雷达科学与技术
雷達科學與技術
뢰체과학여기술
RADAR SCIENCE AND TECHNOLOGY
2014年
1期
91-96,100
,共7页
李志希%孔令讲%贾勇%赵中兴
李誌希%孔令講%賈勇%趙中興
리지희%공령강%가용%조중흥
穿墙雷达%建筑布局成像%图像补偿%霍夫变换%数据连通域
穿牆雷達%建築佈跼成像%圖像補償%霍伕變換%數據連通域
천장뢰체%건축포국성상%도상보상%곽부변환%수거련통역
through-wall-radar%building layout imaging%image compensation%Hough transform%data connected domain
在穿墙雷达建筑布局成像中,由墙体对电磁波信号的衰减而引起多层墙体成像强度的非均匀现象,这为建筑布局的重构带来极大的不便。对此提出一种基于霍夫变换门限检测的多层墙体衰减补偿方法。首先,对实测数据采用后向投影成像算法,并用基于主成份分析和模糊逻辑图像增强方法处理,形成原始图像。其次,基于霍夫变换直线检测原理完成固定门限值的选取,并依此判决和划分目标墙体区域和非目标杂波区域。再次,根据门限判决后的数据连通域的特性,获得目标墙体连通域的强度补偿率并完成多层墙体衰减补偿。实测数据的处理验证了基于霍夫变换门限检测的多层墙体成像强度衰减补偿方法的有效性。
在穿牆雷達建築佈跼成像中,由牆體對電磁波信號的衰減而引起多層牆體成像彊度的非均勻現象,這為建築佈跼的重構帶來極大的不便。對此提齣一種基于霍伕變換門限檢測的多層牆體衰減補償方法。首先,對實測數據採用後嚮投影成像算法,併用基于主成份分析和模糊邏輯圖像增彊方法處理,形成原始圖像。其次,基于霍伕變換直線檢測原理完成固定門限值的選取,併依此判決和劃分目標牆體區域和非目標雜波區域。再次,根據門限判決後的數據連通域的特性,穫得目標牆體連通域的彊度補償率併完成多層牆體衰減補償。實測數據的處理驗證瞭基于霍伕變換門限檢測的多層牆體成像彊度衰減補償方法的有效性。
재천장뢰체건축포국성상중,유장체대전자파신호적쇠감이인기다층장체성상강도적비균균현상,저위건축포국적중구대래겁대적불편。대차제출일충기우곽부변환문한검측적다층장체쇠감보상방법。수선,대실측수거채용후향투영성상산법,병용기우주성빈분석화모호라집도상증강방법처리,형성원시도상。기차,기우곽부변환직선검측원리완성고정문한치적선취,병의차판결화화분목표장체구역화비목표잡파구역。재차,근거문한판결후적수거련통역적특성,획득목표장체련통역적강도보상솔병완성다층장체쇠감보상。실측수거적처리험증료기우곽부변환문한검측적다층장체성상강도쇠감보상방법적유효성。
For through-wall-radar imaging of building layout,the intensity difference of multi-layer wall images caused by wall propagation attenuation makes it impossible to express the building layout accurately. This paper presents a method to compensate the intensity difference.First,back proj ected algorithm is ap-plied to form an original image,then an image enhancement method based on PCA and fuzzy logic analysis is used to preprocess the image.Second,the target region and the non-target region are separated by a fixed threshold which is achieved by Hough transform.Then,the existed data connected domains are confirmed. Finally,the compensation rates of these domains are obtained and the intensity compensation is performed. The experiment results validate the proposed method.