CAJ | 학술논문

高分辨一维距离像为识别弹道目标的重要方式，但单幅距离像并不能得到目标真实尺寸，也不能得到目标的进动参数。利用弹道目标的一维距离像尺寸序列的信号模型，提出一种估计弹道目标真实尺寸、进动周期和进动角的新方法。该方法先对尺寸序列采用四参数模型进行曲线拟合，估计出包括进动周期在内的信号参数，得到包括目标真实尺寸、进动角和目标姿态角三个未知数在内的二个方程；再利用弹道目标零攻角的再入特性，得到目标姿态角，从而解出目标真实尺寸和进动角。仿真结果表明该方法的有效性。
고분변일유거리상위식별탄도목표적중요방식，단단폭거리상병불능득도목표진실척촌，야불능득도목표적진동삼수。이용탄도목표적일유거리상척촌서렬적신호모형，제출일충고계탄도목표진실척촌、진동주기화진동각적신방법。해방법선대척촌서렬채용사삼수모형진행곡선의합，고계출포괄진동주기재내적신호삼수，득도포괄목표진실척촌、진동각화목표자태각삼개미지수재내적이개방정；재이용탄도목표령공각적재입특성，득도목표자태각，종이해출목표진실척촌화진동각。방진결과표명해방법적유효성。
High resolution range profile(HRRP)is an important means to recognize ballistic targets. However,the real size of target can not be obtained only by use of single HRRP,nor the procession parame-ter.A method is proposed to estimate the parameters of ballistic targets using HRRP size sequences model. Firstly,a curve fit algorithm is adopted to estimate the four parameters of HRRP size model,then the pro-cession period and two equations of three parameters including the real size,the procession angle,and the perspective angle are got.Secondly,the aspect angle is known under the condition of zero attack angle of re-entry property,then the real size and procession angle of target are solved.Simulation results prove the ef-fectiveness of the method.