适用宇航智能交互场景的混合现实技术研究

针对传统网格点方法在分析星座对目标区域的覆盖性能时，存在着计算效率不高的问题，利用抽样理论中借助样本统计量对总体参数进行估计的思想，对传统网格点方法加以了改进。通过分析星座对目标区域内所有网格点的覆盖情况与网格点经纬度之间的关系，确立了对所有网格点构成的总体采用先分层后随机的抽样方式，并分析了层的划分和样本量在各层的分配。根据不同指标的统计特征，给出了不同星座覆盖性能指标的估计方法和不同精度条件下总样本量的计算过程，并建立了改进网格点法的实施流程。最后利用改进方法计算了仿真时段内北斗卫星导航系统对某一地面区域的平均PDOP值，通过与传统网格点方法的仿真结果进行比较并对仿真数据进行分析，证明了该改进方法在保证计算精度的同时，有效的提升了计算效率。

A Study of Mixed Reality Applied to Aerospace Intelligent Interaction[JZ)][HS)]

As Chinese space station is being established,the astronaut will face a challenge of a long-term on-orbit task, such as the equipment replacement, the space test and the space walk. But for the communication delay,the mission control center can hardly offer all-weather technical supports for astronauts,so the astronauts must poccess the capability of getting information supports independently.The technology of mixed reality can solve this problem. At first, the concept of the mixed reality is introduced, the space application characteristics of this technique is also analyzed. The voice command, the gesture control and the gaze are accomplished under the development platform of the VS2015,the app is operated on HoloLens. Our study focuses on the spatial mapping, the paper take an analysis of the spatial mapping data by scanning the indoor environment. The application can project holograms on the surface of the real world.Users can also take some physics interactions with the holograms.The study demonstrates the feasibility of the mixed reality for the on-orbit support of the astronauts.