ID 原文 译文
48816 面向服务的建模与仿真技术为问题的解决提供了有效的途径,并已逐渐成为系统仿真研究领域的热点。 Service oriented modeling and simulation technology provides an efficient way to resolve this problem, and has gradually become a research hotspot in the field of system simulation.
48817 结合上述背景,对高层体系结构(high level architecture,HLA)面向服务体系架构(service oriented architecture,SOA)、离散事件描述规范(discrete events systems specification,DEVS)/SOA、模型驱动架构(model driven architecture,MDA)/SOA、云仿真/SOA等主流面向服务的建模与仿真技术进行了系统的论述,针对SOA存在的时效性等问题,分析了实时SOA的研究进展情况,并指出基于实时SOA的建模与仿真技术是一个值得关注的研究方向。 Combining with the above background, the high level architecture (high level architecture, the HLA) service oriented architecture (service oriented architecture, SOA), discrete event description specification (discrete 'events systems specification, DEVS)/SOA, model driven architecture (model driven architecture, MDA) / / SOA mainstream SOA, cloud service oriented modeling and simulation technology to carry on the system, this paper based on the timeliness of SOA and analyzes the real-time research progress of SOA, and points out that the modeling and simulation technology based on real-time SOA is a notable research direction.
48818 针对常规容积卡尔曼滤波(cubature Kalman filter,CKF)算法在捷联惯导系统(strapdown inertialnavigation system,SINS)大方位失准角初始对准中采样点个数与状态向量维数成正比、计算量较大的问题,提出了降维CKF算法。 For regular volume Kalman filter (cubature Kalman filter, CKF) algorithm in the strapdown inertial navigation system (strapdown inertialnavigation system, SINS) large azimuth misalignment Angle the number of sampling points in initial alignment is proportional to the state vector dimension, the problem of large amount of calculation, CKF to dimension reduction algorithm is proposed.
48819 与常规CKF算法相比,该算法只对离散化后的SINS非线性误差模型中的大方位失准角进行采样,再利用三阶球面-相径容积规则计算后验均值和协方差,从而将采样向量从10维降低到1维,采样点数量从20个下降到2个,减小了计算量。 Compared with conventional CKF algorithm, the algorithm only after discretization of the nonlinear error model of SINS large azimuth misalignment Angle sampling, reuse of third-order spherical diameter - phase volume rules to compute the posterior mean and covariance, which would reduce sampling vector from 10 d to 1 d, number of sampling points) reduced to 2 from 20, reduced the amount of calculation.
48820 仿真实验结果表明,该算法与常规CKF算法具有相同的对准精度,计算时间仅为常规CKF算法的1/3,是一种较为实用的方法。 Simulation results show that the proposed algorithm and conventional CKF algorithm with the same alignment accuracy and computation time is only 1/3 of the conventional CKF algorithm, is a more practical method.
48821 目前对动基座对准问题的解决方案大都基于惯性系,但这些方案需要存储导航期间惯性系矢量信息,且对准结束时定位精度不高。 Currently on moving base alignment problem solutions based on inertial system mostly, but these solutions need to be stored during the navigation of inertial system vector information, and aim at the end of the positioning accuracy is not high.
48822 提出一种新的车载动基座快速最优姿态矩阵(fast optimal attitude matrix,FOAM)对准算法,有效提高了车辆动基座定向精度,并能够保证在对准结束时有一定的定位精度以保证后续直接进入组合导航。 Put forward a new vehicle moving base fast optimal attitude matrix (fast optimal attitude matrix, terms) algorithm, improves the vehicle dynamic base orientation precision effectively, and at the end of the alignment can guarantee a certain location accuracy to ensure follow-up directly into integrated navigation.
48823 最后,车载试验验证了车载FOAM对准算法的有效性。 Finally, the on-board test verified the on-board terms on the effectiveness of the algorithm.
48824 分析了已有的超综合孔径分辨率表达式的不足之处,提出了更准确的空间分辨率表达式。 Analyses the existing synthetic aperture resolution expression of deficiency, puts forward the expressions more accurate spatial resolution.
48825 首先将最小冗余线性阵列应用于超综合孔径天线系统,增加了超综合孔径天线系统的小基线部分,在空间频率覆盖方面表现为扩大了系统对低频部分的覆盖,从而达到抑制旁瓣,改善成像效果的目的。 First will be minimum redundancy linear array used in synthetic aperture antenna system, increase the ultra small baseline part of synthetic aperture antenna system, in terms of spatial frequency coverage for expanding the system's coverage, the low frequency part to suppress the sidelobe, improving the imaging effect.