舰艇目标运动速度的估算,是空对舰攻击瞄准计算的基本命题之一。本文运用现代控制理论中的卡尔曼滤波方法来估算目标的运动速度,给出了滤波计算公式,讨论了各种因素对滤波精度的影响,并在数字机上作了大量的验算。计算结果表明,卡尔曼滤波具有滤波稳定时间短、收敛快、稳态振荡小及滤波精度高等一系列优点。 Estimation of the target speed of the warship is one of the basic propositions of aiming at the attack and attack of an airship. In this paper, the Kalman filter in the modern control theory is used to estimate the moving speed of the target. The formula of the filter is given, the influence of various factors on the filter accuracy is discussed, and a lot of checking on the digital machine is made. The calculation results show that Kalman filter has a series of advantages such as short settling time, fast convergence, small steady-state oscillation and high filtering accuracy.