直升机防撞系统的电力线检测方法  

Detection Method of Power Lines for Helicopter Collision Avoidance System

作　　者：卫青春[1] 杨晓亮[1] 赵华敏[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2012年第12期36-38,50,共4页Radio Engineering

摘　　要：使用防撞系统探测电力线,对低能见度条件下直升机的低空飞行安全至关重要。通过理论分析,介绍了电力线的布拉格散射特征。在静态条件下,利用毫米波收发系统对电力线的散射特性进行了试验验证。在运动条件下进行运动补偿,将电力线的布拉格散射回波和输电铁塔的强回波峰进行图像累积,并利用霍夫变换进行电力线提取。试验结果可清晰地检测到电力线,证明了处理模型和方法的正确性。It is of great importance to detect power lines in low-visibility environments for the safety of low-altitude flying helicop- ters. In this paper,the Bragg scattering characteristics of power lines at millimeter-waves are analyzed theoretically. Meanwhile,a milli- meter-wave transeeiver is used to get the actual scattering characteristics of power lines in static condition. And in movement condition, the Hough transform is used to detect power lines after movement compensation and image accumulation of the power lines Bragg scat- tering echo and transmission tower strong echo peak. The experiment result,in which the power lines can be detected clearly ,proves the correctness of the processing model and the method.

关 键 词：防撞 电力线检测 霍夫变换 图像累积 

分 类 号：TN957.52[电子电信—信号与信息处理]