空军工程大学学报(自然科学版)
空軍工程大學學報(自然科學版)
공군공정대학학보(자연과학판)
JOURNAL OF AIR FORCE ENGINEERING UNIVERSITY (NATURAL SCIENCE EDITION)
2015年
4期
42-45
,共4页
几何绕射理论%物理光学法%雷达截面积%弹道目标%回波模拟
幾何繞射理論%物理光學法%雷達截麵積%彈道目標%迴波模擬
궤하요사이론%물리광학법%뢰체절면적%탄도목표%회파모의
GTD%PO%RCS%ballistic target%echo simulation
对弹道目标进行满足精度要求的雷达回波实时模拟是一项综合性较强的工程,是目标探测、识别的关键。基于几何绕射理论(GTD)和物理光学法(PO),推导给出了某大型弹道目标在微波频率下任意视线角的RCS解析公式。文中方法和FEKO 软件的计算结果符合良好且计算速度极快,利用文中方法得到的结果进行的一维距离像仿真与理论结果吻合较好,可以满足基于目标电磁散射特征的再入大气层弹道目标雷达回波信号实时模拟的精度需要。
對彈道目標進行滿足精度要求的雷達迴波實時模擬是一項綜閤性較彊的工程,是目標探測、識彆的關鍵。基于幾何繞射理論(GTD)和物理光學法(PO),推導給齣瞭某大型彈道目標在微波頻率下任意視線角的RCS解析公式。文中方法和FEKO 軟件的計算結果符閤良好且計算速度極快,利用文中方法得到的結果進行的一維距離像倣真與理論結果吻閤較好,可以滿足基于目標電磁散射特徵的再入大氣層彈道目標雷達迴波信號實時模擬的精度需要。
대탄도목표진행만족정도요구적뢰체회파실시모의시일항종합성교강적공정,시목표탐측、식별적관건。기우궤하요사이론(GTD)화물리광학법(PO),추도급출료모대형탄도목표재미파빈솔하임의시선각적RCS해석공식。문중방법화FEKO 연건적계산결과부합량호차계산속도겁쾌,이용문중방법득도적결과진행적일유거리상방진여이론결과문합교호,가이만족기우목표전자산사특정적재입대기층탄도목표뢰체회파신호실시모의적정도수요。
To meet the real??time simulation of ballistic target radar echo precision requirement is a stronger comprehensive proj ect,it is a key to the target detection and recognition.In this paper,a calculation for-mula of a large ballistic target in explicit RCS arbitrary angle of sight is given under microwave frequency based on GTD and PO method.The results computed by using this method agree with that by using the FEKO software and the calculation speed is extremely high.Using the data obtained by this method to re-alize the High Resolution Range Profiles (HRRPs),the results of simulation and theory are in good agree-ment with each other,and can meet the need of real time simulation precision of radar based on reentry ballistic target echo signal of target electromagnetic scattering characteristics.