无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2012年
12期
36-38,50
,共4页
防撞%电力线检测%霍夫变换%图像累积
防撞%電力線檢測%霍伕變換%圖像纍積
방당%전력선검측%곽부변환%도상루적
collision avoidance%power line detection%Hough transform%image accumulation
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。
使用防撞繫統探測電力線,對低能見度條件下直升機的低空飛行安全至關重要。通過理論分析,介紹瞭電力線的佈拉格散射特徵。在靜態條件下,利用毫米波收髮繫統對電力線的散射特性進行瞭試驗驗證。在運動條件下進行運動補償,將電力線的佈拉格散射迴波和輸電鐵塔的彊迴波峰進行圖像纍積,併利用霍伕變換進行電力線提取。試驗結果可清晰地檢測到電力線,證明瞭處理模型和方法的正確性。
사용방당계통탐측전력선,대저능견도조건하직승궤적저공비행안전지관중요。통과이론분석,개소료전력선적포랍격산사특정。재정태조건하,이용호미파수발계통대전력선적산사특성진행료시험험증。재운동조건하진행운동보상,장전력선적포랍격산사회파화수전철탑적강회파봉진행도상루적,병이용곽부변환진행전력선제취。시험결과가청석지검측도전력선,증명료처리모형화방법적정학성。
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.