摘要
机载激光雷达是为飞行员提供的前视系统,目的是满足直升机环境适应性。由于激光雷达的发射和接收装置加装于直升机前机身的下方,直升机飞行过程中的转弯、拉起、俯冲等动作会引起激光雷达图像的姿态变化,同时产生图形的变形。因此,显示的图像不利于飞行员短时间内对前方危险障碍物做出反应。通过分析激光雷达成像的特点,考虑形成图像的每个像素的角度信息,严格按照角度和像素的关系对图像做伸缩、旋转等变化,最终可以解决图像失真问题。
Helicopter anti-collision laser radar is an early-warning system for helicopter driving.It can satisfy condition adaptability of the helicopter.The transmitting and receiving equipments of the laser radar are straightly installed below the hellicopter,so the actions such as swerving,drawing back and diving of the helicopter during moving can bring circumvolving and transmogrification to the laser radar's image.It is difficult for flyers to do the reaction immediately from a judgement of the barrier in front of the helicopter according to the changed image.The characteristic of the laser radar imaging is analyzed.Considering the connection of the angle and coordinate of each point,the deformation can be solved after the images are flexed and circumgyrated exactly.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z3期304-308,共5页
Infrared and Laser Engineering
关键词
激光雷达
姿态修正
直升机防撞
Laser radar
Adjusting image
Helicopter anti-collision
