基于经纬度的弹目距离和方位角简易算法

为实时导引弹体向目标方向飞行并准确实施打击，提出一种基于经纬度的弹体及目标点之间方位角和距离的求解方法。将弹体和目标的经纬度作为已知参量，根据空间位置关系，建立弹目坐标点的空间模型，依据球面及空间几何关系，得出距离与方位角的解算，并利用Google Earth 软件进行了验证比对。计算结果表明：该制导方式简单有效，具有一定的使用价值。

A Simple Algorithm for Distance and Azimuth ofMissile-to-target Based on Longitude and Latitude

In order to guide the missile in the direction of the target in real time and strike accurately, a method based onlongitude and latitude is proposed to solve the azimuth and distance between the missile and the target point. In this paper,the longitude and latitude of the projectile and the target are taken as known parameters, and the space model of thecoordinate points of the projectile and the target is established according to the spatial position relationship. According tothe spherical and spatial geometric relationship, the solution of the distance and azimuth angle is obtained, and thecomparison is verified by using Google Earth software. The calculation results show that the guidance method is simple andeffective, and has application value.