摘要
低空掠海拖靶主要用于模拟反舰导弹。在低空掠海飞行中,含有海浪杂波的无线电高度表的测量高度数据不能直接用于高度控制。在对海浪杂波进行估计的基础上,根据卡尔曼滤波器的原理,综合采用无线电高度表和加速度计的测量信号,设计了海浪滤波器。该滤波器能够有效滤除海浪杂波的干扰,获得高质量的高度信号和垂向速度信号。通过对加速度计零点漂移的估计,能够改善垂向速度和高度的精度,并且得到没有零点偏差的加速度测量。数字仿真结果表明,这种海浪滤波器能够满足系统要求。
A low level sea-skimming tow target is mainly used to simulate an anti-vessel missile. In the low level sea-skimming flight, the height data acquired by the radar altimeter can not be used directly in the height control because of the sea wave noise. Based on the estimation of the sea wave noise, a sea wave filter is designed with the combination of the signal of the radar altimeter and that of the accelerometer on the principle of Kalman filter. It can filtrate the sea wave noise effectively and achieve height and vertical velocities with high precision. With the estimation of the zero drift of accelerometer, the precision of the vertical velocity and height can be improved and the measurement of the acceleration can be got without zero drift. The results of numerical simulation show that the sea wave filter can meet the system requirements.
出处
《传感器世界》
2009年第10期22-25,共4页
Sensor World
关键词
拖靶
低空掠海
垂向速度
卡尔曼滤波
tow target
low level sea-skimming
vertical velocity
Kalman filter
