摘要
针对全自动着舰系统中滤波器原理进行了研究,实现了基于α-β-γ滤波器的雷达引导信号噪声抑制方法,并将其滤波效果与α-β滤波器对比。在研究雷达工作原理基础上,对雷达噪声进行建模,推导出α-β滤波器和α-β-γ滤波器在离散域和连续域的等效传递函数。调整滤波参数,对比了α-β滤波器和α-β-γ滤波器在位置通道、速度通道,以及加速度通道的伯德图,通过噪声时域仿真对比了滤波器效果。全自动着舰非线性闭环模型数字仿真结果表明,合理选择参数,使用α-β-γ滤波器能够改善着舰控制精度。
The principle of filter in automatic landing system is studied,the noise suppression method of radar guidance signal based onα-β-γfilter is realized,and resulted the filtering effect is compared withα-βfilter.The radar noise is modeled,based on the principle of radar operation.Then the equivalent transfer functions ofα-βfilter andα-β-γfilter in discrete and continuous domains are derived.The Bode diagram of the position,velocity and acceleration channels of theα-βfilter and theα-β-γfilter are compared by adjusting the paraments.Then the noise were added to verify the effect of filter on noise suppression.The nonlinear closed-loop model of automatic landing withα-β-γfilter is simulated.The results show that,landing accuracy can be improved byα-β-γfilter through choosing parameters properly.
作者
何霄阳
张冬
甄冲
王翼丰
HE Xiaoyang;ZHANG Dong;ZHEN Chong;WANG Yifeng(Shenyang Aircraft Design&Research Institute,Shenyang 110035,China)
出处
《飞机设计》
2022年第1期4-10,共7页
Aircraft Design
