【摘要】 制导炸弹飞行距离短,发射点和目标点的经、纬、高坐标已知,为了得到高精度导航信息,必须严格控制坐标转换过程中的精度损失.分析了制导炸弹坐标转换模型中各坐标系之间的关系及转换精度,讨论了各种不同类型误差对整体转换精度的影响,将主要误差归结为3类,分别采取相应的措施进行修正,设计了一种直接对目标点位置进行跟踪的新坐标转换方法,并成功应用到半实物仿真中.仿真结果表明,该方法的理论模型及其修正措施能很好地修正误差,为炸弹高精度制导提供条件.更多还原

【Abstract】 By considering guided bomb’s short flying distance,having got locations of target and launch point,the precision lost of the coordinate transformation should be strictly handled to get good messages in navigation.The precision of coordinate transformation,the relations among every coordinate in the bomb were analyzed.The effects of errors on precision of coordinate transformation were discussed.The main errors were distributed into three kinds,and were resolved respectively.A new coordinate transformation method through tracking the target point was introduced,which was used in the hardware-in-the-loop simulation successfully.The nesult shows thet the coordinate transformation method can compensate the errors well,which offers precision guidance condition for guided bombs.更多还原