计算机与数字工程
計算機與數字工程
계산궤여수자공정
COMPUTER & DIGITAL ENGINEERING
2014年
10期
1883-1887,1984
,共6页
杂波对消%快速运动目标检测%Radon变换%keystone 变换
雜波對消%快速運動目標檢測%Radon變換%keystone 變換
잡파대소%쾌속운동목표검측%Radon변환%keystone 변환
clutter cancellation%fast moving target detection%Radon transform%keystone transformation
论文深入研究了基于通道对消处理的 SAR 快速运动目标检测、定位和速度估计技术。基于双通道杂波对消对快速运动目标信号的的影响，提出将通道对消后的残差 SAR 图像反变换回距离压缩方位时域，通过 Radon 变换计算距离走动的斜率，得到径向速度估计，再利用 keystone 变换完成运动目标的距离走动校正。基于图像熵最小化准则，采用参数搜索法实现方位向聚焦，同时获得切向速度估计值，在实现二维聚焦的基础上完成快速运动目标检测，最后对所提出的快速运动目标检测方法进行了仿真验证。
論文深入研究瞭基于通道對消處理的 SAR 快速運動目標檢測、定位和速度估計技術。基于雙通道雜波對消對快速運動目標信號的的影響，提齣將通道對消後的殘差 SAR 圖像反變換迴距離壓縮方位時域，通過 Radon 變換計算距離走動的斜率，得到徑嚮速度估計，再利用 keystone 變換完成運動目標的距離走動校正。基于圖像熵最小化準則，採用參數搜索法實現方位嚮聚焦，同時穫得切嚮速度估計值，在實現二維聚焦的基礎上完成快速運動目標檢測，最後對所提齣的快速運動目標檢測方法進行瞭倣真驗證。
논문심입연구료기우통도대소처리적 SAR 쾌속운동목표검측、정위화속도고계기술。기우쌍통도잡파대소대쾌속운동목표신호적적영향，제출장통도대소후적잔차 SAR 도상반변환회거리압축방위시역，통과 Radon 변환계산거리주동적사솔，득도경향속도고계，재이용 keystone 변환완성운동목표적거리주동교정。기우도상적최소화준칙，채용삼수수색법실현방위향취초，동시획득절향속도고계치，재실현이유취초적기출상완성쾌속운동목표검측，최후대소제출적쾌속운동목표검측방법진행료방진험증。
SAR fast moving target detection ,location and speed estimation technology based on channel cancellation processing is studied in detail .Based on the effects of dual channel clutter cancellation on the fast moving target signal ,the channel after the cancellation of residual SAR image compression bearing time domain inverse transform back into the dis -tance is put forward .Randon transform is used to calculate walking distance of the slope ,to get radial velocity estimation . The keystone transformation is used to finish correcting of moving targets distance .Based on image entropy minimization rule ,direction to focus is achieved by parameter research method ,at the same time ,the tangential velocity estimation is ob-tained .Fast moving target detection is achieved based on two-dimensional focusing .At last ,the simulation of the proposed method is conducted .
