ID 原文 译文
49867 文章基于系统论的思想，把复杂装备的研制过程看作是由一系列标志性事件组成的整体系统，定义了复杂装备研制项目的图示评审技术(graphic evaluation and review technique，GERT)网络模型，讨论了复杂装备研制项目完成时间的GERT网络"反问题"求解思路。 Based on the thought of system theory, the development process of complex equipment is considered an integral system consists of a series of landmark, defines the complex equipment development project of graphic review techniques (graphic evaluation and review technique, GERT) network model, discusses the complex equipment development project completion time of GERT network "inverse problem-solving thinking.
49868 以某飞机研制项目为例，对其期望完成时间进行了规划。 "With a plane development project as an example, the expected completion time for the planning.
49869 针对系统动力学模型不准确可能导致滤波精度下降，以及系统状态协方差阵可能出现的负定性问题，提出一种新的高斯过程回归平方根分解无迹粒子滤波(Gaussian process regression square-root decomposition unscented particle filter，GPSR-UPF)算法。 In view of the system dynamics model inaccuracy may led to the decrease of the filtering precision, as well as the system state covariance matrix of possible negative qualitative problems, put forward a new Gaussian process regression square root decomposition no trace particle filter (Gaussian process regression square root decomposition - unscented particle filter, GPSR - UPF) algorithm.
49870 在该算法中，采用高斯过程回归求取UPF的重要性密度函数。 In the algorithm, using gaussian process regression to calculate the importance density function of UPF.
49871 当系统模型不准确时，通过高斯过程回归学习训练数据，进而获取系统的回归模型及系统噪声协方差，同时引入平方根变换抑制系统状态协方差阵的负定性。 When the system model is inaccurate, learn by gaussian process regression training data, and then get the regression model of system and the system noise covariance, at the same time square root transformation is introduced to suppress negative qualitative state covariance matrix.
49872 将提出的GPSR-UPF算法应用到捷联惯导/全球定位系统(strapdown inertial navigation system/global positioning system，SINS/GPS)组合导航系统中进行仿真验证。 Will GPSR - UPF algorithm is applied in the strapdown inertial navigation/global positioning system (strapdown inertial navigation system/global positioning system, SINS/GPS) integrated navigation system in the simulation test and verify.
49873 结果表明，所提出滤波算法的性能优于基本的无迹粒子滤波算法，能提高组合导航系统的解算精度。 Results show that the performance of the proposed filter algorithm is superior to the basic no trace of the particle filter algorithm and can improve the calculating precision of integrated navigation system.
49874 研究了基于随机信标的水下同时制图定位(simultaneous localization and mapping，SLAM)导航定位方法。 Is studied based on random beacon and mapping underwater positioning (simultaneous localization and mapping, SLAM) navigation and positioning method.
49875 信标导航是目前导航领域的研究热点，但往往需要提前对信标位置进行标定。 Beacon navigation is the hotspot research in the field of navigation, but often need to calibration beacon location in advance.
49876 对此文中提出一种无需位置标定的随机信标导航方法，即在信标随机散布的情况下，通过量测信标和航行器间的距离和方位， This paper puts forward a random without position calibration beacon navigation method, namely under the condition of the beacon random distribution, through the measurement range and the distance between aircraft and orientation,