为提高舰炮射击诸元解算效率,基于万有引力搜索算法(GSA)提出了一种新型诸元解算方法。首先,建立了弹丸六自由度外弹道模型,采用弦截法对解命中问题进行求解。其次,将诸元解算转化为二维优化问题,利用弹道刚性原理预估初始射角,并在其附近初始化种群,以质量最大粒子作为最优解,即所求射角。仿真结果表明,与现行基于二分法的解算方法相比,该算法在保证弹道解算精度的同时,有效缩短了弹道解算时间,具有更好的实时性。

In order to improve the efficiency of firing data for shipboard gun, a new firing data algorithm is presented based on gravitational search algorithm(GSA). Firstly, the mathematical model of six-degree-of-freedom for projectile motion is established. And the secant method is used to solve hit problem. Then, the firing data calculation is translated into the two-dimensional optimization problem, and particle population is generated around the initial angle which is estimated by the principle of rigid ballistic. The maximum mass particle is certainly the optimal solution which is the firing angle also. The simulation results show that compared with the algorithm based on dichotomy, this algorithm can effectively shorten the calculation time while ensuring the calculation precision, namely it has better real-time performance.