论文部分内容阅读
将制导炸弹的SINS/GPS组合导航系统输出的导航信息进行坐标转换,产生制导控制系统所需要的发射坐标系下的信息,以实现制导炸弹的制导与控制功能。针对某型制导炸弹的工程化研制,研究了制导炸弹在飞行过程中不同坐标系间的转换关系,分析了方位角误差对制导炸弹坐标转换精度的影响,推导了一个新的方位角计算方法。提出了一种递推的坐标转换方法,并与传统的坐标转换方法和基于迭代的坐标转换方法进行了比较。仿真结果表明,该方法可对坐标转换过程中产生的误差进行相应的修正,并且误差不会积累,该方法的转换精度最高。仿真结果验证了该方法的正确性和可行性。
The navigation information output by the guided missile SINS / GPS integrated navigation system is transformed into coordinates to generate the information under the launch coordinate system required by the guidance control system to realize the guidance and control functions of the guided bomb. Aiming at the engineering development of a guided bombs, the conversion relation between guided bombs in different coordinate systems during flight is studied. The influence of azimuth errors on the accuracy of guided bombs coordinate transformation is analyzed. A new method for calculating azimuth angle is derived. A recursive coordinate transformation method is proposed and compared with the traditional coordinate transformation method and the iterative transformation method. The simulation results show that the proposed method can correct the errors generated in the coordinate transformation process without any error accumulation, and the conversion accuracy of the proposed method is the highest. Simulation results verify the correctness and feasibility of the method.