And according to the need of stabilizing the vision angle,a adaptive variable structure guidance law which uses line of sight angle and line of sight angel velocity as the variables is applied to simulate considering the math model of orbit engine and intercepor kinematics.
针对需要保持侧窗视线角稳定的要求,根据以视线角和视线角速度为变量的状态方程,采用了自适应滑模变结构控制的制导律,并根据拦截器轨控发动机和拦截器运动学的数学模型进行了仿真,得到了较好的拦截效果,验证了制导律的正确性。
With the nonlinearity of bi-directional mirror scan, motion of spacecraft and attitude variability, the model of the line of sight and Projection for Landsat 7 are very complex, and it cost much time during systematically geometric correction.
Landsat7采用双向扫描的方式,由于扫描非线性及卫星姿态和轨道的波动,使得建立卫星视线的计算量增大。
The partition of polygon based on line of sights is analyzed,then the concepts of key events of gap and window about viewshed in polygon are delivered.
分析了基于视线扫描的多边形分割情况,进而提出了视域的沟、窗口等概念,分析了沟变化的关键事件,通过对沟的关键事件的形式化描述和处理,在有关的引论下给出了多边形点视域具体的解决方法,此方法的复杂度与多边形的拐点相关。
The sight lineand the road are two key elements of the space-experience of buildingexcept their importance for the using function.
视线与路线的设计除了对建筑功能具有重要意义外 ,还是建筑空间体验中的两个不可或缺的要素。
Design and Implementation of 3D Scene Wandering Algorithm Based on the Line of Sight;
基于视线的3D场景漫游算法的设计与实现