CAJ | 학술논문

研究了捷联惯组射前标定技术,改进和优化了原有的射前标定方案.射前标定工程应用的关键是初始方位角的确定,这是分离陀螺仪误差系数的基础,精瞄结束后,可以获得弹体坐标系与参考坐标系之间确定的信息.利用精瞄信息,提出了反向导航法以解决射前标定中的初始方位角确定问题,解决了射前标定的工程化应用问题.提出了迭代算法,减小了历次测试结果对射前标定精度的影响,提高了射前标定的精度.精度分析和试验结果分析表明本文所研究的射前标定方案及相关算法能够满足其工程化应用的要求.
연구료첩련관조사전표정기술,개진화우화료원유적사전표정방안.사전표정공정응용적관건시초시방위각적학정,저시분리타라의오차계수적기출,정묘결속후,가이획득탄체좌표계여삼고좌표계지간학정적신식.이용정묘신식,제출료반향도항법이해결사전표정중적초시방위각학정문제,해결료사전표정적공정화응용문제.제출료질대산법,감소료력차측시결과대사전표정정도적영향,제고료사전표정적정도.정도분석화시험결과분석표명본문소연구적사전표정방안급상관산법능구만족기공정화응용적요구.
The pre-launching technology of strapdown inertial measurement unit (SIMU) is studied, improved and optimized. The key problem of pre-launching calibration is the determination of initial azimuth, which is the foundation for calibrating the error coefficients of gyro. When the fine aiming is end, some deterministic information can be obtained, which can exactly describe the relationship between body coordinate system and reference coordinate system. Using the fine aiming information, a backward-navigation-recurrence algorithm is presented to determine the initial azimuth. An iteration method is proposed to improve the calibration accuracy and reduce the effect of the successive test data Accuracy analysis and test results show that the improved pre-launching method and the correlated algorithms can satisfy the engineering application demands.