海军航空工程学院学报
海軍航空工程學院學報
해군항공공정학원학보
JOURNAL OF NAVAL AERONAUTICAL ENGINEERING INSTITUTE
2013年
3期
231-236
,共6页
周强%杨俭%曲长文%骆卉子
週彊%楊儉%麯長文%駱卉子
주강%양검%곡장문%락훼자
潜航体%波流相互作用%多尺度散射模型%传递变换函数%尾迹仿真
潛航體%波流相互作用%多呎度散射模型%傳遞變換函數%尾跡倣真
잠항체%파류상호작용%다척도산사모형%전체변환함수%미적방진
submerged body%wave-current interaction%multi-scale scattering model%modulation transfer function%wake simulation
基于水动力学理论和波流弱相互作用理论,运用波作用量谱平衡方程研究了潜航体的尾流场与表面波作用后的表面尾迹,探讨了采用传递变换函数实现表面尾迹SAR成像的可行性。研究表明,波作用量谱平衡方程能够较准确地计算出潜航体尾流场与表面波之间的非线性相互作用;传递变换函数能够快速有效实现海面后向散射系数到SAR图像的转换,且保证了较高的精度。
基于水動力學理論和波流弱相互作用理論,運用波作用量譜平衡方程研究瞭潛航體的尾流場與錶麵波作用後的錶麵尾跡,探討瞭採用傳遞變換函數實現錶麵尾跡SAR成像的可行性。研究錶明,波作用量譜平衡方程能夠較準確地計算齣潛航體尾流場與錶麵波之間的非線性相互作用;傳遞變換函數能夠快速有效實現海麵後嚮散射繫數到SAR圖像的轉換,且保證瞭較高的精度。
기우수동역학이론화파류약상호작용이론,운용파작용량보평형방정연구료잠항체적미류장여표면파작용후적표면미적,탐토료채용전체변환함수실현표면미적SAR성상적가행성。연구표명,파작용량보평형방정능구교준학지계산출잠항체미류장여표면파지간적비선성상호작용;전체변환함수능구쾌속유효실현해면후향산사계수도SAR도상적전환,차보증료교고적정도。
Based on theories of hydrodynamic and weak wave-current interaction, wave action balance equation was used study for emerging surface wake of submerged body. Then the feasibility of realizing SAR imaging of wake by applying to the modulation transfer function(MTF) was discussed. Results showed that non-linear inter?action computed by wave action balance equation was realistic and correct. Moreover,it could realize transforma?tion from NRCS of surface wake to its SAR image by MTF quickly, effectively and accurately.