基于刚体弹道模型的防空火控解算方法

为改善火控系统的通用性和实时性，提出了基于刚体弹道模型的防空火控解算方法。对目标量测信息进行无偏转换，并将无偏转换得到的噪声协方差矩阵做解耦，在对目标状态准确估计同时，降低滤波算法计算的复杂度；利用割弦迭代法计算出命中点坐标，并在每次迭代过程中，利用虚拟脱靶量对射击诸元进行修正，减少对弹道微分方程的计算次数，极大提高火控解算的求解速度。仿真实验结果表明，该方法有效和可行，可以更加精确地计算出射击诸元，且计算量相对于传统火控解算方法得到了显著改善。

The Antiaircraft Fire Control Calculation Method Based on Rigid Body Trajectory Model

An antiaircraft fire control calculation method based on rigid body trajectory model is proposed for improving the versatility and real-time performance of fire control system. The target measurements are unbiasedly converted, and the noise covariance matrix is decoupled, which accurately estimates the target state and reduces the computational complexity of the filtering algorithm. The hit point is calculated by using the secant iteration method, and the firing data are corrected by the virtual miss distance in each iteration, which reduces the time of calculating the ballistic differential equation and greatly improves the speed of fire control calculation. The simulated results demonstrate the validness and feasibility of the proposed method. The firing data can be calculated more accurately, and the calculated amount is significantly improved compared with the traditional fire control calculation method.