红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2013年
7期
1945-1949
,共5页
李南京%冯引良%胡楚锋%周杨%张麟兮
李南京%馮引良%鬍楚鋒%週楊%張麟兮
리남경%풍인량%호초봉%주양%장린혜
微波成像%共形天线%波谱变换%雷达散射截面(RCS)
微波成像%共形天線%波譜變換%雷達散射截麵(RCS)
미파성상%공형천선%파보변환%뢰체산사절면(RCS)
microwave imaging%conformal antenna%spatial spectrum transform%radar cross section (RCS)
二维微波成像技术是一种有效诊断雷达目标散射点强度和空间分布的手段。机载共形天线因与机体表面成为一体,常规测试手段难以确定其RCS贡献。基于二维微波成像技术,分离和提取出了装机状态下共形天线的反射率分布,通过二维空间像与二维空间谱之间的波谱变换获得了共形天线的二维空间谱信息,经过直角坐标域至极坐标域的插值获得了对应频率和角度的散射信息,再对定标球进行同样的处理,最终标定出共形天线的RCS贡献。实验结果表明了该技术的有效性。
二維微波成像技術是一種有效診斷雷達目標散射點彊度和空間分佈的手段。機載共形天線因與機體錶麵成為一體,常規測試手段難以確定其RCS貢獻。基于二維微波成像技術,分離和提取齣瞭裝機狀態下共形天線的反射率分佈,通過二維空間像與二維空間譜之間的波譜變換穫得瞭共形天線的二維空間譜信息,經過直角坐標域至極坐標域的插值穫得瞭對應頻率和角度的散射信息,再對定標毬進行同樣的處理,最終標定齣共形天線的RCS貢獻。實驗結果錶明瞭該技術的有效性。
이유미파성상기술시일충유효진단뢰체목표산사점강도화공간분포적수단。궤재공형천선인여궤체표면성위일체,상규측시수단난이학정기RCS공헌。기우이유미파성상기술,분리화제취출료장궤상태하공형천선적반사솔분포,통과이유공간상여이유공간보지간적파보변환획득료공형천선적이유공간보신식,경과직각좌표역지겁좌표역적삽치획득료대응빈솔화각도적산사신식,재대정표구진행동양적처리,최종표정출공형천선적RCS공헌。실험결과표명료해기술적유효성。
2-D microwave imaging is an effect method to diagnose the amplitude and spatial distribution of radar scatters. Conformal antenna as a part of plane-skin, its radar cross section (RCS) can not be measured by general RCS measurement method. A new method was presented to extract the scattering characteristic of conformal antenna from 2-D microwave image of target, by spectrum transforming from 2-D image domain to 2-D spatial spectrum domain, spatial spectrum information of conformal antenna can be extracted, and scattering characteristic of target at certain frequency and angle can be gained by interpolating data form descartes coordinate system to polar coordinate system. The same processing to a reference sphere, by scale calibrating, then the RCS of conformal antenna can be achieved accurately. Experiment results show that the method is effective.