相关参数的一整套递推公式。 | First of all, according to the maximum a posteriori estimation (maximum a posterior estimate, MAPE) principle, deduce the approximate optimal MAPE of unbiased constant noise filter estimate formula of statistical properties, and gives the time-varying noise statistical estimator is a set of recursion formula of related parameters. |
7779 | 考虑到观测数据粗差的存在,将可以在线估计时变噪声特性的方法和具有鲁棒特性的滤波因子相结合,以有效抑制观测数据的粗差值对滤波稳定性和收敛性的影响。 | Considering the observation data of gross error exists, will be able to online estimation method of time-varying noise characteristic and filtering factor combined with robust characteristics, in order to effectively restrain the observation data of gross error value impact on the stability and convergence of the filter. |
7780 | 最后,以地面站对空间非合作目标的光学测角跟踪为应用背景的仿真实例表明,该算法在噪声统计特性未知或不准确且过程噪声矩阵时变、观测数据存在个别粗差情况下,滤波依然收敛,其滤波精度及稳定性提高较为明显。 | Ground station is discussed, the non-cooperative targets for space optical measuring Angle tracking for the application background of simulation examples show that the algorithm in unknown noise statistics feature or inaccurate and time-varying process noise matrix, the presence of individual gross error observation data, the filter convergence, still was evidently improve the filtering accuracy and stability. |
7781 | 针对不确定条件下的群体研讨决策问题,提出了一种基于证据理论的辩论模型。 | In view of the uncertainty under the condition of group decision making problems, this paper proposes a model based on evidence theory debate. |
7782 | 首先构建了辩论系统的框架,论据的内部结构由前提和结论组成,论据之间不仅存在攻击和支援关系,还允许对这种攻击和支援关系进行支持或反对。 | First constructs the system framework of the debate, the internal structure of the argument is composed of premise and conclusion, argument exists not only between attack and support relationship, also allows to support or oppose this attack and support relationship. |
7783 | 然后引入证据理论描述论据的不确定性,应用证据映射方法对辩论过程进行不确定性推理,实现对论据信度的数值计算。 | Arguments then introduces evidence theory to describe the uncertainty of evidence mapping method is applied to uncertainty reasoning process of the debate, the reliability of numerical calculation for argument. |