一种直升机合成视景辅助导航技术

A Synthetic Vision Assistant Navigation Technology for Helicopter

针对当前直升机低空飞行安全性差、情景感知能力弱等问题,给出基于高分数据的合成视景辅助导航技术研究方法。介绍了直升机合成视景生成与辅助导航的相关技术概念和特点,对其工作原理进行了深入分析。研究了异源图像精确配准、障碍目标自动识别以及飞行员视角下的三维场景快速重建、地形辅助导航等技术难点,并设计了技术实现架构、处理流程,在演示系统中展示了本项技术的设计思路与特点。应用结果表明,该技术实现能够为飞行员提供高精度、低时延的三维场景图像,增强了地形和障碍告警能力,能够促进直升机组合导航技术的革新。

With regard to current helicopter’s problems such as low safety in low-altitude flight and weak situational sensing capability,this paper presents a research method of assistant navigation by synthetic vision based on high-resolution data.The relevant technical concept and characteristics of helicopter synthetic vision generation and auxiliary navigation are introduced,and its operating principle is analyzed in depth.The paper also studies the technical difficulties such as accurate registration of heterologous images,automatic recognition of obstacle target,rapid reconstruction of 3D scene from the pilot's perspective,and terrain aided navigation,etc.The technical implementation architecture and processing flow are designed.The design idea and features of the technology are displayed in the demonstration system.The application results show that the technology can provide high-precision and low-delay 3D scene for pilots,which enhances the capability of terrain and obstacle warning,and promotes the innovation of helicopter integrated navigation technology.