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为了更好地利用直升机地形感知与告警系统,减少可控飞行撞地事故的发生,提出了一种适用于直升机地形感知与告警系统的前视地形告警算法。首先介绍了直升机前视地形告警的基本原理,并给出了前视告警包线的设计流程;然后提出了前视告警包线下视边界、前视边界、上视边界和横侧边界的确定方法;最后构建仿真算例进行了仿真验证。仿真结果表明,提出的算法可以在直升机飞行撞地前提前预警。
In order to make better use of helicopter terrain awareness and warning system and reduce the incidence of controlled flight collision, a forward-looking terrain warning algorithm for helicopter terrain sensing and warning system is proposed. First of all, the basic principle of helicopter frontal topographic warning is introduced and the design flow of foreground alarming envelope is given. Then, the determination of the front visual boundary, front visual boundary, top visual boundary and lateral lateral boundary is proposed Finally, a simulation example is given to verify the method. The simulation results show that the proposed algorithm can warn the helicopter before it hit the ground.