CAJ | 학술논문

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.
장제도작탄적SINS/GPS조합도항계통수출적도항신식진행좌표전환,산생제도공제계통소수요적발사좌표계하적신식,이실현제도작탄적제도여공제공능.침대모형제도작탄적공정화연제,연구료제도작탄재비행과정중불동좌표계간적전환관계,분석료방위각오차대제도작탄좌표전환정도적영향,추도료일개신적방위각계산방법.제출료일충체추적좌표전환방법,병여전통적좌표전환방법화기우질대적좌표전환방법진행료비교.방진결과표명,해방법가대좌표전환과정중산생적오차진행상응적수정,병차오차불회적루,해방법적전환정도최고.방진결과험증료해방법적정학성화가행성.
In order to realize the control and guidance function of the guided bomb, the output navigation information of guided bomb's SINS/GPS integrated navigation system should be transformed into the launch coordinate, which is needed in the navigation and guidance stage. Based on the engineering background of the precision guided bomb, the transform relations between different coordinate were investigated, and the effects of azimuth error was analyzed. A new azimuth computing method was derived. A new method of coordinate transform based on recursion was proposed, and was compared with the traditional and iterated method of coordinate transform. The simulation results show that this method can modify the error in the process of coordinate transform, and the error is not accumulative. This method has the highest transform precision. The simulation results have shown the correctness and feasibility of this method in engineering application.