用相似变换求相伴矩阵的一个方法

达尼列夫斯基(Danileusky)法是求方阵特征多项式的一个有效方法。这种方法实质上是对n阶方阵A作(n—1)次相似变换,其结果是把方阵A变成相伴矩阵P,从而得到A的特征多项式。本文仅对达氏方法作些改进,使结构更加简洁,同时也论证了这种方法的可行性。     

基于模拟退火算法的电子侦察卫星任务规划问题研究

在分析电子侦察卫星的工作原理及其所担负的使命任务的基础上,首先给出了电子侦察卫星任务规划的基本过程;然后在明确电子侦察卫星任务规划问题的基本输入输出和一些基本假定的基础上,建立电子侦察卫星静态任务规划的混合整数规划模型;最后提出了一种解决电子侦察卫星任务规划问题的模拟退火算法（simulated annealing,SA）。实验结果表明：该算法有效地解决了针对固定目标的电子侦察卫星任务规划问题。     

低轨预警卫星对抗研究

低轨预警卫星能够对弹道导弹中段进行监视与跟踪,对敌方的低轨预警卫星实施对抗。针对低轨预警卫星飞行轨道低、传感器灵敏度高、信息传输实时性要求高、平台脆弱难修复和星座组网等薄弱环节,分析了实施对抗的可能性。从硬摧毁和软杀伤的角度,可以采用反卫星导弹、红外诱饵弹、地基激光武器、反卫星卫星和空天飞机武器5种对抗方式;利用层次分析法对这5种对抗方式进行比较,比较结果表明,反卫星卫星和空天飞机武器是未来实施卫星对抗的最佳方式。     

赛马矩阵问题及其解法

本文命名了赛马矩阵问题 ,并利用笔者提出的公式化方法和伴随序列法解决了此问题 .     

Avoiding the uncanny valley: robot appearance,personality and consistency of behavior in an attention-seeking home scenario for a robot companion

This article presents the results of video-based Human Robot Interaction (HRI) trials which investigated people’s perceptions of different robot appearances and associated attention-seeking features and behaviors displayed by robots with different appearance and behaviors. The HRI trials studied the participants’ preferences for various features of robot appearance and behavior, as well as their personality attributions towards the robots compared to their own personalities. Overall, participants tended to prefer robots with more human-like appearance and attributes. However, systematic individual differences in the dynamic appearance ratings are not consistent with a universal effect. Introverts and participants with lower emotional stability tended to prefer the mechanical looking appearance to a greater degree than other participants. It is also shown that it is possible to rate individual elements of a particular robot’s behavior and then assess the contribution, or otherwise, of that element to the overall perception of the robot by people. Relating participants’ dynamic appearance ratings of individual robots to independent static appearance ratings provided evidence that could be taken to support a portion of the left hand side of Mori’s theoretically proposed ‘uncanny valley’ diagram. Suggestions for future work are outlined.

地球卫星自主天文导航滤波方法性能分析

在系统硬件精度无法改进的条件下,滤波方法是影响地球卫星自主天文导航精度和实时性的最重要因素,本文针对地球卫星天文导航工程应用的需求,研究了目前导航系统中应用最为广泛的扩展卡尔曼滤波(EKF)、Unscented卡尔曼滤波(UKF)、Unscented粒子滤波(UPF)3种滤波方法,在滤波周期和噪声分布影响下的导航精度和实时性.半物理仿真结果表明,在相同仿真条件下,Unscented粒子滤波方法具有最高的导航精度,但计算量也最大,EKF方法计算量最小,导航精度最低.本文结果可为地球卫星自主导航系统中滤波方法的选择提供参考和依据.     

多通道SAR误差估计与补偿方法及其实测数据验证

多通道SAR系统能够突破最小天线面积条件的约束,同时获得宽测绘带、高分辨率的SAR图像。相对于单通道SAR系统,多通道系统中存在更多的误差源,这将大大降低SAR图像的质量。利用一组三通道SAR实测数据作为实验对象,根据各种误差源对SAR成像处理的影响,对系统中可能存在的各种误差源进行了分类并给出相应补偿方法。实测数据的处理结果验证了以上方法的有效性。     

LVDS技术在高速遥感数据接收系统中的应用

分析了高速遥感数据接收系统子系统之间的互连需求与发展趋势,指出了传统的ECL互连方案的不足,提出了基于低压差分信号(LVDS)技术的互连方案,并搭建实验系统验证了方案的可行性。新方案显著地降低了子系统间互连的复杂度。     

利用三星时频差的运动辐射源定位与测速方法

针对高轨三星无源定位系统对空中恒定高度运动目标探测的应用场景,提出了一种利用信号到达时差( TDOA)、到达频率差( FDOA)的无源定位与测速方法。详细描述了算法原理、算法处理步骤,利用STK( Satellite Tool Kit)软件结合计算机仿真,分析了时差测量误差、频差测量误差、高程估计误差对定位精度与测速精度的影响。该方法定位精度与测速精度较高,具有一定的工程应用价值。     

User‐Centric Conflict Management for Media Services Using Personal Companions

In this paper, we propose a user‐centric conflict management method for media services which exploits personal companions for the harmonious detection and resolution of service conflicts. To detect conflicts based on the varying characteristics of individual users, the proposed method exploits the unified context describing all users attempting to access media services. It recommends and mediates users' preferred media contents through a shared screen and personal companions to resolve the detected conflicts. During the recommendation, a list of preferred media contents is displayed on the shared screen, and a personally preferred content list is shown on the user's personal companion comprising the selection of media contents. Mediation assists the selection of a consensual service by gathering the users' selections and highlighting the common media contents. In experiments carried out in a ubiHome, we observed that recommendations and mediation are useful in harmoniously resolving conflicts by encouraging user participation in conflict situations.