ID |
原文 |
译文 |
49787 |
实验仿真结果表明,与基于RTI的单重构定位算法相比,所提双重构算法能达到较好的定位精度,且实时性更高。 |
The experimental simulation results show that compared with single refactoring localization algorithm based on RTI, the proposed double reconstruction algorithm can achieve good location accuracy, and higher real-time performance. |
49788 |
将一幅图像按照一个目标的大小进行缩放,然后计算其梯度特征,再对梯度特征进行标准化,二值化能够极大地提高目标候选区域的选择和检测计算效率,减少耗时。 |
Will an image according to the size of a target to zoom in, and then calculate the gradient features, to standardize the characteristic of gradient, binarization can greatly improve the efficiency of target selection and testing calculation of the candidate region and less time-consuming. |
49789 |
由于对海上舰船目标的检测是具有丰富角点的人造目标,对ObjectNess二值化标准梯度特征(binarized normed gradients,BING)方法中的目标候选区域提取算法进行改进,使其能够更加快速地进行候选区域的选择并保持较高的检测率。 |
Due to the detection of ship targets on the sea is a man-made object with rich angular point, characteristics of the binary standard ObjectNess gradient (binarized normed gradients, BING) method in the target candidate region extraction algorithm was improved, so it can more quickly to the choice of the candidate region and keep high detection rate. |
49790 |
分析了海上多舰船目标的图像特征,提出了利用角点确定目标的候选基点,再利用ObjectNess BING检测模型训练获得的多目标尺寸进行候选区域的选择,对互联网上下载的多幅多舰船图像进行处理的结果表明,算法能够有效减少候选目标区域的数量并保持较高的检测概率。 |
Analyses the many ships on the sea image characteristics of the target, put forward the angular point is used to determine the target candidates basis points, reuse ObjectNess BING detecting training model for multi-objective size candidate regions, the choice of multiple pictures on the Internet to download the ship image processing results show that the algorithm can effectively reduce the number of candidate target area and maintain a high detection probability. |
49791 |
提出一种基于磁悬浮控制力矩陀螺(magnetically suspended control moment gyroscope,MSCMG)金字塔构型的航天器姿态测控一体化控制方法,利用姿控回路中的执行机构,既进行航天器姿态测量,又进行航天器姿态控制,改变了传统姿控系统由姿态敏感器、控制器、执行机构的组成方式。 |
Put forward a kind of based on magnetic levitation control moment gyro (magnetically suspended control moment gyroscope, MSCMG) pyramid configuration of spacecraft attitude measurement and control integration control method, using the actuators in the attitude control loop, spacecraft attitude measurement, and carries on the spacecraft attitude control, changed the traditional attitude control system by the gesture of sensor, controller, actuator. |
49792 |
首先建立磁悬浮转子径向力矩模型,通过实时检测磁悬浮控制力矩陀螺中的磁轴承电流、磁悬浮转子位移、框架角速度,联立金字塔构型中的3个径向力矩模型求解出航天器的姿态角速度,再设计相应的姿态控制律和框架操纵律,实现航天器的姿态调节,仿真结果证明了该方法的正确性和有效性。 |
First establishing the model of magnetic suspension rotor radial torque through the real-time detection of maglev control moment gyro magnetic bearing current, the magnetic suspension rotor displacement, frame angular velocity, simultaneous pyramid configuration of three radial torque model to solve the spacecraft attitude angular velocity, and then design the corresponding attitude control law framework and control law, to adjust the position of the spacecraft, the simulation results prove the correctness and effectiveness of the proposed method. |
49793 |
针对传统合成孔径雷达(synthetic aperture radar,SAR)回波仿真算法忽略目标散射特性在观测时间内随方位角度和信号频率变化这一问题,提出一种基于时域有限差分方法(finite-difference time-domain method,FDTD)电磁散射计算的SAR原始回波数据生成方法,在此基础上提出了基于服务器的并行仿真策略及流程。 |
For traditional synthetic aperture radar (synthetic aperture radar, SAR) echo simulation algorithm to ignore the target scattering characteristics in observation period with the azimuth Angle and the signal frequency changes the problem, put forward a method based on finite difference time domain (finite - difference time - domain method, FDTD) electromagnetic scattering calculation method to generate SAR raw echo data, on the basis of the proposed parallel simulation strategy and process based on the server. |
49794 |
该方法利用FDTD算法及后续仿真处理精确模拟了SAR系统线性调频脉冲信号从卫星传感器发射后,与场景目标发生相互作用,再被SAR系统传感器接收并生成原始回波数据的全部物理过程,从而得到高保真的SAR原始回波数据。 |
The method using the FDTD algorithm and the subsequent processing accurately simulating the SAR system linear frequency modulation pulse signal from the satellite sensor after launch, interact and scene, again by the SAR system sensor receives and generates the raw echo data of all physical process, resulting in SAR raw echo data of high fidelity. |
49795 |
最后,通过典型目标时间谱与空间谱的仿真对比实验及最终成像结果证明了本文所提算法的正确性及有效性。 |
Finally, a typical target time spectrum and space spectrum simulation experiments and eventually imaging results prove the correctness and effectiveness of the proposed algorithm in this paper. |
49796 |
针对域间路由系统的级联失效展开研究,分析了系统级联失效的机制,建立了域间路由系统级联失效模型。 |
For inter-domain routing system of cascading failure study, analyses the mechanism of cascading failure of inter-domain routing system cascading failure model is established. |